|
Unit No. |
Description |
Thickness |
20
|
Shale green
|
8 ft.
|
19
|
Covered
|
4 ft.
|
18
|
Limestone, massive, porous, yellowish greenish gray with Murchissonia
|
4 ft.
|
17
|
Limestone, flaggy
|
2 ft.
|
16
|
Shale, yellowish green
|
1.5 ft.
|
15
|
Limestone, crystalline, dark brownish gray, with geodes
|
1.5 ft.
|
14
|
Shale, base covered
|
5 ft.
|
13
|
Limestone, light gray, coquinoid, with pleecypods
|
1.5 ft.
|
12
|
Shale
|
1 ft.
|
11
|
Limestone, light gray
|
1 ft.
|
10
|
Shale
|
0.5 ft.
|
9
|
Limestone, porous, light gray, upper half mostly covered
|
3 ft.
|
8
|
Shale, light gray
|
2 ft.
|
7
|
Mudstone, porous, light gray, partly cov
|
8 ft.
|
6
|
Limestone, massive, light gray, numerous small fossils: bryozoa, crinoid joints, spines of brachiopods (Ft. Riley)
|
6 ft.
|
5
|
Shale, light gray, somewhat calcareous, with Dictyoclosta, Derbya crassa, Meekella, Composita, byrozoa
|
8 ft.
|
4
|
Limestone, light gray, flint in lower part
|
2 ft.
|
3
|
Shale
|
1 ft.
|
2
|
Limestone, light gray with bryozoa and brachiopods
|
2 ft.
|
1
|
Mostly flint
|
+ 18 ft.
|
|