|
| Unit No. |
Description |
Thickness |
|
10
|
Slope up to uplands which cover large area
|
10 - 15 ft.
|
|
9
|
"Kirchoff flags", not well exposed
|
? ft.
|
|
8
|
Covered slope, some black shale at base
|
32.4 ft.
|
|
7
|
Winterset limestone, characteristic of area
|
+/- 2 - 3 ft.
|
|
6
|
Covered slope, many hard maples, where soil is thin, gray shale is seen
|
+/- 20 ft.
|
|
5
|
Black, platy shale, large dense, hard, blue concretions up to 2 feet in diameter, shale bedding is around concretions, concretions are of concentric layers, which gives them a bedded appearance
|
12 ft.
|
|
4
|
Shale, yellow to gray, appears to be 1 foot thick cue to fact upper part of limestone below weathers as a shale. Lower 2 inches of shale is gray and shows uneven contact with limestone below; upper part of shale is comewhat limonitic and carbonaceous and phosphatic (?)
|
55 ft.
|
|
3
|
Limestone, mostly of fossil fragments, crinoid stems, marginifera, blue gray in one bed
|
3.5 ft.
|
|
2
|
Shale, yellow, gray
|
0 - 0.5 ft.
|
|
1
|
Limestone, brown and blue, earthy yet crystalline, many marginiferas, one bed shows irregular fracture
|
2.9 ft.
|
|
|
Top of No. 3 is 90 feet. (Barometer) above Verdigirs River.
|
|
|
|
Winterset base is here 122 feet above river.
|
|
|
