|
Unit No. |
Description |
Thickness |
|
Towanda Limestone Formation
|
|
18
|
Limestone, solid, coquina-like to fine conglomeratic cross-bedded
|
2.5 ft.
|
17
|
Limestone, somewhat porous, with small Murchisonia
|
3.8 ft.
|
16
|
Shale, calcareous, splittery
|
0.8 ft.
|
15
|
Limestone
|
2 ft.
|
|
Holmesville Shale Formation
|
|
14
|
Mudstone, splittery, geodic in 1 half
|
8 ft.
|
13
|
Shale, calcareous, splittery
|
1 ft.
|
12
|
Shale, full of small geodes
|
0.5 ft.
|
11
|
Shale, calcareous to mudstone, splittery
|
1.5 ft.
|
10
|
Limestone, porous, with geodes
|
0.5 ft.
|
9
|
Shale, calcareous, splittery
|
0.5 ft.
|
8
|
Limestone with small geodes; in two beds
|
3 ft.
|
7
|
Limestone, with geodes in the middle part, splittery at the base
|
4 ft.
|
6
|
Shale, calcareous, splittery, with Pleurophorus, Aviculopecten, and small rod-like imperssions
|
2.5 ft.
|
5
|
Shale, calcareous, splittery
|
4.5 ft.
|
4
|
Limestone, massive, with Derbya, Meekella, Aviculopecten, Straparollus
|
1.8 ft.
|
3
|
Limestone, shaly
|
0.5 ft.
|
2
|
Limestone, massive
|
1.7 ft.
|
1
|
Limestone, massive
|
5 ft.
|
|