Field Notes of Junius Henderson/Notebook 2

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Field Notes of Junius Henderson by Junius Henderson
Notebook 2: 1907—1908
Professor Peter Robinson of the University of Colorado at Boulder transcribed these notes in 2001, and agreed to their free release. Annotations by him are enclosed in double brackets "((like this))". commons:File:Field Notes of Junius Henderson, Notebook 2.pdf was scanned by the w:en:National Snow and Ice Data Center. The index page is at Index:Field Notes of Junius Henderson, Notebook 2.pdf.

Since this document is a response to a challenge on the annotation of field notes, please annotate this document freely.

Front pages[edit]

Junius Henderson
Field Notebook
No. 2
1907 - 1908 Junius Henderson
Boulder, (illegible text)

Field Note Book
No. 2

1907-1908

Fort Collins Trip[edit]

Fort Collins trip, May 24-25, 1907

Ft. Collins Trip

May 24, 1907Wikipedia-logo-v2.svg May 24, 1907

Left BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado on 9:25 train. Hazy morning, clouding up at train time with an east wind. Train left Boulder 10 min late, rode to LongmontCommons-logo.svgOpenstreetmap logo.svg Longmont, Colorado on seat with Capt McGwire, arrived at Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado at 11:32- 7 min late. Went to Northern Hotel, washed up and at 12:15 went in to dinner. In afternoon went to agricultural college, visited Prof. Lory in Physics laboratory, who showed me about the buildings. Also had a visit with Mr. Bragg in the museum, arranged with a student to accompany me tomorrow. Then went to the Mountain avenue Livery Co.’s stable at 127 E Mountain Ave.Commons-logo.svgOpenstreetmap logo.svg 127 E Mountain Ave., Ft. Collins, Colorado and arranged for a team for tomorrow, reaching hotel again at 5:15. ((This day’s notes in pencil and somewhat smudged)).

Ft. Collins, Colo., May 25/07

Rained last night. Cool and somewhat cloudy this morning. Had breakfast at 6:30 a.m. Started at 7;10 with O. G. Babcock. A cold rain and fierce wind was blowing chilling us to the bone despites “slickers” and heavy lap robe. We drove through La Porte, thence to the Forks, where we took the right hand road, leaving Livermore to the left, and went about four miles further. It is quite evident that the foothill geology will be much more difficult to work out than further south, as there is much folding, which gives to the formations outcropping very irregular outlines and the folds and general flatness of the dip spreads the formations out over a wide and decidedly variable zone, extending them into the foothills long distances in several places. We fed the team at noon at a point about 9 or 10 miles south of the Wyoming line, then turned back at 2 p.m. Drove by way of BellevueCommons-logo.svgOpenstreetmap logo.svg Bellvue, Colorado where we found a beautiful anticlinal fold which can be nicely photographed in the Lyons formation. Reached the hotel about 5:30, chilled through and very tired. Retired at 8:15. ((pencil))

Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado, May 25 (sic) 1907Wikipedia-logo-v2.svg May 26, 1907

Cloudy morning, but calm. Arose at 7:15 intending to remain until 2 p.m., but concluded to take the 8 oclock train, so left without breakfast. A little fresh snow on top of the highest foothills, probably about the altitude of Green Mt.Commons-logo.svgOpenstreetmap logo.svg Green Mountain, Colorado At BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado. ((pencil))

Trip to Northern Colorado[edit]

Northern Colorado Trip June 6-15, 1907

Trip to Northern Colorado

Thursday June 6, 1907Wikipedia-logo-v2.svg June 6, 1907

Almost perfectly clear morning at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado. About 50 piñon jaysWikispecies-logo.svgCommons-logo.svg Gymnorhinus cyanocephalus flew over the house at 7 a.m. going nearly north. Clouded up before 9 a.m. Left Boulder at 9:45 for Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado by C & S Ry arriving there at 11:40. Got outfit from freight depot and then went to Tiedman Hotel for dinner. Got loaded by 2 p.m. and started at 2:20 in a driving rain, Dodds and I in the saddle, Ramaley, Robbins and the driver (Casey) in the wagon, the outfit from Tate and Sedgley’s stable. Dodds and I went due west and photographed the fine fold at Belleview, catching the wagon at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado at 6:30, where we went into camp. Saw the following birds: magpiesWikispecies-logo.svgCommons-logo.svg Corvidae, redwing blackbirdWikispecies-logo.svgCommons-logo.svg Agelaius phoeniceus, lark buntingsWikispecies-logo.svgCommons-logo.svg Calamospiza melanocorys, Arkansas kingbirdWikispecies-logo.svgCommons-logo.svg Tyrannus , T.T. kingbirdWikispecies-logo.svgCommons-logo.svg Tyrannus, mourning dovesWikispecies-logo.svgCommons-logo.svg Zenaida macroura, 1 killdeerWikispecies-logo.svgCommons-logo.svg Charadrius vociferus, 1 kingfisherWikispecies-logo.svgCommons-logo.svg Alcedines, robinsWikispecies-logo.svgCommons-logo.svg Turdus migratorius, barn swallowsWikispecies-logo.svgCommons-logo.svg Hirundo rustica, cliff swallowsWikispecies-logo.svgCommons-logo.svg Petrochelidon pyrrhonota meadowlarkWikispecies-logo.svgCommons-logo.svg Sturnella, burrowing owlWikispecies-logo.svgCommons-logo.svg Athene cunicularia, goldfinchWikispecies-logo.svgCommons-logo.svg Carduelis tristis, Brewer’s blackbirdsWikispecies-logo.svgCommons-logo.svg Euphagus cyanocephalus. Several birds singing about camp whose songs I do not recognize. Retired at 9 p.m.

Friday June 7, 1907Wikipedia-logo-v2.svg June 7, 1907

Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado ((drawing in notebook, showing w to E cross-section of ridges, with dips, ridges numbered 1 to 5; no. 4 = Lykins; no. 5 = Dakota)) Ridge 2 strongly crossbedded at top, took picture, found aragonite crystals. At base of 3 is a strong gypsum bed which has been quarried. Arose at 4:30 a.m. Found cliff swallowsWikispecies-logo.svgCommons-logo.svg Petrochelidon pyrrhonota busy building nests where Owl CreekCommons-logo.svgOpenstreetmap logo.svg Owl Creek, Colorado cuts through ridge No. 1. Nests a little further all finished. We collected mollusca and plants where stream cuts through ridge No. 2 and started on at 9 a.m. At ranch on section line NW of Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado found Fountain conglomerate dipping about 15˚ nearly E. strike about N strongly crossbedded thus ((drawing in field book)) reddish and gray, coarse sand and pebbles up to one inch, just S of ranch house. The exposures to the west between the first and the sharp rise of the micaceous granite hills were arkose; with 2 or 3 inch pebbles toward the base and no crossbedding so far as I discovered in the few moments stop. Has scarcely a tendency toward isolation from the granite into a high ridge as at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado. E of Forks HotelCommons-logo.svgOpenstreetmap logo.svg Livermore, Colorado strike changes to N 120˚ W and dip is about N 45˚ W, dipping about 18˚. The strata swing well west or SW then back a mile or so north, so that the cross section (generalized) E or road from Forks HotelCommons-logo.svgOpenstreetmap logo.svg Livermore, Colorado is about thus, looking west. (( drawing in field book)). At N end of section granite swings across road well to the east. Camped on Ten Mile CreekCommons-logo.svgOpenstreetmap logo.svg Tenmile Creek, Colorado at 12:20 for lunch. Resumed our journey at 1:30 p.m., Ramaley and Dodds in the saddle. After we left the Laramie roadCommons-logo.svgOpenstreetmap logo.svg US Rt. 287 we crossed Fountain formation, but soon got to granite, which continued across South Box ElderCommons-logo.svgOpenstreetmap logo.svg South Boxelder Creek, Colorado to North Box ElderCommons-logo.svgOpenstreetmap logo.svg North Boxelder Creek, Colorado. We camped below Box Elder P.O. a mile or two. The granite weathers into “toadstools” at Box Elder, owing to horizontal resistant zones.

North Box Elder, Saturday June 8, 1907Wikipedia-logo-v2.svg June 8, 1907

Rained for a little while after breakfast, and was gloomy. I was the last one up, rising when breakfast was nearly ready. At 7 a.m. there were indications of clearing up, so Dodds and I started horseback, crossing over the “Dakota” ridge . Found the “red beds” generally dipping strongly to the eastward and in places folded more or less. The Lykins ? was also folded and considerably crushed in places. In the Jurassic Dodds found some baryta. The “Dakota” exposures consisted entirely of a coarse conglomerate of sand, gravel and igneous boulders up to a foot in diameter with a calcareous cement as shown by its effervescence in acid, at least in the upper part. It was in all perhaps 100 feet in thickness. The upper part reminded me of the “mesa caps” in places north of BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado where cemented by a calcareous matrix. Passed northward into WyomingCommons-logo.svgOpenstreetmap logo.svg Wyoming, thence westward passing around the head of Sand CreekCommons-logo.svgOpenstreetmap logo.svg Sand Creek, Colorado and tributaries except one which we crossed, thence southward to Box Elder P.O.Commons-logo.svgOpenstreetmap logo.svg Box Elder P.O. over the Cheyenne roadCommons-logo.svgOpenstreetmap logo.svg US Rt. 87 and on to camp. Found nothing suggesting the limestone containing Carboniferous fossils mentioned by Darton et al. unless at northwest corner of the quadrangular course of the day’s travel. Saw about 75 piñon jaysWikispecies-logo.svgCommons-logo.svg Gymnorhinus cyanocephalus flying nearly north. Had a very hard day. It hailed about 10 a.m., immense hailstones falling, with very little rain, so that we kept moderately dry, lying under a low cedarWikispecies-logo.svgCommons-logo.svg cedar which broke the fall of the hailstones. At 2 p.m. it began to hail and rain furiously and kept it up until we reached camp at 3:15, soaked through and chilled, the ground white with hail. The sun then came out, but it clouded again at 4:30. Among the most common birds at this camp is the Brewer blackbirdWikispecies-logo.svgCommons-logo.svg Euphagus cyanocephalus. List is as follows: Cliff swallowWikispecies-logo.svgCommons-logo.svg Petrochelidon pyrrhonota, violet green swallowWikispecies-logo.svgCommons-logo.svg Tachycineta thalassina, Mt bluebirdWikispecies-logo.svgCommons-logo.svg Sialia currucoides, buzzardWikispecies-logo.svgCommons-logo.svg Buteo, red tailed hawkWikispecies-logo.svgCommons-logo.svg Buteo jamaicensis, Brewer blackbirdWikispecies-logo.svgCommons-logo.svg Euphagus cyanocephalus, catbirdWikispecies-logo.svgCommons-logo.svg catbird, goldfinchWikispecies-logo.svgCommons-logo.svg Carduelis tristis, red head (sic) woodpeckerWikispecies-logo.svgCommons-logo.svg Melanerpes erythrocephalus, cowbirdWikispecies-logo.svgCommons-logo.svg Molothrus, white throated swiftWikispecies-logo.svgCommons-logo.svg Aeronautes saxatalis, yellow warblerWikispecies-logo.svgCommons-logo.svg Dendroica aestiva, flickerWikispecies-logo.svgCommons-logo.svg Colaptes, robinsWikispecies-logo.svgCommons-logo.svg Turdus migratorius, red wing blackbirdWikispecies-logo.svgCommons-logo.svg Agelaius phoeniceus, Townsend warblerWikispecies-logo.svgCommons-logo.svg Dendroica townsendi,, meadowlarkWikispecies-logo.svgCommons-logo.svg Sturnella, rock wrenWikispecies-logo.svgCommons-logo.svg Salpinctes obsoletus, dipperWikispecies-logo.svgCommons-logo.svg Cinchlus, Bullock orioleWikispecies-logo.svgCommons-logo.svg Icterus bullockii, killdeerWikispecies-logo.svgCommons-logo.svg Charadrius vociferus, long crested jayWikispecies-logo.svgCommons-logo.svg Cyanocitta stelleri, hummingbirdWikispecies-logo.svgCommons-logo.svg Trochilidae, Lincoln song sparrowWikispecies-logo.svgCommons-logo.svg Melospiza lincolnii, piñon jayWikispecies-logo.svgCommons-logo.svg Gymnorhinus cyanocephalus, towheeWikispecies-logo.svgCommons-logo.svg towhee. MeadowlarksWikispecies-logo.svgCommons-logo.svg Sturnella were also common on high plains near WyomingCommons-logo.svgOpenstreetmap logo.svg Wyoming line.

In evening Dodds + I collected PisidiaWikispecies-logo.svgCommons-logo.svg Pisidia in the creek.

Box Elder CreekCommons-logo.svgOpenstreetmap logo.svg Box Elder Creek, Wyoming
Sunday June 9, 1907Wikipedia-logo-v2.svg June 9, 1907

Cold, windy morning, clearing by 9 a.m. but west wind continuing. Arose at 6 a.m. Dodds + I collected PyramidulaWikispecies-logo.svgCommons-logo.svg Pyramidula, ZonitoidesWikispecies-logo.svgCommons-logo.svg Zonitoides, ValloniaWikispecies-logo.svgCommons-logo.svg Vallonia, PupillaWikispecies-logo.svgCommons-logo.svg Pupilla, and PisidiumWikispecies-logo.svgCommons-logo.svg Pisidium after breakfast, then shaved and started down stream at 10 a. m. Visited + photographed the upper falls in the granite rear where the creek reaches the sedimentaria + at the very edge of the granite a joint plane suddenly changes the course of the stream at right angles for 50 or 75 feet where it flows through vertical walls about 60 ft high and 10 feet apart thus ((drawing in field book)). The last jump of the falls is sheer over a vertical 60 ft. wall formed by a joint plane in the granite just before leaving the granite. The granite lies on both sides of the lateral valley which cuts in from the north at the lower fall. In other words the lateral drainage cuts back into the granite as it does in the region of BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, instead of cutting along the contact or into the sedimentaries. This is likely due to the fact that the sedimentaries were laid on a surface of weathered granite. ((at some later date Henderson wrote an emphatic “NO.” at this place in the notebook)). At any rate here the upper part of the granite is weathered, while the lower part is unaffected. If the granite were unweathered there seems no good reason why the cutting should not be in the sedimentaries as they are not particularly resistant, so far as chemical and physical conditions. At least there are soft strata and much rock with soft calcareous cement. In afternoon we went over to South Box ElderCommons-logo.svgOpenstreetmap logo.svg South Box Elder and followed it down to junction with the north branch. Its lower course is very steep through granite, with gneiss about 200 or 300 ft back from the edge of the granite. The north branch runs south from the falls between the granite and the sedimentaries and just below the confluence the combined drainage turns eastward and breaks through the sedimentaries. Immediately above the confluence we found an exposure of 75 feet or more of coarse sandstones and conglomerates, varying from dark red to pure white, and extending to the creek bed. ((several lines crossed out with another “NO.”)) The granite cliffs west of the creek are high and steep, from which one may infer the ancient sea wall from which the pebbles were derived, were it not that no large boulders were observed in the conglomerate. The sedimentaries indicate uplift by their eastward dip, which would undoubtedly involve the granite. Following is a generalized section showing their present relations. E and W section across North Box Elder CreekCommons-logo.svgOpenstreetmap logo.svg North Box Elder Creek, Colorado just above confluence with south branch. ((drawing in field book, view to S with east edge on left)). The conglomerate where so well exposed is very friable and not calcareous, but a slight exposure just below the confluence effervesces freely in acid. The conglomerate is much thicker than we supposed, as we discovered a little later, with a harder band a little above the exposure just mentioned, then softer above. It answers to the Fountain formation at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado except that the cement is weak aside from the ones stratum just mentioned, so that it is covered by debris of the talus slope. Above this are the sandstones, limestones etc., which are equivalent to the Lyons formation at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, a resistant sandstone at the top forming an escarpment on the west and sloping away more gently to the east.

