Page:Transactions of the Geological Society, 1st series, vol. 4.djvu/48

Strata sunk through in Percy Main Engine Pit. 1800.
Northumberland.

Fs.

Ft.

In.

Fs.

Ft.

In.

Blue Stony clay

13

─

6

Brought forward

67

4

4

Sand

─

2

1

Whin

─

1

6

Blue Stony clay

11

2

1

Grey metal with Whin girdles

1

─

8

Dry ditto

─

5

6

Post girdles

1

2

6

Leafy ditto

─

2

6

Grey Metal stone

─

3

9

Sand with a small feeder of water

─

1

8

Black metal mixed with Coal

─

1

3

Sand and clay

─

2

3

Grey metal

─

1

4

Strong clay

─

2

4

Skamy white post

1

2

6

Gravel

─

1

─

Grey metal with girdles

─

5

─

Sand with water

─

1

11

Black stone

─

─

8

Leafy clay

1

3

4

Grey metal with girdles

2

3

10

Sand with much water

─

4

1

Coal

─

1

─

Gravel

─

3

10

Thil

─

1

1

Brown skamy post^[1]

1

2

2

Greyish post

1

2

9

Very soft grey metal

─

2

─

White metal

─

4

─

Blue metal

─

5

─

White post

7

4

─

Lightish grey post

1

2

─

Black stone

─

1

9

Very hard black stone

─

3

6

Grey metal with girdles

─

─

10

Soft dark grey metal

─

1

─

Coal (A)

─

─

2

White Metal parting

─

1

1

Grey metal

─

2

─

Grey Metal girdles

5

─

─

Coal

─

1

2

Redish post with partings

4

3

─

Grey metal with girdles

1

2

6

Lightish grey post

5

─

─

Grey Metal stone

1

─

4

Redish post with partings

─

1

─

White post

10

4

6

Whitish post

─

3

─

Black stone

─

1

6

Soft red metal with partings

─

3

─

Skamy post

1

─

─

Very course bluish post

4

1

6

Whin

─

1

4

Brownish Metal mixed with post

1

2

─

Skamy post

─

3

8

Blue Metal mixed with post girdles

1

1

─

Blue stone with girdles

1

5

─

Grey ditto ditto

3

─

─

Dark blue metal

1

2

─

Grey Metal stone

2

2

10

Black stone

1

3

6

Coal	$\left.{\begin{matrix}\ \\\ \end{matrix}}\right\}$	Dark grey metal	$\left\{{\begin{matrix}\ \\\ \end{matrix}}\right.$
Grey metal
Coal

─

─

6

Coal

─

─

6

─

2

─

Grey Metal stone

─

3

─

─

1

─

Grey skamy post

─

4

─

Whin girdles

─

─

6

Main post

9

─

3

Dark grey metal with girdles

1

5

─

Coal	$\left.{\begin{matrix}\ \\\ \end{matrix}}\right\}$	Main Coal (B)	$\left\{{\begin{matrix}\ \\\ \end{matrix}}\right.$
Band
Coal

─

3

$\scriptstyle {\frac {1}{2}}$

Dark blue metal

1

1

─

─

─

2

Grey metal

─

5

─

─

2

10$\scriptstyle {\frac {1}{2}}$

─────────

─────────

Carried forward

67

4

4

Total Depth

119

1

─

1. Stone Head