Page:Transactions of the Geological Society, 1st series, vol. 4.djvu/56

Section of the Strata at Sheriff Hill on Gateshead Fell.

		Fs.	Y.	F.	In.		Fs.	Y.	F.	In.
	Shiver and Blue slate sill	3	─	─	─		Brought forward	80	─	─	─
	White flag post	2	─	─	─	8	Bensham Seam[1]	─	1	─	3
	Grindstone sill	11	─	─	─		Blue plate	2	─	─	─
	White post plate	1	1	─	─	9	Bandy Coal Seam	─	─	─	9
	Blue plate	1	─	─	─		White post sill	5	─	2	─
	Grey post plate	1	1	─	─		Blue plate	─	1	─	─
	Blue plate	1	─	─	─	10	Six Quarter Coal	1	─	─	3
	Whine plate	1	1	─	─		Grey Whin post	1	1	2	7
	Blue sill	1	─	─	─	11	Five Quarter Coal[2]	─	1	─	2
	White post sill	3	1	─	─		Grey post	1	1	2	3
1	Three quarter Coal	─	─	2	3	12	Bandy Coal Seam	─	─	─	9
	White post sill	5	1	─	─		White post	5	─	─	─
	Grey post	1	─	─	─	13	Low Main Coal[3]	1	─	─	6
	Dun post sill	6	─	─	─		Dark white sill	─	─	1	─
	Blue plate	1	─	─	9		White post	3	1	2	6
	Eleven fathoms White post	11	─	─	─	14	Coal Quarter Coal	─	─	1	6
2	High Main Coal[4]	1	─	─	─		White post sill	21	─	─	6
	Grey post sill	6	─	─	─			─	─	─	─
	Metal plate	1	─	─	─		Harvey's Main Coal, or Wickham Stone Coal	─	1	─	─
3	Metal Coal	─	─	1	2			──────────
	White post	4	─	1	10		Fathoms	134	─	─	─
4	Stone Coal[5]	─	1	─	─			──────────
	Black stone sill	1	1	─	─	To the Brockwell, the lowest seam; which crops out at Basty Bank near Cement Park, Durham.
5	Bandy Coal Seam	─	─	─	6
	White post sill	4	1	─	6
	Blue plate	2	1	─	─	Grey metal and Metal stone		5	─	2	10
	Black plate	─	─	1	6	Brockwell Seam		─	1	─	2
6	Little Coal Seam	─	─	─	6			──────────
	Grey sill	2	─	─	─		Fathoms	6	─	─	─
7	Yard Coal	─	2	─	─			──────────
	White post sill	11	1	─	─
		─	─	─	─
		──────────
	Carried forward	88	─	─	─

Birtley Colliery.^[6]

Fs.

Ft.

In.

Fs.

Ft.

In.

Brown post	$\left.{\begin{matrix}\ \\\\\\\\\ \end{matrix}}\right\}$
Grey Metal stone
Brown stone
White post
Blue Metal stone
Grey post
Blue and grey Metal stone

32

─

─

Brought forward

43

5

6

White and brown post	$\left.{\begin{matrix}\ \\\ \end{matrix}}\right\}$
Grey Metal stone with Whin near the bottom

11

─

6

Maudlin Seam

─

4

6

Blue post	$\left.{\begin{matrix}\ \ \end{matrix}}\right\}$
Blue and grey Metal stone

12

1

6

Low Main Coal

─

3

3

Five Quarter Coal

─

3

9

Blue Metal stone	$\left.{\begin{matrix}\ \ \end{matrix}}\right\}$
White post and Whin

7

2

9

Grey post	$\left.{\begin{matrix}\ \ \end{matrix}}\right\}$
Grey Metal stone with whin girdles

10

2

3

Hutton Seam

─

4

6

Main Coal

─

5

6

────────

Total

76

4

6

────────

1. Maudlin Seam on the Wear.
2. The Six quarter and Five quarter Coal Seams form the Low Main Coal on the Wear.
3. Hutton Seam on the Wear.
4. This Seam does not extend to the mines on the Wear.
5. This and the Metal Coal form the Five Quarter Coal on the Wear.
6. Communicated to the Author by the Rev. W. Turner.