North Box Elder CreekCommons-logo.svgOpenstreetmap logo.svg North Box Elder Creek Monday June 10, 1907Wikipedia-logo-v2.svg June 10, 1907

Strong west wind but warmer than yesterday. Dodds and I started for Sand CreekCommons-logo.svgOpenstreetmap logo.svg Sand Creek, Colorado at 8 a.m. finding a much easier trail over the high Lyons ridge and down to the creek. The east slope of the Lyons escarpment is approximately the same as the dip at the contact between the Lyons and the Lykins formations, the latter lying apparently conformably on the former toward the base of the slope, having been eroded from the upper part of the slope. Sand CreekCommons-logo.svgOpenstreetmap logo.svg Sand Creek, Coloradois nearly dry and the flat sandy bottom about 200 yards wide where we entered it. An elongated (N and S) hill through which Sand CreekCommons-logo.svgOpenstreetmap logo.svg Sand Creek, Coloradocuts about E of our camp is an anticlinal fold in the Lyons formation the west limb dipping very abruptly and the east limb approximately the normal dip for the region. An E and W fold in the same formation occurs about a mile NW of this. North of this hill the entire valley is over 2 miles wide and the anticline and syncline both show beautifully the section being as follows. ((Drawing in field book. I am not sure if this is the same place but similar relations can be seen on US 287 north of Livermore)) E. Sand CreekCommons-logo.svgOpenstreetmap logo.svg Sand Creek, Coloradocuts a trough from N 24˚ E through the N end of anticline then swings over into syncline and cuts through it to junction with W Sand CreekCommons-logo.svgOpenstreetmap logo.svg Sand Creek, Colorado , then both swing E through anticline. The cliff on the S side Sand CreekCommons-logo.svgOpenstreetmap logo.svg Sand Creek, Colorado seems surely Lyons formation. Section as follows, thickness estimated: ((Drawing in field book of layers folded upwards and with descriptions intercalated into the drawing. Numbers from top to bottom)) 1) Sandstone nearly white 10 ft weathers buff massive. 2) Very hard fine pearl gray ? 6 ft massive. 3) Pink thin bedded sandstone, partly cross bedded weathering red 30 ft.? 4 and 5) Very fine grained calcareous sandstone, massive, violetred (?) 30 ft? 6 and 7) Very fine hard clay , slightly effervescent, whitish, 6-10 ft. 8) Pink sandstone, thin bedded weathering red 15 ft massive below. 9) Very fine grained massive sandstone white 9 ft. Apparent dip flatter in actual face of cliff because exposure short.

We measured one face of 20 ft. and from that estimated the whole cliff at 100 ft. Big hill north of fold, in syncline is Lykins at base, dark red and regularly bedded below, lighter red and massive, light pink and very massive in the upper part which forms a bluff. Red and pink massive part about 150 ft in thickness. Above this are about 250 ft. of light colored (mostly gray) limestones and sandstones and clay shales of Morrison age. Above this the slope to the top is covered by Dakota sandstone and conglomerate debris, none in place. Below this exposure we find the red sandstones to the Lyons ridge except for one white band about 20 feet thick everywhere present. Saw 2 white throated swifts on above mentioned hill. On way back we roughly estimated that there is about 200 feet of Lykins below the white zone and about the same above. The white zone itself, including an intermediate reddish zone is 50 ft. or more in thickness. The upper member of the Lyons is eroded back from the edge to make a low ridge and the Lykins still further back, in each case the dip of the strata forming the surface of the hill. Erosion appears to proceed almost wholly at the edges except where drainage breaks through. Wind quieted down very much and it was warm in afternoon.

North Box ElderCommons-logo.svgOpenstreetmap logo.svg North Box Elder Tuesday, June 11, 1907Wikipedia-logo-v2.svg June 11, 1907

East wind this morning, perfectly clear and hot. Dodds and I started N along the Fountain granite contact. In the gulch coming in to N. Box Elder CreekCommons-logo.svgOpenstreetmap logo.svg N. Box Elder Creek from the N we found the drainage line to be practically on the contact in some places. S of the ranch about a mile N of Box Elder FallsCommons-logo.svgOpenstreetmap logo.svg Box Elder Falls in the lateral N and S valley is a strong outcrop of Fountain out in the valley, while up the slope very close to the granite is an outcrop of thin bedded reddish rock, partly fine grained and partly coarse sandstone, all of the latter outcrop effervescing freely. (This we have not found elsewhere). Between the two is an outcrop of chert containing brachiopods of Paleozoic type, which we were able to trace to where the valley turns westward in WyomingCommons-logo.svgOpenstreetmap logo.svg Wyoming, but found no more of the underlying calcareous rocks, but did find the Fountain. At the westward turn of the valley near head of creek in WyomingCommons-logo.svgOpenstreetmap logo.svg Wyoming we found a strong outcrop of Fountain with 6 or 8 ft. of hard gray limestone overlying it, containing numerous fragments of crinoid stems and a few poorly preserved brachiopods. It passed, apparently conformably, beneath the red, thin bedded Lyons ? sandstone (this may be limestone-see tomorrow’s notes), continuing thus northward as far as we could see. We traced the limestone nearly to the Box ElderCommons-logo.svgOpenstreetmap logo.svg Boxelder Creek and reached camp at 6 p.m. with a good load. Saw a night hawkWikispecies-logo.svgCommons-logo.svg Chordeiles minor in WyomingCommons-logo.svgOpenstreetmap logo.svg Wyoming. Jackson and Crawford arrived and camped at Box Elder P.O.Commons-logo.svgOpenstreetmap logo.svg Box Elder P.O. Dodds and I called in the evening and discussed plans.

North Box Elder campCommons-logo.svgOpenstreetmap logo.svg North Box Elder camp Wednesday June 12, 1907Wikipedia-logo-v2.svg June 11, 1907

Dodds, Crawford, Jackson and I started down N. Box ElderCommons-logo.svgOpenstreetmap logo.svg North Box Elder Creek, Colorado in the morning. Found the crinoidal limestone just below N Box Elder fallsCommons-logo.svgOpenstreetmap logo.svg Box Elder Falls, Colorado well up on talus slope of Lyons escarpment in form of boulders and in one ledge in place, where Dodds and Jackson obtained one brachiopodWikispecies-logo.svgCommons-logo.svg brachiopod. It has more of a reddish ting than further north. Just below junction of N and S Box ElderCommons-logo.svgOpenstreetmap logo.svg Box Elder Creek is a strong ledge of limestone resting on typical Fountain conglomerate, with about 20 ft. of Fountain above the limestone. Above the 2o ft. zone of Fountain is the thinner bedded, finer grained Lyons sandstone, limestones etc. The thickness of the Fountain is difficult to ascertain, but we found it extending to the bed of the creek with but a narrow zone of debris intervening between it and the granite. There is not less than 200 ft of Lyons here and probably considerably more. About a mile S of Box ElderCommons-logo.svgOpenstreetmap logo.svg Box Elder is a formation resting on granite which looks as if it were metamorphosed Fountain, but contains no pebbles and no large feldspar crystals. It is full of mica, thin bedded dipping N. 24˚ E. I believe it is weathered shistose (sic) granite. Continuing southward we found it frequently above the hard unweathered granite. At the ranch above mentioned I found Fountain conglomerate resting on granite and at the very contact, with an east slope, found a piece of chert containing brachiopodsWikispecies-logo.svgCommons-logo.svg brachiopods. Further south on the east side of the valley, up on the escarpment we found the crinoidal limestone in Fountain conglomerate, with several other limestones of similar character above, alternating with conglomerate and sandstone, just as we found it in WyomingCommons-logo.svgOpenstreetmap logo.svg Wyoming. The thin bedded formation mentioned in yesterday’s notes as overlying the crinoidal limestone may be a limestone as a similar zone here is. We have not found any other outcrop of the limestone beneath the chert at the ranch NE of camp. Where the strike turns westward I found a nonfossiliferous limestone in the Fountain and in a higher horizon found the crinoidal limestone. Strike N. 30˚ E. forming a syncline next to the foothills with axis approximately E., N limb steep, dip about 30˚ bearing S 5˚ W. Dip of S limb very gentle. Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado Occupies base of syncline. ((visible from US 287)) Section E of Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado Where strike changes to west ((drawing in field book)) Section through Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado Where road swings around west of Red Mt in a valley, following the creek, To the N, W and S the sedimentaries have been removed unless it be the base of the Fountain, leaving a gently sloping plain, sloping from the west to the creek bed. We have now traced the chert horizon near the base of the sedimentaries from WyomingCommons-logo.svgOpenstreetmap logo.svg Wyoming to the place where the strike turns westward toward Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado, finding brachiopodsWikispecies-logo.svgCommons-logo.svg brachiopods frequently most of the way. Also traced the lower crinoidal limestone to the same point, but found no brachiopods in it after leaving the Box ElderCommons-logo.svgOpenstreetmap logo.svg Box Elder Creek, Colorado. Saw 2 {taxon|Buteo|buzzards}} and 1 red tailed hawkWikispecies-logo.svgCommons-logo.svg Buteo jamaicensis at junction of N and S Box ElderCommons-logo.svgOpenstreetmap logo.svg Box Elder Creek, Colorado.

Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado Thursday June 13/07Wikipedia-logo-v2.svg June 13, 1907

Dodds and I started on horseback NW from camp on Ten Mile CreekCommons-logo.svgOpenstreetmap logo.svg Tenmile Creek, Colorado, just S of Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado, to examine the plain to the WNW and SW which appears to be approximately the ancient sea floor, from which most of the sedimentaries have been eroded. On the divide between Ten MileCommons-logo.svgOpenstreetmap logo.svg Tenmile Creek, Colorado and Lone TreeCommons-logo.svgOpenstreetmap logo.svg Lone Tree Creek, Colorado creeks NW of Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado, we measured dip of Fountain conglomerate and found it to be 6 deg. Bearing N. 30˚ E. The conglomerate covers a considerable portion of the plain. ¼ mi. further N dip is 6˚ S. 13˚ W., a valley occupying the syncline here, the sec. fence passing through the valley. It is probably the Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado Syncline. 300 yds further N of last mentioned outcrop is an outcrop of thin bedded limestone resting on Fountain conglomerate and bearing N. 25˚ E. The dip is about 30˚ bearing E, but blocks are tilted in every direction. To the east I failed to find a corresponding dip from the granite westward to form the east limb of the syncline. The relations are about thus: ((drawing in field book)). NW is a white quartz blowout on a high hill on E side Deadman CreekCommons-logo.svgOpenstreetmap logo.svg Deadman Creek, Colorado. It bears N 29˚ W from Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado. And S 25˚ E of Virginia Dale Mt.Commons-logo.svgOpenstreetmap logo.svg Virginia Dale Mt., Colorado The quartz continued on SW as an interrupted ridge and also occurs on S side of this plain, in each case not more than a mile or so into the granite. About a mile S of the first mentioned outcrop, the conglomerate dips 4˚ bearing S 48˚ E. In that vicinity, as usual, the outcrop of Fountain and granite is occupied by a valley. Fountain approaches one quartz blowout very closely. S 40˚ W of Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado Is coarse conglomerate, with pebbles up to 4 inches in diameter lying directly on an uneven eroded surface of rotten, deep red granite, contact showing for100 ft., conglomerate dipping 10˚ bearing about E. The center of the plain for some distance back is covered with a thin remnant of Fountain conglomerate thus showing approximately the ancient sea bottom. Another inlet (sic) of the Fountain, including the upper beds extends far west of LivermoreCommons-logo.svgOpenstreetmap logo.svg Livermore, Colorado. It is a syncline> At LivermoreCommons-logo.svgOpenstreetmap logo.svg Livermore, Colorado dip is only about 20 to 40 bearing NE. Camped at Owl canyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado at 6 p.m.

Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado, Friday June 14/07Wikipedia-logo-v2.svg June 14, 1907

Dodds and I started up canyon on foot in morning and in narrow part, west of bridge, in limestone at top of next to top limestone bench found brachiopodsWikispecies-logo.svgCommons-logo.svg brachiopods of carboniferous type. In a much lower horizon where limestone is a conglomerate laid on an eroded surface. It is in a crushed zone, however, and the apparent nonconformity may be due to crushing. Below the conglomerate just mentioned are red thin bedded slightly calcareous sandstone dipping 10˚ N. 63˚ E., which is in turn underlaid by conglomerate unconformable on lower similar sandstones and then other conglomerates all slightly calcareous in places. Section at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado, top and bottom reversed. -Granite -Covered zone, 25 ft., perhaps weathered granite as at Red Mt.Commons-logo.svgOpenstreetmap logo.svg Red Mt., Colorado Very massive, hard, coarse conglomerate, dip 15˚ bearing N. 63˚ E. 8 ft. same conglomerate appearing at intervals above debris for 200 yds to E with rotten deep red conglomerate in upper 100 yds, of considerable thickness -Covered zone of 200 yds or more with 4 or 5 ft of hard gray limestone about midway -Pinkish gray calcareous sandstone, rather thin bedded. Dip same as above, upper half contains crinoids perhaps may be called a limestone, al moderately fine grained. 25 ft. -Very dark red coarse rotten sandstones and conglomerates with pebbles leaching white 15 ft. -Mostly lighter colored, finer grained, harder and thin bedded sandstones, some zones massive and a little of the coarse dark red 35 ft., forming mild escarpment with the two preceding numbers as the lower part of the slope, on S side of lateral gulch of Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado. -Same as above, planed edges occupying the gentle E slope of escarpment and intervening valley between it and main escarpment, estimated at 25 ft. -Massive pinkish limestone in bed of creek about 5 ft. -Covered, with intermediate massive conglomerate estimated at 15 ft (in creek bottom (sic) -Soft rotten reddish and whitish streaked, remarkably crossbedded, coarse conglomerate with an intermediate thin bedded red sandstone and some strong evidence (of erosion?) above sandstone member 44 ft. -Thin bedded fine grained, hard sandstone 16 ft. Left the section of the main escarpment to be finished by Dodds, upon arrival of Crawford, Underhill and Jackson. We all visited the gypsum beds together. After lunch Crawford, Robbins and Dodds continued measurements of the Carboniferous section, while Underhill, Jackson and I examined the Chugwater and Jurassic. After Underhill, Crawford and Jackson left at 4 p.m. Robbins and I went down to the Niobrara formation on horseback. Found the basal limestone not so massive as at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, containing Inoceramus deformisWikispecies-logo.svgCommons-logo.svg Inoceramus deformis, Ostrea congestaWikispecies-logo.svgCommons-logo.svg Ostrea congesta and an OstreaWikispecies-logo.svgCommons-logo.svg Ostrea and an InoceramusWikispecies-logo.svgCommons-logo.svg Inoceramus new to me. It is underlaid by 3 or 4 ft. of sandstone, below which is the Benton shale. The Niobrara here divides into two high ridges with a minor one and another still lower in between. In the latter 3 are Ostrea congestaWikispecies-logo.svgCommons-logo.svg Ostrea congesta on an unknown large flat InoceramusWikispecies-logo.svgCommons-logo.svg Inoceramus as further south. At camp the upper Lyons passes by transition from limestones and calcareous red, pink and gray sandstones through the pink Ten Sleep sandstone to the dark red Lykins shales, thence to the Jura. Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado section completed by Dodds. -Sandstone, calcareous, pinkish, more massive than below, crossbedded and nearer limestone than sandstone at top, mostly covered with talus 40 ft. -Sandstone, red, medium to fine grained, calcareous, rather thin bedded, crossbedded 36 ft. -Friable, fine-grained sandstones and shale, mostly red 5 ft. -Friable coarse sandstone 1 ft. -Red sandstone, calcareous, rather thin bedded, with flagstone appearance 1 ½ ft. -Red sandy shale 1 ft. -Sandstone, calcareous, red, fine-grained partly massive or thick bedded and partly flaggy, some strata friable, some crossbedding, estimated 20 ft. -Sandstone, coarse, crossbedded, friable, dark red 2 ft. Varies in thickness and unconformable on surface below. -Sandstone, calcareous, banded red and white, very hard, flaggy, like Lyons 1 ½ ft. -Shale, sandy, red ferruginous, interlaid with lenticular bodies of gray limestone, becoming conglomeratic at top 6 ft. -Sandstone, pink, calcareous, coarse, laminated in color, not in apparent structure, but weathering into thin beds 15 ft. -Sandstone, fine, massive red or mottled 17 ft. -Limestone, gray, massive, ridge maker, 6 ft., making lowest bench -Sandstone, red, thin bedded, cross bedded, upper part usually massive, estimated 30 ft. crinoidal -Limestone, gray, massive, very hard, strong ridge maker, first real ridge maker, containing brachiopodsWikispecies-logo.svgCommons-logo.svg brachiopods 15 ft. -Sandstone, pink, medium grained, thin and cross bedded, like Lyons 20 ft. -Limestone, massive, gray, very hard strong ridge maker, highest ridge here, 24 ft. -Sandstone, fine grained, pink, mostly thin bedded, partly massive, near bottom making weak ridge; thin bedded part cross bedded, mostly weathering rapidly 50 ft. lies on E slope of escarpment -Sandstone, gray or yellowish, coarse or medium, rather strong making low escarpment 2 ft. -Sandstone, red, thin bedded, one zone dark and rather shaley, all fine grained, weathers readily 33 ft. -Chugwater or Lykins red shales, with strong Gypsum zone -Jurassic buff and gray sands and shale -Dakota sandstones with intercalated shales -Benton shales (found no limestone bands) -Niobrara in several ridges.

All below the Chugwater effervesces freely in acid, unless the lower conglomerates. The base of the sedimentaries consists of coarse conglomerate, gray to dark red and hard to friable. They are not sharply divided from the Lyons beds above, but pass into the latter by a zone of alternating coarse sands and conglomerates and fine grained sandstones, gradually becoming more calcareous. The Lyons equivalent differs from the beds near BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado in containing limestones, and in being more easily eroded and softer in general, more or less calcareous. The Lyons grades into the Lykins by an alternation, the pink sandstone being overlaid by a few feet of deep red clay, then another few feet of pink sandstone, then the red beds begin in earnest. The North Poudre DitchCommons-logo.svgOpenstreetmap logo.svg North Poudre Ditch turned into the {{place}Box Elder Creek, Colorado|Box Elder}} has started a period of deep erosion which is extending up the lateral gulches by headward progression.

Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado, Saturday June 15, 1907Wikipedia-logo-v2.svg June 15, 1907

Left for Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado at 7:30 a.m., Robbins and I in the saddle. Visited the Belleview fold on way down. Found it was Lyons formation, very narrow, the dips on the west limb very steep (estimated at 60˚), the Poudre cutting through it, while Belleview occupies the syncline to the west. Reached CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Coloradoat 11:15 and had boxes ready etc. for shipment at 11:45. Dined at hotel and took 2:05 p.m. train, reaching BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado at 4 p.m. It has been a very hot day with a hot wind.

Magnola-Rollinsville, South Boulder Canyon, Left Hand Canyon[edit]

Trips Aug and Sept. 1907



MagnoliaCommons-logo.svgOpenstreetmap logo.svg Magnolia, Colorado-RollinsvilleCommons-logo.svgOpenstreetmap logo.svg Rollinsville, Colorado Aug. 22, 1907Wikipedia-logo-v2.svg August 22, 1907

Dr Ramaley and I started by team at 7 a.m. On divide SW of MagnoliaCommons-logo.svgOpenstreetmap logo.svg Magnolia, Colorado we stopped and collected mollusca and plants, with a few scale insects etc. Then drove to the lake beyond the school house. In the lake we collected leaches, crustacea, water beetles, frogs etc. and the following mollusca: Lymnaea palustrisWikispecies-logo.svgCommons-logo.svg Lymnaea palustris Calyculina sp.Wikispecies-logo.svgCommons-logo.svg Calyculina Planorbis exacuous (sic)Wikispecies-logo.svgCommons-logo.svg Planorbis


In the quaking aspenWikispecies-logo.svgCommons-logo.svg Populus tremuloides groves and willowsWikispecies-logo.svgCommons-logo.svg Salix along the divide we collected the following mollusca:

Pyramidula cronkhitei anthonyiWikispecies-logo.svgCommons-logo.svg Pyramidula cronkhitei anthonyi - common Vallonia cyclophorellaWikispecies-logo.svgCommons-logo.svg Vallonia cyclophorella- scarce, only found at Pine Glade School Succinea cf. avaraWikispecies-logo.svgCommons-logo.svg Succinea ? a few Vitrina alaskanaWikispecies-logo.svgCommons-logo.svg Vitrina alaskana common Zonitoides arboreusWikispecies-logo.svgCommons-logo.svg Zonitoides arboreus common Euconulus trochiformisWikispecies-logo.svgCommons-logo.svg Euconulus trochiformis common Cochlicopa lubricaWikispecies-logo.svgCommons-logo.svg Cochlicopa lubrica 1 specimen PupillaWikispecies-logo.svgCommons-logo.svg Pupilla or Bifidaria sp.Wikispecies-logo.svgCommons-logo.svg Bifidaria

Reached home at 6:45

South Boulder CanyonCommons-logo.svgOpenstreetmap logo.svg South Boulder Canyon Via Flagstaff road Aug 24, 1907Wikipedia-logo-v2.svg August 24, 1907

Dr. Ramaley and I started for South BoulderCommons-logo.svgOpenstreetmap logo.svg South Boulder, Colorado by team at 7 a.m. and stopped at Kossler ranchCommons-logo.svgOpenstreetmap logo.svg Kossler Ranch, Colorado and he collected plants while I collected mollusca. In aspensWikispecies-logo.svgCommons-logo.svg Populus found Vallonia cyclophorellaWikispecies-logo.svgCommons-logo.svg Vallonia cyclophorella common Vitrina alascana (sic)Wikispecies-logo.svgCommons-logo.svg Vitrina alaskana a few Succinea cf avaraWikispecies-logo.svgCommons-logo.svg Succinea a few Zonitoides arboreusWikispecies-logo.svgCommons-logo.svg Zonitoides arboreus common Pupilla sp.Wikispecies-logo.svgCommons-logo.svg Pupilla a few Euconulus trochiformisWikispecies-logo.svgCommons-logo.svg Euconulus trochiformis

In the edge of pine forest under pine boughs (Pinus scopulorumWikispecies-logo.svgCommons-logo.svg Pinus scopulorum) found Z. arboreusWikispecies-logo.svgCommons-logo.svg Zonitoides arboreus and Vallonia cyclophorellaWikispecies-logo.svgCommons-logo.svg Vallonia cyclophorella sparsely. On South Boulder below the Longridge MillCommons-logo.svgOpenstreetmap logo.svg Longridge Mill, Colorado found also Agriolimax campestrisWikispecies-logo.svgCommons-logo.svg Agriolimax campestris. Not good collecting ground for mollusca. PyramidulaWikispecies-logo.svgCommons-logo.svg Pyramidula notably absent, though common SW of MagnoliaCommons-logo.svgOpenstreetmap logo.svg Magnolia, Colorado. Saw 50 nighthawksWikispecies-logo.svgCommons-logo.svg Chordeiles minor flying S by SW in a scattered flock S of Kossler ranchCommons-logo.svgOpenstreetmap logo.svg Kossler Ranch, and 20 piñon jaysWikispecies-logo.svgCommons-logo.svg Gymnorhinus cyanocephalus by roadside near head of Gregory CanyonCommons-logo.svgOpenstreetmap logo.svg Gregory Canyon, Colorado.

Saturday Sep. 6, 1907Wikipedia-logo-v2.svg September 6, 1907 Left Hand canyonCommons-logo.svgOpenstreetmap logo.svg Left Hand Creek, Colorado

Started with Nellie Rust, Lillian McCracken and Mrs. Henderson at 8:10 for mouth of Left hand CanyonCommons-logo.svgOpenstreetmap logo.svg Left Hand Creek, Colorado with team and surrey from Fields and Lucas’ stable. Took Red HillCommons-logo.svgOpenstreetmap logo.svg Red Hill, Colorado road and reached Left HandCommons-logo.svgOpenstreetmap logo.svg Left Hand Creek, Coloradoat 10:15. Fountain conglomerate and sandstone there several hundred feet thick and well exposed north of creek just above where we reached Left HandCommons-logo.svgOpenstreetmap logo.svg Left Hand Creek, Colorado. Chiefly hard, coarse red sandstones with bands of coarser conglomerates in places very rich dark red with white patches as if from leaching out of iron oxides. S of creek dip N. 63˚ E = 30˚ near contact and 38˚ near top of Fountain. N of creek Fountain exposure is 150 paces horizontal extent E and W with dip 30 to 40 degrees easterly. Formation strongly arkose, with some traces of lime on some exposed surfaces. Down creek a short distance below where the stream turns northward about 200 ft (156 ft measured, balance estimated) occurs east of stream beneath the Lyons or part of it. It appears not as hard as that west of creek and is comparatively free of feldspar crystals. In the creek bed between these two exposures is a bed of thin bedded rather fine grained intensely red (dark) sandstone, 8 or 10 ft.? The relations are about thus ((drawing in field book)). The upper friable conglomerate is exactly like that on N. Box ElderCommons-logo.svgOpenstreetmap logo.svg North Box Elder Creek, Colorado just above junction with S forkCommons-logo.svgOpenstreetmap logo.svg South Box Elder Creek, Colorado, but is not at all effervescent. At Box ElderCommons-logo.svgOpenstreetmap logo.svg Box Elder, Colorado, however, there is no hard conglomerate beneath it. It rests on the granite. I am inclined to believe the hard stuff is older and begins to com in at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado where I found it in contact with the granite. After dinner I found outcrops of the conglomerate in the creek bed and west of the creek in such position as to practically connect the different conglomerates through the covered zones. The clear exposure of conglomerate E of creek measured this morning has a pinkish appearance due to the intermingling of white and red, making a well defined difference in color from the evenly reddish overlying Lyons sandstone. The conglomerate passes gradually into the Lyons by variable beds, varying in thickness from minutely to coarsely crossbedded, very irregular in stratification, with undoubted evidence eddying shore currents. The main body of the Lyons forms a nearly vertical face of the escarpment above the fountain slope and is rather uniformly thin bedded and fine grained. The east slope of the escarpment about follows the dip. Lyons has strong regular crossbedding instead of irregular as in the Fountain thus ((drawing in field book)). The directions of dip are often exactly reversed.

Geology Society Accounting[edit]

Geological Survey Account Oct 2, 1907Wikipedia-logo-v2.svg October 2, 1907 Fare 2.50 " 4 " Hotel & stable LivermoreCommons-logo.svgOpenstreetmap logo.svg Livermore, Colorado 5.00 " " " Train ___ Ave

Fort Collins Trip 2[edit]

Fort Collins Trip 2 Oct. 2-27, 1907



Ft Collins, Colo.Commons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado Wednesday Oct. 2, 1907

Left BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado at 5:20 p.m. on time arrived Ft CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado 7:30, 10 minutes late, 45 miles. Day closed cloudy and threatening, but clouds showed westerly air currents. Went to Northern Hotel, and had supper. Nellie accompanied me.

