|
Unit No. |
Description |
Thickness |
6
|
Massive, +/- crystalline, less earthy than below dark-blue-gray
|
5 ft.
|
5
|
Shale, with irregular beds of limestone; bryozoans
|
1 ft.
|
4
|
Limestone, massive, earthy, blue, dark, brachiopods, Bellerophonoids
|
0.35 ft.
|
3
|
Shaly limestone
|
0.6 ft.
|
2
|
Massive limestone; dark-blue-gray earthy
|
2.4 ft.
|
1
|
Shale, blue-gray, flaky, exposed
|
2 ft.
|
|
Great thickness of Winterset above
|
|
|