102
NEW YORK STATE MUSEUM
The peculiar yellow plattenkalke and marls of Oesel which contain the well known Baltic eurypterid fauna are of similar character with the Salina eurypterid beds.
A different rock facies containing eurypterids is represented in the Pittsford shale and the Shawangunk grit shale beds. In the former the fossils occur in a rather fissile, very dark olive-green to black shale. Its relations to the Salina section have been recorded by Sarle [1903, p. 1082].[1]
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SECTION IN OLD ERIE CANAL AT PITTSFORD
Salina
Top Feet Inches 1 Red shale 6 2 Light gray, compact, fine grained, dolomite, with imperfect conchoidal fracture, weathering light brown to cream color 10 3 Soft, gritty mudrock, purple with bright red mottlings 1 3 4 Dolomite like no. 2 4 5 Purple shale with red mottlings 1 11 6 Green shale 1 2 7 Thin layer dolomite like no. 2 4 8 Black shale, very compact, the base splitting unevenly; grading to olive-green shale in the upper part 10 9 Dolomite like no. 2 10 10 Black shale, with leaf of dolomite ½ inch thick 4 inches from its base 1 2 11 Dolomite like no. 2 2 12 Soft, green, arenaceous mudrock, occasionally becoming shaly; the lowest exposed rock of the cut 1 8
Top | Feet | |
10 | Rondout. Upper portion, light weathering impure limestone; lower portion, a cement rock with cavities (see p. 170) | 45 |
11 | Cobleskill. Fossiliferous limestone gradually grading into the Rondout | 6 |
12 | Salina. Waterlime with Eurypterus | 6 |
13 | Salina. Soft, greenish shales | 10 |
14 | Salina. Gypsum beds, with intercalations of shale | 65 |
255 |