Thursday Oct. 3, 1907Wikipedia-logo-v2.svg October 3, 1907

A cloudy gloomy morning and cool, with a north wind. We started by team for LivermoreCommons-logo.svgOpenstreetmap logo.svg Livermore, Colorado at 7:30 a.m. Stopped to examine and map the fold north of La PorteCommons-logo.svgOpenstreetmap logo.svg La Porte, Colorado in Dakota sandstone. In this region the escarpments and dips are such that folds can be detected at great distance by changes in the strikes of ridges. The Jurassic is well up on the slope of the Dakota escarpment except just inside cache La Poudre CanyonCommons-logo.svgOpenstreetmap logo.svg Cache la Poudre Canyon, where it occupies the valley or a portion of it. Heard meadowlarksWikispecies-logo.svgCommons-logo.svg Sturnella singing all along the road. Saw one good sized flock of bluebirdsWikispecies-logo.svgCommons-logo.svg Sialia and many sparrow hawksWikispecies-logo.svgCommons-logo.svg Accipiter. Along the “Lykins” valley from the La Porte fold to Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado there are two light colored low ridge making sandstones at the Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado end of the area and one at the southern end. Made coffee and ate lunch at Owl canyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado at noon. At 12:45 it cleared off rapidly. Hitched up and drove out to the mouth of the canyon at 1 p.m. In the sandy shales between the two sandstone ridges of the Dakota we found a 4- inch stratum literally filled with OstreidaeWikispecies-logo.svgCommons-logo.svg Ostreidae, but in very poor condition. Collected a lot, hoping that some of them might prove determinable. Reached LivermoreCommons-logo.svgOpenstreetmap logo.svg Livermore, Colorado at 5 p.m., stopped at Ramer House, C. W. Ramer, proprietor. Alt 5733, B.M. ((bench mark)) in sidewalk in front of hotel.

Livermore, Colo.Commons-logo.svgOpenstreetmap logo.svg Livermore, Colorado Oct. 4, 1907Wikipedia-logo-v2.svg October 4, 1907

White frost this morning. I arose at 6 a.m. and looked around a little before breakfast. Drove west. About a mile west of LivermoreCommons-logo.svgOpenstreetmap logo.svg Livermore, Colorado just N of road is an apparent fault through contact of Fountain and Lyons, SE side of fault dipping NW 50˚ and NW side dipping NE thus ((drawing in field book)). Upon more careful examination I found it was plainly a very sharp fold, thus ((drawing in field book)). Other changes in dip immediately west, then dip becomes normal and continues so to the granite. NE of where Rabbit CreekCommons-logo.svgOpenstreetmap logo.svg Rabbitt Creek, Colorado emerges from the granite the Fountain appears to butt squarely into the abrupt slope of the granite granite thus: ((drawing in field book)). Lunched at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado at noon and started on at 1 p.m. 1st gulch S of Engleside (sic) I left the team with Nellie and started back of the Lyons ridge on foot. In Fountain-granite contact just S of gulch is a white quartz outcrop, strike N of W, large chunks of quartz rolling down over the Fountain. It makes a ridge. Fountain and Lyons same here as at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado, Fountain barely standing up on granite slope. From there south to where the strike changes abruptly to the west the Fountain, if it exists west of the thread of the valley, is covered with soil on the granite slope. It appears at the base of the Lyons escarpment all along, but, as northward, is weak and usually but little seen in the valley or the granite slope. Reached Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado at 5:20. After supper called for Kittle, J. L. Bartlett and Mrs. Collins by phone at GreeleyCommons-logo.svgOpenstreetmap logo.svg Greeley, Colorado and BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado but did not reach Mrs. Collins. Saw 29 crowsWikispecies-logo.svgCommons-logo.svg Corvus in on((e)) flock near Ingleside flying SE. Bright warm day.

Ft. Collins, Colo.Commons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado Oct. 5Wikipedia-logo-v2.svg October 5, 1907

I started for La PorteCommons-logo.svgOpenstreetmap logo.svg La Porte, Colorado and BelleviewCommons-logo.svgOpenstreetmap logo.svg Belleview, Colorado at 7:45 on horseback, leaving at the hotel Nellie who expects to go to GreeleyCommons-logo.svgOpenstreetmap logo.svg Greeley, Colorado on the morning train, where she will join the Kittle auto party for BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado. Where the road to BelleviewCommons-logo.svgOpenstreetmap logo.svg Belleview, Colorado crosses the “Dakota” sandstone it is divided into two distinct and massive members with a covered interval of 100 yds or more. Back (west or NW) of that, in the middle Lykins, we find the same light colored, crossbedded ridge making sandstone so persistent further north. At N end of BelleviewCommons-logo.svgOpenstreetmap logo.svg Belleview, Coloradofold on west slope the dip is 30˚ W by N, that limb not having been entirely eroded away by the Cache a la PoudreCommons-logo.svgOpenstreetmap logo.svg Cache la Poudre River, but the stream is now undermining it into the bluff at one place thus, looking south ((drawing in field book)). In the bay NW of Belleview fold, where the road running W on the N side of river passes the end of the Lyons ridge, and a lot of rock is thrown out, the formation is very red and massive. Dip N 6˚, 25˚. Along the stream which flows east of the ridge, but S of the road, the light colored crossbedded Lykins sandstone follows the W side of the stream, dip 20˚. S of the river this sandstone makes a high ridge, and they have quarried the massive red Lyons sandstone. I lunched, fed the pony and rested at 12 n. to 1 p.m. Where I rested the tree sparrowsWikispecies-logo.svgCommons-logo.svg Spizella arborea and chickadeesWikispecies-logo.svgCommons-logo.svg Poecile were abundant. I saw a killdeerWikispecies-logo.svgCommons-logo.svg Charadrius vociferus. MeadowlarksWikispecies-logo.svgCommons-logo.svg Sturnella were singing here as the house finches are in town. Very few outcrops in the bay NW of Belleview fold, but enough to show the relations of formations The normal Lyons monocline next to granite is much more like typical Lyons further south, but still with some limestone bands (thin) and calcareous sandstones, as shown by effervescence. At Belleview light colored Lykins sandstone is good building stone and flagging, particularly the latter. The Belleview anticline is an elongated dome NW and SE. The river has cut through the Lyons and very deep into the Fountain, which is well exposed in the escarpment on E side of the river but covered in the valley. West of Lyons normal monocline escarpment, NW W and SW of Belleview the Lyons outcrops in very few places, but is occasionally exposed on the western slope of the valley, and on the south bank of the Cache a la PoudreCommons-logo.svgOpenstreetmap logo.svg Cache la Poudre River nearly the whole series is exposed. The E and W cross section W of Belleview: ((drawing in field book, W to left and E to right)). SW of Belleview, again, again I found the uniform decidedly red (not as deep red as the Lykins except the crossbedded sandstone) Lyons, but not even a narrow white limestone band as a mile or so further N. N to the WyomingCommons-logo.svgOpenstreetmap logo.svg Wyoming line and also in the Belleview anticline the Lyons is variegated, banded broadly by alternating pinkish or reddish and grayish or whitish zones. Nothing of this kind appears SW of Belleview and but a narrow band of gray a mile north of that locality. The Lykins remains very deep red, thinbedded, with the white ridge making member, always strongly crossbedded, in about the middle of the series. Hot and dry, and bright day.

Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado, Oct 6, 1907Wikipedia-logo-v2.svg October 6, 1907

Left Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado on the 8 a.m. train, arrived in C about on time. Hot and bright.

Ft. Collins, Colo.Commons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado Tuesday, Oct. 8, 1907Wikipedia-logo-v2.svg October 8, 1907

Left BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, on 9:28 train, about 15 minutes late. Bright, beautiful morning. Dined at Northern Hotel, then drove north past Terry lake to Rocky Ridge reservoir No. 1Commons-logo.svgOpenstreetmap logo.svg Rocky Ridge reservoir No. 1, about six miles. Found Fossil Creek sandstone just E of Terry LakeCommons-logo.svgOpenstreetmap logo.svg Terry Lake, Colorado. The road practically follows the ridge made by the sandstone. It is just as at Fossil Ridge, S of Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado, sloping gently on the east side of the ridge and more steeply on the west side. At Rocky ridge Reservoir No. 1Commons-logo.svgOpenstreetmap logo.svg Rocky ridge Reservoir No. 1 it forms steep, much dissected, bluffs, which give to the reservoir its name. The dip changes rapidly at the latter place. Along the ridge from Terry LakeCommons-logo.svgOpenstreetmap logo.svg Terry Lake, Colorado northward the dip is easterly and only about 5˚. Then it changes to N and then N by NW (remains about 4˚ or 5˚) and swings around to the north end of Rocky Ridge Reservoir No. 1Commons-logo.svgOpenstreetmap logo.svg Rocky Ridge Reservoir No. 1, the strike changing in response to change of dip. There is a series of reservoirs about which large flocks of ducks and numerous large gulls were flying. The sandstone, as at Fossil Ridge, contains large numbers of Inoceramus oblongusWikispecies-logo.svgCommons-logo.svg Inoceramus oblongus and some of the other InoceramusWikispecies-logo.svgCommons-logo.svg Inoceramus found at Fossil Ridge, but I only saw two or three Pinna lakesiiWikispecies-logo.svgCommons-logo.svg Pinna lakesii and Baculites compressusWikispecies-logo.svgCommons-logo.svg Baculites compressus, one CallistaWikispecies-logo.svgCommons-logo.svg Callista, one Scaphites nodosusWikispecies-logo.svgCommons-logo.svg Scaphites nodosus, and a very few Ostrea cf. O. inornataWikispecies-logo.svgCommons-logo.svg Ostrea. Anomia raetiformisWikispecies-logo.svgCommons-logo.svg Anomia raetiformis is common and there are some Halymenites majorWikispecies-logo.svgCommons-logo.svg Halymenites major. I saw no PlacenticerasWikispecies-logo.svgCommons-logo.svg Placenticeras or other fossils except those mentioned. The formation is practically the same as at Fossil CreekCommons-logo.svgOpenstreetmap logo.svg Fossil Creek, gray sandstone containing numerous ironstone concretions, some several feet in diameter, the formation having a tendency toward forming an escarpment on the west side of the ridge and a gentle slope on the east side.

Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado, Oct. 9, 1907Wikipedia-logo-v2.svg October 9, 1907

Started for mouth of Owl canyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon at 7:55 (25 minutes late on account of slowness of livery man) with team and driver from Mt. Ave. stable. Took the road running north from La PorteCommons-logo.svgOpenstreetmap logo.svg La Porte, Colorado, following the Niobrara ridge most of the way. Found Benton formation mostly covered in a valley west of Niobrara, but outcropping in places as a calcareous sandstone just below Niobrara limestone, indeed forming a trans- -tion zone to the limestone. Niobrara about as elsewhere, the three ridges usually showing, the eastern one often making an abrupt slope to the Pierre valley. No Pierre exposed so far as I saw, occupying a rather flat undissected valley. To the east could see Fossil Creek sandstone extending northward from where I traced it yesterday. Niobrara contains I. deformisWikispecies-logo.svgCommons-logo.svg Inoceramus deformis and O. congestaWikispecies-logo.svgCommons-logo.svg Ostrea congesta in about the usual condition as from BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado northward. Arrived where Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado breaks through Dakota ridge at 10:45. I got out and the driver went to the ForksCommons-logo.svgOpenstreetmap logo.svg Forks Hotel, Livermore, Colorado to get his dinner and feed the horses. In the upper Niobrara I noticed some tendency toward minor folds where the big ditch cuts through it 4 or 5 miles S of Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado, but I did not examine the region particularly, merely noting a few dips. At Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado(mouth of) found great numbers of OstreaWikispecies-logo.svgCommons-logo.svg Ostrea and InoceramusWikispecies-logo.svgCommons-logo.svg Inoceramus. The latter look very much like I. labiatusWikispecies-logo.svgCommons-logo.svg Inoceramus labiatus. They occur in calcareous bands about half way down the west slope of the upper sandstone member of the Dakota ridge. Beginning at top of ridge we find, not the usual hard, thick bedded sandstone, but a softer thin bedded sandstone, weathering rapidly, perhaps 20 feet thick with numerous fucoids ? Below this are possibly 50 feet of sandy shales, including fossiliferous calcareous bands, the pure sands not at all calcareous. Below this 30 ft. or more of noncalcareous, thin bedded black and gray shales, much like those of the Benton and Pierre, non-fossiliferous extending to bottom of lateral gulch. Below this, on east slope of west ridge, friable sandstone. This is underlaid by typical hard “Dakota” sandstone and conglomerate which forms the crest of the second ridge thus: ((drawing in field book)). Nearly a mile north of the road there is either a fault or fold in the Dakota, N and S, thus (( drawing in field book)). Exposures too poor to determine the exact condition. Nearly a mile north of the road there is either a fault or fold in the Dakota, N and S, thus (( drawing in field book)). Exposures too poor to determine the exact condition.

Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado, Oct 10, 1907Wikipedia-logo-v2.svg October 10, 1907

Left hotelCommons-logo.svgOpenstreetmap logo.svg Forks Hotel, Livermore, Colorado at 7:30 on a horse from the stable back of Bell’s which makes a specialty of saddle horses. Road west on road which crosses the railroad at the Passenger depot. At mouth of gulch found Niobrara and Benton in usual position, all covered except basal Niobrara limestone, which makes a low ridge. The lower Benton, however, has been rather extensively quarried for brick making south of the road, making a fair exposure, in the upper part of which I found a thin bed of OstreaWikispecies-logo.svgCommons-logo.svg Ostrea, apparently the same undescribed species found at Six MileCommons-logo.svgOpenstreetmap logo.svg Six Mile, N of BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, and in the same condition, with other thin limestone strata above it. Here the Dakota forms 3 distinct benches. The Lykins has a dip of 27˚, the medial ridge making member rises nearly as high as the Lyons, with the valley consisting of a lateral running each way from the pass, but not very deep at the pass thus: ((drawing in field book)). The Lykins and the Lyons are both quarried, the former to a limited extent, the latter extensively. The Lyons furnishes large, fine blocks of flawless sandstone of a uniform red color, not very intense red. It is much thicker here than a short distance northward, massive and uniform, sharply differentiated from the Fountain in the escarpment both in texture and color, but conformable. The basal and (?) third beds 15 or 20 ft thick are strongly crossbedded in the escarpment where it faces SW, thus: ((drawing in field book. Caption= Fountain purplish red coarse sand and conglomerate)). A large part of the Fountain here is quite calcareous, in places might be called limestones almost. It passes abruptly into noncalcareous fine red sandstone above, but conformably. Could find no fossils. There are probably over 200 feet of Fountain and same amount of Lyons up to Ten Sleep sandstone. There is a little lime in Lyons in places above base but no well defined horizons and no limestone. In Lykins above the cross bedded sandstone is a limestone band similar to that at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado which has been burned for lime. The Dakota has been quarried a little at one place. The Fountain is friable and occupies a north and south valley as northward with tendency to harden at very base as at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado. Cross bedding in Lykins ridge at Spring CanyonCommons-logo.svgOpenstreetmap logo.svg Spring Canyon, Colorado thus ((drawing in field book)). The Morrison from where I struck foothills south for at least several miles is covered with talus except in one or two places, which show its existence plainly. At StoutCommons-logo.svgOpenstreetmap logo.svg Stout, Colorado, in Spring CanyonCommons-logo.svgOpenstreetmap logo.svg Spring Canyon, Colorado there is a 6 foot stratum of hard crystalline limestone near top of Lyons, just below Ten Sleep sandstone. The formation is much thinner than where I struck the foothills 4 ½ miles north, not really so massive, and separated from Fountain by the same sharp line, though 40 ft down in the conglomerate is a 10 foot band not distinguishable from the Lyons above. On the whole the appearance of the escarpment is much more like that at Owl canyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado than it was at BelleviewCommons-logo.svgOpenstreetmap logo.svg Belleview (not the fold) or 4 ½ miles north of here. Southward found a good exposure of Morrison on slope of Dakota ridge, consisting, as usual of soft, variously tinted sandstones and shales, underlaid by Lykins thin bedded, red sandy shales, including massive layer in which Fenneman thought he had found fossils at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado (containing concretions of some sort) and the Morrison overlaid by “Dakota” conglomerate. A little further south about 25 or 30 feet of hard limestone is exposed at top of Morrison and formation seems much thicker. This limestone probably exists at first outcrop, but if so is covered by talus. Finished the Ft. Collins quadrangle and not having the Loveland sheet with me and the horse being tired, I came home reaching the hotelCommons-logo.svgOpenstreetmap logo.svg Forks Hotel, Livermore, Colorado at 4 p.m. very tired. Worked hard all day. Following is a list of birds I have seen here last week and this week. MeadowlarksWikispecies-logo.svgCommons-logo.svg Sturnella- abundant and singing in the valley as far west in the mountains as I have been, 4 miles west of LivermoreCommons-logo.svgOpenstreetmap logo.svg Livermore, Colorado. RobinsWikispecies-logo.svgCommons-logo.svg Turdus migratorius- Common in valley in flocks. Have not noticed them closely, but this morning noticed one M. migratoriusWikispecies-logo.svgCommons-logo.svg Turdus migratorius migratorius with flock of M. m. propinqusWikispecies-logo.svgCommons-logo.svg Turdus migratorius propinquus. Mt. BluebirdWikispecies-logo.svgCommons-logo.svg Sialia currucoides- Saw a large flock at Ingleside and another (yesterday) in the valley.
Sparrow HawkWikispecies-logo.svgCommons-logo.svg Accipiter- abundant
Marsh HawkWikispecies-logo.svgCommons-logo.svg Circus cyaneus- have seen a number, always singly
Red Winged BlackbirdWikispecies-logo.svgCommons-logo.svg Agelaius phoeniceus – quite common, have seen no large flocks yet.
Brewer blackbirdWikispecies-logo.svgCommons-logo.svg Euphagus cyanocephalus- a few
Vesper sparrowWikispecies-logo.svgCommons-logo.svg Pooecetes gramineus- a few
Shore larksWikispecies-logo.svgCommons-logo.svg Eremophila alpestris- common, especially in the mountains (foothills).
Gulls- probably ring billedWikispecies-logo.svgCommons-logo.svg Larus delawarensis – numbers on Rocky Ridge ReservoirCommons-logo.svgOpenstreetmap logo.svg Rocky Ridge Reservoir
Ducks- same as gulls
Great Blue HeronWikispecies-logo.svgCommons-logo.svg Ardea herodias-one
House finchesWikispecies-logo.svgCommons-logo.svg Carpodacus mexicanus- singing in town
English sparrowWikispecies-logo.svgCommons-logo.svg Passer domesticus- in town
KilldeerWikispecies-logo.svgCommons-logo.svg Charadrius vociferus- common
Mourning DoveWikispecies-logo.svgCommons-logo.svg Zenaida macroura- not common.
Yesterday and today there was frost in the morning. Yesterday it was cool riding all day. Today it was quite hot. Both days were bright.

Loveland, Colo.Commons-logo.svgOpenstreetmap logo.svg Loveland, Colorado Oct 11, 1907Wikipedia-logo-v2.svg October 11, 1907

Left Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado at 8 p.m. and reached LovelandCommons-logo.svgOpenstreetmap logo.svg Loveland,Colorado at 8:30, put up at Bushnell HotelCommons-logo.svgOpenstreetmap logo.svg Bushnell Hotel. Got team at ---- ((left blank)) stable and drove up Big ThompsonCommons-logo.svgOpenstreetmap logo.svg Big Thompson Creek, Colorado thence up Buckhorn CreekCommons-logo.svgOpenstreetmap logo.svg Buckthorn Creek, Colorado to plot the Arkins fold. West limb of anticline, “Dakota” sandstone and Niobrara dips SW 70˚ to 75˚. W limb of syncline much more gentle as also E limb of anticline. The Dakota forms a high narrow dyke of the hard sandstone. The Fountain is in escarpment. The valley west of granite intrusion is covered, mostly. The upper Lyons is hard, light colored, exactly as in the quarries NW of Colorado SanatoriumCommons-logo.svgOpenstreetmap logo.svg Colorado Sanatorium at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado. I have not made copious notes on the Arkins anticline and syncline, because they are normal en echelon folds and the map gives about all the data. At the northern end of the syncline however, east, northeast and northwest of MasonvilleCommons-logo.svgOpenstreetmap logo.svg Masonville, Colorado, a peculiar condition exists. East of MasonvilleCommons-logo.svgOpenstreetmap logo.svg Masonville, Colorado is a fold (anticline) in the Lyons and Fountain which is cut of entirely from the strata east and west. A cross section from MasonvilleCommons-logo.svgOpenstreetmap logo.svg Masonville, Colorado east through Redstone CanyonCommons-logo.svgOpenstreetmap logo.svg Redstone Canyon, Colorado and on to the plains is as follows: ((drawing in field book, W to left)). At MasonvilleCommons-logo.svgOpenstreetmap logo.svg Masonville, Colorado the Dakota, Lykins and Lyons butt squarely into mica schist and play out. The Dakota does not appear to be dragged up, nor does the Jura, but the Lykins is dragged up sharply thus: ((drawing in field book)). The two schist mountains shown on the map tower far above the sedimentaries flanking them. The dip of cleavage planes is very steep, dipping west, with a strike a little W of N, approximately the same as the sedimentaries to the west, and so pronounced as to make the mountain in places look as if composed of stratified rocks. The western formations are a normal monocline. The anticline east of MasonvilleCommons-logo.svgOpenstreetmap logo.svg Masonville, Colorado seems to have overturned and developed into a thrust fault which has carried it up over the Dakota, and all the formations above the Lyons have been planed off. It seems likely that these formations formerly extended over the high mountain and joined the corresponding strata to the east in the present monocline, or rather that the strata were continuous in a more nearly level position before the development of the fold. Reached hotel at 6:15 very tired, having done a large amount of rapid climbing on foot and driven over 32 miles. Had a fine team, though skittish and headstrong. Following birds were overlooked in Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado list made yesterday. CrowsWikispecies-logo.svgCommons-logo.svg Corvus- saw some several times in the valley and 29 in one flock in the foothills. Long crested jayWikispecies-logo.svgCommons-logo.svg Cyanocitta stelleri- abundant in foothills MagpieWikispecies-logo.svgCommons-logo.svg Magpie- common in valley and foothills TowheesWikispecies-logo.svgCommons-logo.svg Towhees- spurred or arctic, do not know which, abundant along foothills in brushy places A large hawk- probably Swainson’sWikispecies-logo.svgCommons-logo.svg Buteo swainsonii or red tailed (western)Wikispecies-logo.svgCommons-logo.svg Buteo jamaicensis FlickerWikispecies-logo.svgCommons-logo.svg Colaptes- common

Loveland Colo.Commons-logo.svgOpenstreetmap logo.svg Loveland, Colorado, Oct 12/07Wikipedia-logo-v2.svg October 12, 1907

Started with team and driver at 8:15 a.m., west on road that leads from south part of town west to foothills. At S end of anticline the lower Niobrara forms a beautiful semi circular ridge like a broad railroad grade. Basal limestone on E limb of fold dips E by SE 25˚, on W limb W by S 40 degrees. Upper shales of W limb 80˚ and overturning for upper foot by creek. Benton shales here steeper than basal Niobrara. Near LovelandCommons-logo.svgOpenstreetmap logo.svg Loveland, Colorado settling Plant (S of it) is an anticline in the Lyons and Fountain. In the center I found an outcrop thus: ((drawing in field book; caption= flat at base)). The western escarpment here is crowned by the Lykins, the Lyons forming a bench on the west slope of escarpment, the Fountain beneath it and sharply differentiated as at Spring GulchCommons-logo.svgOpenstreetmap logo.svg Spring Gulch, Colorado. The Fountain also extends up the slope of the mountain. The latter consists of mica shist, as described at MasonvilleCommons-logo.svgOpenstreetmap logo.svg Masonville, Colorado yesterday, the Fountain resting upon it thus: ((drawing in field book)). There is a fine exposure west of LovelandCommons-logo.svgOpenstreetmap logo.svg Loveland, Colorado Filter Bed and Dam. Lyons is quite thin, Fountain thick and much as at Left Hand, 150 ft. (estimated) west of drainage line upturned 15˚ on granite (shist) and about the same amount below to Lyons in escarpment. The lower half – that west of the medial line of the valley – is not at all calcareous, but some horizons in the upper half are slightly , others highly, calcareous, almost limestone. Reached hotel at 6:30 after a hard days work . Mapped a number of folds, including those around LovelandCommons-logo.svgOpenstreetmap logo.svg Loveland, Coloradofilter bed and two S of Dry CreekCommons-logo.svgOpenstreetmap logo.svg Dry Creek, Colorado.

Berthoud, Colo.Commons-logo.svgOpenstreetmap logo.svg Bertoud, Colorado Oct 15, 1907Wikipedia-logo-v2.svg October 15, 1907

Left BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado at 5:50 p.m., 35 minutes late, reached BerthoudCommons-logo.svgOpenstreetmap logo.svg Bertoud, Colorado at 6:50, 25 minutes late. Rode to LongmontCommons-logo.svgOpenstreetmap logo.svg Longmont, Colorado in seat with F. M. Downer. Got supper at hotel and arranged at livery stable for team for tomorrow, being unable to get saddle horse. Stopped at Grand View Hotel, W. M. Brady, proprietor.

BerthoudCommons-logo.svgOpenstreetmap logo.svg Bertoud, Colorado Oct 16, 1907Wikipedia-logo-v2.svg October 16, 1907

Started with team at 7:30 a.m. West of Stever ReservoirCommons-logo.svgOpenstreetmap logo.svg Stever Reservoir found Tepee ButtesCommons-logo.svgOpenstreetmap logo.svg Tepee Buttes with Baculites compressusWikispecies-logo.svgCommons-logo.svg Baculites compressus, Ostrea inornataWikispecies-logo.svgCommons-logo.svg Ostrea inornata and Lucina occidentalisWikispecies-logo.svgCommons-logo.svg Lucina occidentalis in quantities but in poor condition. There were many fossil fragments. Did not stop to collect any. Found also Inoceramus barabiniWikispecies-logo.svgCommons-logo.svg Inoceramus barabini, fragments of a large HeterocerasWikispecies-logo.svgCommons-logo.svg Heteroceras and probably a medium sized PtychocerasWikispecies-logo.svgCommons-logo.svg Ptychoceras. 150 yards W of the buttes The Hygiene sandstone is found dipping east about 15˚, not at all calcareous. To the west the basal Pierre shales and Niobrara dip E 42˚, the Benton shales are somewhat crushed and the boulder mesa cap over the Benton is well consolidated. Just within the canyon the Dakota is badly tangled. A section of the medial shales is thus: ((drawing in field book)). A big fold in addition to several small ones spreads the “Dakota” over much territory here. The strong capping limestone of the Morrison can be followed around the north end of the syncline via Carter LakeCommons-logo.svgOpenstreetmap logo.svg Carter Lake, Colorado. The west limb of the anticline, as usual, is steeper than the east limb, from 55 to 80 degrees. The pink krinkled sandstone with limestone bands can be traced around the main syncline in the Lykins at head of Carter LakeCommons-logo.svgOpenstreetmap logo.svg Carter Lake, Colorado. It is much as at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado. The medial gray sandstone of the Lykins is very hard and resembles the Lyons sandstone of the quarries NW of Colorado Sanitarium at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado. (query, is the latter Lyons?) In the underlying red sandstones of the Lykins at one place just west of the head of Carter LakeCommons-logo.svgOpenstreetmap logo.svg Carter Lake, Colorado I found numerous casts of fossil bivalvesWikispecies-logo.svgCommons-logo.svg bivalves, but unrecognizable in a coarse sandstone. ((the following parenthetical statement added later by JH “(these are casts of concretions)”)). The Fountain extends well across the west valley at Chimney HollowCommons-logo.svgOpenstreetmap logo.svg Chimney Hollow. Carter LakeCommons-logo.svgOpenstreetmap logo.svg Carter Lake, Colorado has no outlet now. It may be due either to deformation or an outwash dame of debris, probably the former. Old terraces indicate that the water once rose some feet higher and that at one time there was an outlet at the S end. The S barrier is not now very high. In afternoon I collected fossils in the Benton. Found Inoceramus cf. I. labiatusWikispecies-logo.svgCommons-logo.svg Inoceramus labiatus just below middle of formation, with undetermined cephalopodsWikispecies-logo.svgCommons-logo.svg cephalopods and an undescribed oysterWikispecies-logo.svgCommons-logo.svg oyster found near BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado and west of Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado. In two or three thin limestones in the upper half of the formation I found the usual abundance of I. labiatusWikispecies-logo.svgCommons-logo.svg Inoceramus labiatus and a few cephalopodsWikispecies-logo.svgCommons-logo.svg cephalopods. Reached hotel at 5:30. It has been very warm in the sun today.

