| Unit No. |
Description |
Thickness |
|
15
|
Limestone - white, coarse grained, weathers to very cavernous or vuggy surface. Locally very fossiliferous of iron-stained. (Captain Creek)
|
14 ft.
|
|
14
|
Shale - poorly exposed
|
6 ft.
|
|
13
|
Limestone - algae, shown only by concentration blocks at break in slopes
|
0.7 ft.
|
|
12
|
Shale - poorly exposed, moderate olive brown (5Y4/4) on surface and dark yellowish gray (5Y7/1) on weathered surface
|
22 ft.
|
|
11
|
Siltstone - finely micaceous, yellowish gray (5Y7/2) to light olive gray (5Y5/2) which crops out as large fragments. Thin zone of ironstone concretions overlies it.
|
0.25 ft.
|
|
10
|
Shale - dark yellowish gray (5Y7/1) on weathered surface
|
42 ft.
|
|
9
|
Limestone - dark yellowish orange (10YR6/6) very fossiliferous containing abundant Cryptozoan, chain shaped bodies, brachiopod remains, and a few productuc spines and corals. Contains a few thin olive gray (5YR4/1) limestone beds that are speckled with white crinoid stems and locally dark colored oolites in the central and upper parts. Upper 3 ft. is very shaly
|
20 ft.
|
|
8
|
Shale - calcareous, very fossiliferous. Poorly exposed but appears to be light olive gray (5Y6/1) with many dusky yellowish brown (10YR2/2) coral stalks and chain shaped bodies
|
8 ft.
|
|
7
|
Limestone - hard, resistant, breaks into large blocks, pale yellowish orange (10YR8/6) on weathered surface. Pale yellowish brown (10YR6/2) to moderate yellowish brown (10YR5/4) on fresh surface. Very fossiliferous. Contains crinoid stems, brachiopods, pelecypods, and corals
|
0.7 ft.
|
|
6
|
Shale - calcareous, slightly fossiliferous, grayish orange (10YR7/4)
|
1 ft.
|
|
5
|
Shale - silty, yellowish gray (5Y7/2) to light olive gray (5Y5/2) with .5 ft. lenses of claystone colored moderate yellowish brown (10YR5/4) in lower 1/3. Claystone lenses contain sporadic, small calcareous ironstone concretions
|
7 ft.
|
|
4
|
Claystone - slightly silty, medium olive gray (5Y7/2) in basal foot grading upward into moderate yellowsih brown (10YR5/4) claystone. Contains zone of pale yellowish orange calcareous ironstone concretions about 1 foot from top
|
4 ft.
|
|
3
|
Shale - silty, medium olive gray (5Y5/1), unfossiliferous apparently, contains three 1 in. layers of calcareous ironstone concretions in the upper .2 ft. where it grades upward into claystone
|
8 ft.
|
|
2
|
Shale - yellowsih gray (5Y8/1), unfossiliferous, covered above basal 3 ft.
|
35 ft.
|
|
1
|
Limestone - light olive gray (5Y6/1), massive, poorly bedded, fragmental in Osagia? matrix
|
1.1 ft.
|