BerthoudCommons-logo.svgOpenstreetmap logo.svg Bertoud, Colorado, Oct 17, 1907Wikipedia-logo-v2.svg October 17, 1907

Started with sorrel team at 7:30. Drove W and then S. Just before reaching Little ThompsonCommons-logo.svgOpenstreetmap logo.svg Little Thompson Creek, Colorado on road next to foothills found a sandstone E of typical Hygiene. It was soft and fine grained below with a with a two foot hard and coarse stratum of darker color than the other. On E side RabbitCommons-logo.svgOpenstreetmap logo.svg Rabbit Creek, Colorado we have an unusual case of an anticline with E limb much steeper than west limb. Killed a rattlesnakeWikispecies-logo.svgCommons-logo.svg rattlesnake on Dakota Ridge W of Lykins ranchCommons-logo.svgOpenstreetmap logo.svg Lykins Ranch. Struck an outcrop SW of town and E of the Hygiene (1 ½ or 2 mi.) which looks much like concretions of Fossil Creek sandstone, but decidedly lime concretions. Contained a few Inoceramus sagensisWikispecies-logo.svgCommons-logo.svg Inoceramus sagensis and probably I. barabiniWikispecies-logo.svgCommons-logo.svg Inoceramus barabini. Collected Vallonia cyclophorellaWikispecies-logo.svgCommons-logo.svg Vallonia cyclophorella, Oreohelix strigosaWikispecies-logo.svgCommons-logo.svg Oreohelix strigosa, Zonitoides arboreusWikispecies-logo.svgCommons-logo.svg Zonitoides arboreus and Pupilla sp.Wikispecies-logo.svgCommons-logo.svg Pupilla where little ThompsonCommons-logo.svgOpenstreetmap logo.svg Little Thompson Creek, Colorado breaks through the “Dakota” ridge. Went south nearly to St. VrainCommons-logo.svgOpenstreetmap logo.svg St. Vrain Creek, Colorado. Reached Hotel at 5:30. Cloudy, with raw wind early forenoon, warm and bright afternoon.

Berthoud, Oct 18, 1907

Started at 8:30 driving west and north. Hazy over the mountains and a cold northerly breeze blowing, changing later to easterly. North of Lone Tree Lake I found a strong outcrop of typical Hygiene sandstone dipping SE, 15˚, continuing NE to SW corner of Loveland. Its strike continued SE would about meet the outcrop west of Berthoud. No fossils. Returned to the hotel for dinner at noon, and packed the fossils from W and SW for shipment. In the afternoon started north at 2 p.m., then east to E line of Loveland Quadrangle around twin MoundsCommons-logo.svgOpenstreetmap logo.svg Twin Mounds, thence S of Little ThompsonCommons-logo.svgOpenstreetmap logo.svg Little Thompson Creek, Colorado , where I found Fox Hills strata containing Cardium speciosumWikispecies-logo.svgCommons-logo.svg Cardium speciosum etc. E of road and S of creek. Reached hotel at 5 p.m. Took 6:25 train for LovelandCommons-logo.svgOpenstreetmap logo.svg Loveland, Colorado arriving practically on time and after engaging the little black team I used last week I went to the Bushnell HotelCommons-logo.svgOpenstreetmap logo.svg Bushnell Hotel. Nearly in collision with runaway car as we pulled into LovelandCommons-logo.svgOpenstreetmap logo.svg Loveland, Colorado.

LovelandCommons-logo.svgOpenstreetmap logo.svg Loveland, Colorado, Oct 19, 1907Wikipedia-logo-v2.svg October 19, 1907

Started by team at 7 a.m. Drove up above MasonvilleCommons-logo.svgOpenstreetmap logo.svg Masonville, Colorado and traced out sedimentaries to where they ended. In the schist E of the fault plane there has been some prospecting. Then crossed into Redstone CanyonCommons-logo.svgOpenstreetmap logo.svg Redstone Canyon, Colorado and traced the Fountain, Lyons and Lykins up about 3 ½ miles to where they ended. Fed the horses here at just noon. Reached the hotel at 3:15 p.m. having driven about 45 miles with a fine team. Reached BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado at 5:55 p.m.

BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, Oct. 22, 1907Wikipedia-logo-v2.svg October 22, 1907

Left BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Coloradoat 9:45 a.m., 25 minutes late, reached LovelandCommons-logo.svgOpenstreetmap logo.svg Loveland, Colorado at11 a.m. with G. S. Dodds. He went on to Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado by train while I got off and started north on foot with the idea of meeting Dodds at Fossil Creek with horse and buggy. At intake S end of Loveland LakeCommons-logo.svgOpenstreetmap logo.svg Loveland Lake, Colorado I found Hygiene sandstone with usual characters including some greenish yellow strata, dipping east, 8˚, one stratum containing numerous Inoceramus barabiniWikispecies-logo.svgCommons-logo.svg Inoceramus barabini, I. oblongusWikispecies-logo.svgCommons-logo.svg Inoceramus oblongus and Anomia rectiformisWikispecies-logo.svgCommons-logo.svg Anomia rectiformis, all poorly preserved. I have now no doubt of its identity with the Fossil Ridge sandstone . Passing thence around the east side of the lake the Inoceramus oblongusWikispecies-logo.svgCommons-logo.svg Inoceramus oblongus increased rapidly in numbers and I found several Scaphites nodosusWikispecies-logo.svgCommons-logo.svg Scaphites nodosus. Found no outcrop at extreme north end of lake . Thick sheet of clay exposed. In bottom of outlet ditch there appears to be a soft sandstone, probably the same one as at the south end. Along east side sandstone is unmistakably the Fossil Ridge formation. The fossils at Fossil Ridge are mostly in upper part (eastern part of exposure) as here. Passed northward then along RR track. Saw occasional evidence of the sandstone on both sides of the track and believe the ridge east of track all the way is composed of it as at Fossil Ridge. Reached Trilby Schoolhouse roadCommons-logo.svgOpenstreetmap logo.svg Trilby Schoolhouse Road road at 4:45 and found Dodds with horse and buggy. We reached Hotel NorthernCommons-logo.svgOpenstreetmap logo.svg Hotel Northern at Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado at 6 p.m. There seems now no possible doubt about the Fossil Ridge sandstone being continuous with the Hygiene.

Ft. Collins, Colo.Commons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado, Oct 23, 1907Wikipedia-logo-v2.svg October 23, 1907

Started S at 8 a.m., collected fossils where Fossil CreekCommons-logo.svgOpenstreetmap logo.svg Fossil Creek, Colorado breaks through the ridge and crosses the road, then drove S to Trilby schoolhouseCommons-logo.svgOpenstreetmap logo.svg Trilby Schoolhouse and turned east visiting the sandstone outcrop 1 ½ miles east. It dip E 8˚ and is indistinguishable from the Fossil Ridge sandstone, but contains no fossils except a few Inoceramus cf. barabiniWikispecies-logo.svgCommons-logo.svg Inoceramus barabini. (see below). Probably represents upper member of Hygiene sandstone as found further south, but much further from the lower member. Upon further search found quite a number of fossils, all of which were I. oblongusWikispecies-logo.svgCommons-logo.svg Inoceramus oblongus, but small specimens, and Dodds found Halymenites majorWikispecies-logo.svgCommons-logo.svg Halymenites major. The concretions are just as at Fossil RidgeCommons-logo.svgOpenstreetmap logo.svg Fossil Ridge. It is possible that it is a fold. N of Trilby schoolhouseCommons-logo.svgOpenstreetmap logo.svg Trilby schoolhouse we found a good exposure just S of Brickyard and E of RR track. At base there is a transition zone from shale to sandstone . Above this are about 40 feet of rather soft, irregularly bedded sandstone, then a covered zone of a few feet, above which is he hard, massive, concretionary, fossiliferous sandstone about 50 feet, the whole dipping easterly 9˚. Reached Hotel at 6 p.m. I have been ill all afternoon having sever intestinal pains. Got a shave and haircut in evening and at 8 p.m. Chas. A Lory called on us.

Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado, Oct 24, 1907Wikipedia-logo-v2.svg October 24, 1907

Started N with team at 8 a.m. On W side of reservoir system, Rocky Ridge Reservoir No. 1Commons-logo.svgOpenstreetmap logo.svg Rocky Ridge Reservoir No. 1, found a greenish, coarse, friable, impure sandstone, irregularly bedding, dipping E 12˚ and in passing N changing to NE 20˚, thus passing under the typical Fossil Ridge sandstone E of the reservoir. Proceeding E along the ditch bank half way to the Fossil Ridge sandstone, found impure sandy shale all the way dipping NE 18˚ to 20˚. Going W and N around head of Douglas Reservoir No. 10Commons-logo.svgOpenstreetmap logo.svg Douglas Reservoir No. 10 is a typical massive sandstone with a tendency toward greenish gray color, containing hard and darker concretions just as at Fossil Ridge. Fossil less numerous than further south and consist only of Halymenites majorWikispecies-logo.svgCommons-logo.svg Halymenites major, Inoceramus barabiniWikispecies-logo.svgCommons-logo.svg Inoceramus barabini, Callista deweyiWikispecies-logo.svgCommons-logo.svg Callista deweyi, Anomia rectiformisWikispecies-logo.svgCommons-logo.svg Anomia rectiformis, and Cardium speciosumWikispecies-logo.svgCommons-logo.svg Cardium speciosum. Collected a few fossils at Rocky Ridge Reservoir No----Commons-logo.svgOpenstreetmap logo.svg Rocky Ridge Reservoir No---- and reached livery bar at 4 :15. It was cloudy at daylight, but not cold. Temperature fell during the day. At noon it began to sprinkle and at 4 p.m. developed into light rain. Prepared a box of fossils for shipment before supper. Still drizzling at bedtime.

Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado, Oct. 25, 1907Wikipedia-logo-v2.svg October 25, 1907

Still gloomy, damp and muddy, but not raining this morning. Spent the forenoon at hotel waiting to see what the weather would do to us. Started to WindsorCommons-logo.svgOpenstreetmap logo.svg Windsor, Colorado by train at 11:40, late as usual. Went to American HotelCommons-logo.svgOpenstreetmap logo.svg American Hotel and had dinner, then started for bluffs on S side Cache a la PoudreCommons-logo.svgOpenstreetmap logo.svg Cache la Poudre River, Colorado SE of WindsorCommons-logo.svgOpenstreetmap logo.svg Windsor, Colorado. 3 mi. S and 1 ½ E found bluffs about the same as at our 1906 camp 2 miles further east. Massive greenish, yellowish sandstones above, quite friable, with hard dark colored stratified concretions and concretionary zones, and darker colored shales below. Found MactraWikispecies-logo.svgCommons-logo.svg Mactra and numerous gastropodsWikispecies-logo.svgCommons-logo.svg gastropods above and Veniella humilisWikispecies-logo.svgCommons-logo.svg Veniella humilis and other fossils below as at the other camp, strata practically horizontal. There is an exposure of several hundred feet of strata in the bluffs and crowning slopes. It nearly cleared during afternoon and became much colder. Reached hotel at 5:30. have had trouble with left eye all day- catarrhal conjunctivitis. The zinc solution I carry appears to have decomposed, so I cannot use it. I got some boric acid and hope that will do the work.

Windsor, Colo.Commons-logo.svgOpenstreetmap logo.svg Windsor, Colorado, Oct. 26, 1907Wikipedia-logo-v2.svg October 26, 1907

A cold frosty morning. My eye is somewhat better but by no means well. Quite warm soon after reaching the bluffs where we worked yesterday. The base of the bluffs at water’s edge and for some distance (perhaps 50 ft. or more)is of black shales much like the Pierre at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado. Saw no fossils in it. Above it passes gradually into yellow sandy shales and sandstones (very friable). In the black shales 25 ft below the yellow we found Veniella humilisWikispecies-logo.svgCommons-logo.svg Veniella humilis but none above. In the yellow sandstone found Nucula sp.Wikispecies-logo.svgCommons-logo.svg Nucula, but not in the black shale except at the very top. Cardium speciosumWikispecies-logo.svgCommons-logo.svg Cardium speciosum, MactraWikispecies-logo.svgCommons-logo.svg Mactra and TellinaWikispecies-logo.svgCommons-logo.svg Tellina common to both horizons. Have not seen what Dodds has. Started up stream at 11 a.m. After lunching and feeding the horse we drove to a gulch 2 miles SW of WindsorCommons-logo.svgOpenstreetmap logo.svg Windsor, Colorado. The gulch has cut deeply into the Pierre shales with some narrow sandstone bands. Found but 2 determinable fossils, one ((Ostrea inornataWikispecies-logo.svgCommons-logo.svg Ostrea inornata written in, then crossed out)) and another which I do not recognize but which I also found in the upper Pierre shales at the first station this morning. Then we drove S and W around the long gulch, reaching a point about 6 miles SW of WindsorCommons-logo.svgOpenstreetmap logo.svg Windsor, Colorado, and crossed the Cache la PoudreCommons-logo.svgOpenstreetmap logo.svg Cache la Poudre River, Colorado 3 miles W and ¼ mile N of WindsorCommons-logo.svgOpenstreetmap logo.svg Windsor, Colorado, crossing Fossil CreekCommons-logo.svgOpenstreetmap logo.svg Fossil Creek, Colorado just before crossing the river. On the bluffs just before reaching Fossil CreekCommons-logo.svgOpenstreetmap logo.svg Fossil Creek, Colorado we crossed what appears to be the yellowish concretionary Fox Hills sandstone as found SE of WindsorCommons-logo.svgOpenstreetmap logo.svg Windsor, Colorado, but it was dipping sharply toward the E or NE, from which we must infer a fold. The Cache la PoudreCommons-logo.svgOpenstreetmap logo.svg Cache la Poudre River, Colorado SE of WindsorCommons-logo.svgOpenstreetmap logo.svg Windsor, Colorado looks and smells like a sewer, in spite of its volume, but it is clear west of town. It is probably the waste drain from the sugar factory. Reached WindsorCommons-logo.svgOpenstreetmap logo.svg Windsor, Colorado at 4 p.m., packed our material and shipped it. Dodds left on 5:30 train for Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado and I took the 8:00 o’clock train for GreeleyCommons-logo.svgOpenstreetmap logo.svg Greeley, Colorado, where J. L. Bartlett met me at the depot. Nellie had gone up from BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado on the morning train.



GreeleyCommons-logo.svgOpenstreetmap logo.svg Greeley, Colorado, Oct 27, 1907Wikipedia-logo-v2.svg October 27, 1907

J. L. Bartlett and I drove around town for a while, then met Grace and Nellie at the sugar factory and were shown through the plant by the assistant superintendent. Dined at the Canfield HotelCommons-logo.svgOpenstreetmap logo.svg Canfield Hotel and I took the 1 p.m. train for BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado leaving Nellie to come down tomorrow. It has been a beautiful day.

Berthoud, Colo.Commons-logo.svgOpenstreetmap logo.svg Bertoud, Colorado, May 28, 1908Wikipedia-logo-v2.svg May 28, 1908

Cloudy and cool. Left BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado for BerthoudCommons-logo.svgOpenstreetmap logo.svg Bertoud, Colorado on 9:28 train, for Colorado Geological SurveyCommons-logo.svgOpenstreetmap logo.svg Colorado Geological Survey, about on time, reached BerthoudCommons-logo.svgOpenstreetmap logo.svg Bertoud, Colorado at 10:30, went to hotel, then to livery stable and ordered team. Had dinner at 11:45. Started west at 12:30. I about the middle of the medial “Dakota” shales we found Inoceramus cf. labiatusWikispecies-logo.svgCommons-logo.svg Inoceramus labiatus and Avicula linguiformisWikispecies-logo.svgCommons-logo.svg Avicula linguiformis as at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, with other spp. and many plant stems. In west limb of W syncline basal Dakota sandstone is very massive and hard, and Morrison consists mostly of hard limestones and calcareous sandstones below, upper part covered. Found no fossils. The Dakota consists of friable sandstones at top, underlaid first

1908 Trips[edit]

by sandy shales, then black shales, with very hard, massive sandstones and conglomerates below. Found no conglomerate in the easternmost ridge of the basal sandstone which would represent the off shore deposit. Reached hotel at 6:05 p.m. Retired early, very tired. Cloudy all day, sprinkling more or less.

BerthoudCommons-logo.svgOpenstreetmap logo.svg Bertoud, Colorado, May 29, 1908Wikipedia-logo-v2.svg May 29, 1908

Arose at 6 a.m. A bright morning. Yesterday we saw 2 mallard ducks at mouth of gulch. On a lake we saw a blue heronWikispecies-logo.svgCommons-logo.svg Ardea herodias and some black terns?Wikispecies-logo.svgCommons-logo.svg Chlidonias niger. OriolesWikispecies-logo.svgCommons-logo.svg Icterus bullockii are more common in the villages like BerthoudCommons-logo.svgOpenstreetmap logo.svg Bertoud, Colorado than at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado. Lark sparrowsWikispecies-logo.svgCommons-logo.svg Chondestes grammacus abundant in foothills, vesper sparrowsWikispecies-logo.svgCommons-logo.svg Pooecetes gramineus not so abundant. Started for gulch west of town at 7:15. First visited the fine anticline. Fountain there contains very little limestone and none in upper part. Well up west slope of anticlinal valley found massive conglomerate , overlaid by 10 ft. of thin bedded red sandstone, then a bed of conglomerate, then sandstone to top. Probably the highest conglomerate may be considered top of Fountain. No unconformity. On the west slope of the W limb very hard Lyons occurs. Whole thing much metamorphosed, including limestone well down in the Fountain. The limestone associated with the “crinkled” sandstone in the Lykins is just as at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, non-fossiliferous. Has been burned for lime around Carter lakeCommons-logo.svgOpenstreetmap logo.svg Carter Lake, Colorado. Some distance beneath it on the W limb of the syncline is a hard sandstone just like the Lyons underlaid by typical Lykins micaceous shaley sandstone, some of it very hard and containing flat iron concretions which dissolve out, leaving casts which resemble casts of rather flat pelecypods. In one place this extends nearly to crest of the Lyons escarpment. Fountain west of Lyons escarpment practically same as in the anticline first visited. Collected a number of cephalopodsWikispecies-logo.svgCommons-logo.svg cephalopods , including two large ones, in the Benton on way back. Reached hotel at 5 p.m., very tired, back aching. Clear and quite warm out of the wind. Mt. MahoganyCommons-logo.svgOpenstreetmap logo.svg Mt. Mahogany does not constitute a compact formation on the sandstone slopes ending abruptly at the grass line below as it does at Box ElderCommons-logo.svgOpenstreetmap logo.svg Boxelder Creek, Colorado. It is more scattered.

Berthoud, Colo.Commons-logo.svgOpenstreetmap logo.svg Berthoud, Colorado, May 30, 1908Wikipedia-logo-v2.svg May 30, 1908

Drove west from BerthoudCommons-logo.svgOpenstreetmap logo.svg Berthoud, Colorado and 2 miles north, then into gulch where we found the Dakota ridges widely separated and the Morrison limestones occupying the crest of the ridge and the west face, while between it and the lower Dakota conglomerate were drab and greenish clays, quite hard. Dakota conglomerate coarse. Medial Dakota clays covered. “Dakota” is 30 ft or more sandstone on top, then 50 ft sandy shale below, then 50 ft black clay shale, then 60 ft hard sandstone and conglomerate with a tendency to form two ridges. Near base of upper sandy shale are calcareous bands containing some oyster and Inoceramus as at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado, with fishWikispecies-logo.svgCommons-logo.svg fish vertebra. S side of gulch3 or 4 miles north of where we entered foothills a ditch tunnel exposes Dakota- Morrison contact where a massive, light colored iron stained sandstone rests conformably upon sandy shales, variegated, yellow, greenish gray and maroon. Lower are greenish shales, underlaid by limestones. Here, as further south, the limestones form highest crest of first hogback series. Dip E 25˚. Same ditch reemerges from tunnel in a black shale sandy band which is probably the cause of the tendency of basal Dakota to separate into two benches. No conglomerate here. Shale about 20 ft. thick – contains lots of vegetable fragments carbonized. On S side big ditch it cuts through entire Dakota, making a fine exposure. Low in the shales, below middle, find the same fossils as further south. Due E is a fine fold in Niobrara. Reached BerthoudCommons-logo.svgOpenstreetmap logo.svg Berthoud, Colorado at 1:30 and shipped a big box of fossils. Measured Jurassic section at last canyon visited, as follows, generalized: Upper Dakota sandstone----------------------------- 30

Dakota Shales-----------------------------150

Lower Dakota s.s.--------------------------------25

Jurassic Variegated clays, some parts calcareous (some green fine grained s.s. in talus probably from above stratum)------------------------------------------------------------------30

Hard l.s. with many minute calcite slivers (?)-------------------------------------40

Rather friable light gray s.s (or is it indurated clay)------------------------------31

Compact drab l.s. partly soft---------------------------------------------------------30

Light gray, rather friable s.s. (10 ft. bluff in center)------------------------------58

Lykins ? Light gray hard s.s. --------------------------------------------------------12

Abruptly passing into pink, then into red. The gray is by leaching as shown by the irregularity of the pink line, which does not follow stratification. Left BerthoudCommons-logo.svgOpenstreetmap logo.svg Berthoud, Colorado on the 3:56 p.m. train reaching BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado at 4:00 p.m. (sic). Met Prof. George at depot, starting east to be married.

BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, June 3, 1908Wikipedia-logo-v2.svg June 3, 1908

Instead of attending commencement and taking my B. A. degree I started north on foot, up the Lykins lateral valley NW of Colorado SanitariumCommons-logo.svgOpenstreetmap logo.svg Colorado Sanitarium. There the Lykins extends up well on the flanks of the Lyons, with Fountain at top of second hogback. Morrison sandstones, limestones and clays (latter partly calcareous) pretty well exposed. In middle of Dakota shales 2 miles N found a stratum filled with plant fragments and a few poorly preserved fish scales and vertebra. Here medial sandy shales are 90 ft. thick between the well defined walls, dip E 80˚. In Two MileCommons-logo.svgOpenstreetmap logo.svg Twomile Creek, Colorado the crinkled sandstone and accompanying limestone are within 135 feet of the Lyons. Lyons is about 100 ft thick. Top of Fountain contains alternating sandstones and conglomerates same as true all the way down, the conglomerates predominating. Lenses of fine grained sandstone occur in coarse conglomerates, thus ((drawing in field book)). Fountain very thick here. Creek bed affords most nearly complete exposure of entire Fountain section I have seen. At or near base found a few chert nodules similar to those at Box ElderCommons-logo.svgOpenstreetmap logo.svg Boxelder Creek, Colorado, but no fossils in them. Found none elsewhere in the formation.

At 4-MileCommons-logo.svgOpenstreetmap logo.svg Four Mile, Colorado crinkled sandstone is 250 feet above Lyons with good exposure and no indication of light colored ridge making sandstone found in lower Lykins from St. VrainCommons-logo.svgOpenstreetmap logo.svg St. Vrain Creek, Colorado northward. Reached home at 5:30 p.m., very tired. An almost cloudless day, which would have been very hot were it not for a brisk, cool breeze which made itself manifest except in well sheltered places.

Boulder, Colo.Commons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, June 4, 1908Wikipedia-logo-v2.svg June 4, 1908

Bright morning with quite a cool breeze. Started north via Red HillCommons-logo.svgOpenstreetmap logo.svg Red Hill, Colorado road at 8:50 a.m., horseback. At 4-MileCommons-logo.svgOpenstreetmap logo.svg Four Mile, Colorado and northwardLyons has a tendency to separate into two or more ridges, but with no intervening Lykins. Just north of Left HandCommons-logo.svgOpenstreetmap logo.svg Left Hand Creek, Colorado a porphyry dyke occurs in the lower Lykins, 50 ft. or more below the Crinkled sandstone, its lower limit is near the Lykind-Lyons contact. Estimated its thickness at 200 feet. The Crinkled forms a low ridge from here to the St. VrainCommons-logo.svgOpenstreetmap logo.svg St. Vrain Creek, Colorado. In Lykins gulchCommons-logo.svgOpenstreetmap logo.svg Lykins Gulch, Longmont, Colorado is an almost complete exposure of Lykins and Morrison. Here there are about 50 or 60 feet of deep red sandy shales below the Crinkled and 300 or 400 feet of same above. The Lyons is widely spread here. Reached home at 6 p.m.

Boulder, Colo.Commons-logo.svgOpenstreetmap logo.svg Boulder,Colorado 1908-06-05 Wikipedia-logo-v2.svg June 5, 1908June 5, 1908

Started south over Chatauqua mesaCommons-logo.svgOpenstreetmap logo.svg Chataqua Mesa, Colorado on foot. Lyons here flanks the Fountain with tendency to form a low ridge. Collected Quaternary fossils in Bear CanyonCommons-logo.svgOpenstreetmap logo.svg Bear Canyon, Colorado. On S side of canyon found upper Morrison shales well exposed. “Dakota” basal sandstone here about 75 ft thick, medial shales 50 ft. and upper sandstone with intercalated clay bands 60 ft. No fossils. Shales look as at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Canyon, Colorado, lower part covered. No conglomerate at base of the “Dakota”. Went S nearly to S. Boulder CreekCommons-logo.svgOpenstreetmap logo.svg South Boulder Creek, Colorado, but found no exposures of anything later than Fountain except a little Lyons on flanks of FlatironsCommons-logo.svgOpenstreetmap logo.svg Green Mountain, Colorado of S. Boulder CreekCommons-logo.svgOpenstreetmap logo.svg South Boulder Creek, Colorado, and Dakota where gulches expose it. Mesa debris almost tops the Dakota ridge on divides between E-W gulches. On return found 150 ft. of Hygiene sandstone exposed on east side of isolated hill in mouth of Bear CanyonCommons-logo.svgOpenstreetmap logo.svg Bear Canyon, Colorado, dip practically vertical, strike N 33˚ W, containing Inoceramus spp.Wikispecies-logo.svgCommons-logo.svg Inoceramus and Baculites compressusWikispecies-logo.svgCommons-logo.svg Baculites compressus.

Boulder, Colo.Commons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, June 20, 1908Wikipedia-logo-v2.svg June 20, 1908

Dodds and I started on horseback for Coal CreekCommons-logo.svgOpenstreetmap logo.svg Coal Creek, Colorado at 8 a.m. A very hot day. Where the road running S from MarshallCommons-logo.svgOpenstreetmap logo.svg Marshall, Colorado strikes Coal CreekCommons-logo.svgOpenstreetmap logo.svg Coal Creek, Colorado the Laramie sandstone and some shales are well exposed with dip E of 38˚ and strike N 6˚ W. Rocky Flat, between S. BoulderCommons-logo.svgOpenstreetmap logo.svg South Boulder, Colorado and Coal CreekCommons-logo.svgOpenstreetmap logo.svg Coal Creek, Colorado has much quartzite in the debris sheet, increasing southward. Coal Creek valley is almost covered with it, forming “windows” in many places, though there is but little on the higher mesas. Following up creek to first ranch house, we then turned west and in old R.R. grade cut at edge of mesa we found Hygiene sandstone with typical fossiliferous concretions, as at Fossil RidgeCommons-logo.svgOpenstreetmap logo.svg Fossil Ridge, Colorado, containing Baculites compressusWikispecies-logo.svgCommons-logo.svg Baculites compressus, Inoceramus vanuxemiWikispecies-logo.svgCommons-logo.svg Inoceramus vanuxemi, sagensisWikispecies-logo.svgCommons-logo.svg Inoceramus sagensis and oblongusWikispecies-logo.svgCommons-logo.svg Inoceramus oblongus, Heteroceras sp.Wikispecies-logo.svgCommons-logo.svg Heteroceras etc. Then passed up the gulch cutting into the mountains west of there. Found quartzite underlying Fountain, dip of Fountain E 38˚, dip of quartzite SE 39˚. To the west of this is Fountain again, dip E 70˚ and a few rods SW same thing dip W ---˚, possibly fallen down. Dodds reported quartzite again W of this. “Dakota” here with 25 ft of conglomerate at base, then 100 feet covered, then 5o ft. sandstone. Morrison sandstone and shales exposed but saw no limestone.


Boulder, Colo.Commons-logo.svgOpenstreetmap logo.svg Boulder,Colorado, July 22, 1908Wikipedia-logo-v2.svg July 22, 1908

Left BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder,Colorado on interurban car at 6 a.m. for the Perry Park regionCommons-logo.svgOpenstreetmap logo.svg Perry Park, Colorado. Bright warm morning, with a few flying clouds. Reached Oxford Hotel at 8 a.m., had breakfast, then met A Dakan and J. M. Downen (?). Took 9 a.m. D. and R.G. train for LarkspurCommons-logo.svgOpenstreetmap logo.svg Larkspur, Colorado. At mouth of Platte canyonCommons-logo.svgOpenstreetmap logo.svg Platte Canyon, Colorado Cretaceous formations dip E about 70˚ (estimated from distance). Denver beds horizontal capped by lava ((later crossed out)) which has been quarried near SedaliaCommons-logo.svgOpenstreetmap logo.svg Sedalia, Colorado and castle RockCommons-logo.svgOpenstreetmap logo.svg Castle Rock, Colorado on both side of the track. Reached LarkspurCommons-logo.svgOpenstreetmap logo.svg Larkspur,Colorado about 11:15, changed clothes in the quarters of a resident, got dinner at a boarding house. In Stone GulchCommons-logo.svgOpenstreetmap logo.svg Stone Gulch Valley, Colorado, W of LarkspurCommons-logo.svgOpenstreetmap logo.svg Larkspur, Colorado, found conglomerate in contact with friable, strongly feldspathic granite forming an even floor. There are two or more very sharp folds. Then we travelled north to Bear Creek CanyonCommons-logo.svgOpenstreetmap logo.svg Bear Creek Canyon, Colorado, at Col. E. E. Hughes’ country place. There we found lower Carboniferous fossils in a sandstone at about the same horizon as at Box ElderCommons-logo.svgOpenstreetmap logo.svg Boxelder Creek, Colorado, just at top of a red sandstone very dark red at very top and overlaid by a very coarse pure white sandstone or conglomerate. A few feet of shales intervene, the weathering of which has tumbled the white sandstone into blocks tilted in all directions, so that we could not tell whether they were conformable. Reached Dakan ranchCommons-logo.svgOpenstreetmap logo.svg Dakan Ranch, Coloradoat 7:15.

Perry ParkCommons-logo.svgOpenstreetmap logo.svg Perry Park, Colorado, July 23, 1908Wikipedia-logo-v2.svg July 23, 1908

Up at 5 a.m., shaved, had breakfast at 6 a.m. Started for Manitou ParkCommons-logo.svgOpenstreetmap logo.svg Manitou Park, Colorado at 8 a.m. on horseback. Reached Fish RanchCommons-logo.svgOpenstreetmap logo.svg Fish Ranch, Colorado at 2 p.m. About 2 or 3 miles E of ranch found fossils about 350 or 400 ft. above granite in red calcareous sandstone, overlaid by strong brecciated limestone. Base of sedimentary is hard coarse red sandstone with 14 inch band of greensand about 60 ft. above base. The sandstone is more or less calcareous. Reached Akerman’s ranchCommons-logo.svgOpenstreetmap logo.svg Akerman's Ranch at 7 p.m., very tired.


Up at 5:15. Started at 7:30 a.m. In gulch about a mile north of Akerman’s ranchCommons-logo.svgOpenstreetmap logo.svg Akerman's Ranchhouse, at N end of pasture, found small exposure of granite at bottom of gulch. Section as follows from base up. Ft. Granite exposed------------------------------------------------------------------------4

Rather coarse, massive, gray and white sandstone (upper half reddish - greensand about 25 ft above base)------------------------------------------------43

Transition to thin bedded red s.s. calcareous, ----------------- 10

fossiliferous---------------------57

Rather more massive s.s. with fossils--------------------------------------------120 Massive l.s., not bedded , with SpiriferWikispecies-logo.svgCommons-logo.svg Spirifer and ProductusWikispecies-logo.svgCommons-logo.svg Productus-------------------------10

Pink s.s. with chert concretions----------------------------------------------------12

Same as next to last l.s.---------------------------------------------------------------5

Granite surface remarkably even, showing cutting into sea cliff by waves at sea level. Down gulch is a fault. Water has formed stalagmitic deposit locally called a volcano, 50 feet in depth. Granite weathered 15 ft down. Passed over a dim trail down Cow CreekCommons-logo.svgOpenstreetmap logo.svg Cow Creek, Colorado along slopes of 40˚ far above stream bed. Erosion is proceeding with great rapidity. Every little gully has a fine fan at its mouth. Reached Lenny (?) Smith’s sawmillCommons-logo.svgOpenstreetmap logo.svg Smith's Sawmill at 11:30 and had dinner. Rained during dinner Have passed some good timber. At mill there were red spruce logs 2 ½ and 3 ft. in diameter. Where Ridge RoadCommons-logo.svgOpenstreetmap logo.svg Ridge Road reaches plains section is Ft. Lyons exposed, vertical-------------------------------------------------------------------- 15

Lyons, mostly covered, slightly overturned---------------------------------------------- 66

Krinkled s.s., very calcareous, with limestone------------------------------------------ 24

Gypsum, about------------------------------------------------------------------------------ 30

Covered valley------------------------------------------------------------------------------ 300 (in valley is undescribed oysterWikispecies-logo.svgCommons-logo.svg oyster from Benton about 25 ft from gypsum) Niobrara l.s. ridge, about----------------------------------------------------------------- 40

((drawing in field book)) S of road found Dakota in place and reached Dakan ranchCommons-logo.svgOpenstreetmap logo.svg Dakan Ranch at 4 p.m., very tired and spent balance of day resting. Rained again.

Perry Park, Colo.Commons-logo.svgOpenstreetmap logo.svg Perry Park, Colorado, July 25, 1908Wikipedia-logo-v2.svg July 25, 1908 Up at 5 a.m. breakfast at 6 a.m. Another bright, hot morning. Dakan and I worked S from ranch, next to foothills. Formations badly broken, faulted and folded. At Bear Creek canyonCommons-logo.svgOpenstreetmap logo.svg Bear Creek Canyon, Colorado (Col. Hughes Country Pl.) measured a section as follows:

Granite---------- ft. Covered about---------------------------------------------------------------------------------15 Massive light gray s.s., very coarse---------------------------------------------------------29 Massive Red s.s.-------------------------------------------------------------------------------5 Thin bedded l.s., or fine grained calcareous s.s., with chert fossils about------------22 Pure white coarse s.s. with thin red bands to top of bluff. Just below latter we found thin band 1-2 ft very rich red, hard, fine grained clay or sandstone, probably former. The white sandstone appears to be the base of the Fountain, as for several hundred feet above it extend coarse sandstones and conglomerates, overlaid by about 300 ft of Lyons sandstone, varying from white to red and forming a cliff. Gypsum bed strong in Lykins. Dakota forms 2 benches. Fountain dips NE 12 to 15 degrees, Lyons same S of lake, but N and W of lake it is vertical. We estimate Fountain at not to exceed 600 ft. Niobrara same as at BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado, but base broken up and not appearing so massive. Collected Lucina occidentalisWikispecies-logo.svgCommons-logo.svg Lucina occidentalis, Baculites ovatusWikispecies-logo.svgCommons-logo.svg Baculites ovatus, B. compressusWikispecies-logo.svgCommons-logo.svg Baculites compressus, Margarita nebrascensisWikispecies-logo.svgCommons-logo.svg Margarita nebrascensis and Scaphites nodosusWikispecies-logo.svgCommons-logo.svg Scaphites nodosus in a “Tepee Butte”Commons-logo.svgOpenstreetmap logo.svg Tepee Butte SE of ranchCommons-logo.svgOpenstreetmap logo.svg Dakan Ranch and reached ranch at 2:30 p.m. Boxed fossils for shipment. Downen had gotten our suitcases, so I had a bath, changed clothes and feel quite comfortable.

Perry Park, Colo.Commons-logo.svgOpenstreetmap logo.svg Perry Park, Colorado, July 26, 1908Wikipedia-logo-v2.svg July 26, 1908

Up at 6 a.m., breakfast at 6:45. Started at 9:55 in 2-seated carriage, with Frank Dakan for driver. Very bright, hot morning, Reached SedaliaCommons-logo.svgOpenstreetmap logo.svg Sedalia, Colorado at 11:40. Dined at hotel and got train at 1 p.m. Left DenverCommons-logo.svgOpenstreetmap logo.svg Denver, Colorado at 4 p.m. and reached BoulderCommons-logo.svgOpenstreetmap logo.svg Boulder, Colorado on time.



Boulder, Colo.Commons-logo.svgOpenstreetmap logo.svg Boulder, Colorado Aug.10, 1908Wikipedia-logo-v2.svg August 10, 1908

Cloudy, cool evening. Left for Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado on 7:50 train, taking Sievert Rohwer with me, late, starting at 8 p. m. Fare, two round trips, 5.00. Arrived in Ft. CollinsCommons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado9:45, went to Tedman HouseCommons-logo.svgOpenstreetmap logo.svg Tedman House. Has rained here.



Ft. Collins, Colo.Commons-logo.svgOpenstreetmap logo.svg Ft. Collins, Colorado, Aug 11, 1908Wikipedia-logo-v2.svg August 11, 1908

Up at 5:45, breakfast at 6:10. Started with team from Tate and Walker’s stableCommons-logo.svgOpenstreetmap logo.svg Tate and Walker's Stable at 6:50, misty and cold. Stopped at Just S or river NW of BelleviewCommons-logo.svgOpenstreetmap logo.svg Bellvue, Colorado, we examined the Lyons escarpment. The supposed thin l.s. seems to be a very fine grained s.s., slightly calcareous. Fountain covered, Lykins crossbedded s.s. underlaid by deep red friable Lykins thin bedded s.s. forms a very distant ridge. Lyons has a tendency to form two benches here. At Ingleside Carboniferous limestone forms crest and east slope of ridge as at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado, with pink Lyons s.s. on its lower east slope. The lower Lyons is very uniform, but above are strata like Lykins alternating with other strata like Lyons. Fed horses and lunched here. Drove over to Deadman’s ButteCommons-logo.svgOpenstreetmap logo.svg Deadman Butte, Colorado and searched for fossils in Lykins s.s. but found none. The Carboniferous limestones contain many crinoid fragments, mostly small, but we found nothing else. Continued misting and raining, so at 4 p.m. we drove to Ramer’s hotelCommons-logo.svgOpenstreetmap logo.svg Ramer's Hotel at LivermoreCommons-logo.svgOpenstreetmap logo.svg Livermore, Colorado, arriving much chilled. Roads very muddy. After supper talked with Prof. George and got better directions as to where he and Crawford found fossils in the Lyons.



Livermore, Colo.Commons-logo.svgOpenstreetmap logo.svg Livermore, Colorado, Aug. 12, 1908Wikipedia-logo-v2.svg August 12, 1908

Bright, warm morning. Roads muddy. Started at 7:30. Past l.s. ridge N of Deadman ButteCommons-logo.svgOpenstreetmap logo.svg Deadman Butte, Colorado, after photographing the ridge from top of butte. On stream N of ridge found typical purple conglomerate of Fountain. Above it on N slope of l.s. ridge, dipping S under the l.s. is a mostly thin bedded, crossbedded, fine grained sandstone of uniform red color, exactly like the Lyons as it occurs above the l.s. at {{place}Owl Creek Canyon, Colorado|Owl Canyon}} and elsewhere. Took photo of the ridge from west, with the l.s. at top and picture of eroded crossbedding from top of ridge looking east. Then proceeded on N to where Ten Mile CreekCommons-logo.svgOpenstreetmap logo.svg Tenmile Creek, Colorado breaks out of the granite. Here at top (S) of granite occurs a gneiss series with dip vertical, strike E-W parallel with granite Fountain contact, and interstratified with well crystallized. Barely above the granite is an obscure outcrop of pure white or light gray limestone. In creek bed section begins as follows above granite: (estimated only) dip S about 10˚.

ft

Covered about --------------------------------------------------------------------------------100

Fine grained, thin bedded light pinkish s.s.--------------------------------------------------3

Mottled dark red and white coarse ss--------------------------------------------------------3 ½

Dark, thin bedded shaly ss---------------------------------------------------------------------5

Alternating thins and thick bedded s.s., thick beds lighter (?) red than thin bedded -80

(fine to coarse grained- midway is a zone like Lyons- calcareous a little below middle) Covered over a creek bottom and slope----------------------------------------------------50

Below above series to E-calcareous s.s.----------------------------------------------------30

Below that, congl. With calcareous s.s. about---------------------------------------------50

Below that red pink and gray s.s. not calcareous------------------------------------------10

Underlaid by come(?) small exposure then covered to granite------------------------- 30 The bluff to the SE is about 250 or 300 ft high, alternating red s.s. and congl. Mostly with pinkish color characteristic of the Fountain at Left HandCommons-logo.svgOpenstreetmap logo.svg Left Hand Creek, Colorado , but some pure reds like Lyons at Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorad. In upper part are strong l.s. beds The cliff forms several benches. The upper 50 ft capped by strong l.s. is particularly Lyons like. The l.s. contains crinoid stems and Productus coraWikispecies-logo.svgCommons-logo.svg Productus cora. After lunch we drove to Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon. S of the canyon the 2 upper benches are capped by l.s. and between them and below the lower one are thick bands (12-15 ft.)of thin bedded, pinkish, crossbedded s.s. just like the s.s. overlying the upper s.s. which Darton calls the Ten Sleep. Here, as on Ten Mile CreekCommons-logo.svgOpenstreetmap logo.svg Tenmile Creek, Colorado, the Fountain is not nearly as conglomeratic as it is southward. The Carboniferous escarpment, except for the l.s. beds is just as in the Belleview fold above the Fountain. Below the limestones the sandstones and conglomerates are decidedly darker, less of a pink and more of a red. Found Productus coraWikispecies-logo.svgCommons-logo.svg Productus cora and fine calcite crystals in next to top limestone in Owl CanyonCommons-logo.svgOpenstreetmap logo.svg Owl Creek Canyon, Colorado. Loaded plate holders and went to bed early.



Livermore, Colo.Commons-logo.svg