|
Unit No. |
Description |
Thickness |
|
Threemile Limestone
|
|
58
|
Flint
|
|
|
Speiser Shale
|
|
57
|
Shale, calcareous
|
|
56
|
Limestone, somewhat splittery; brachiopods, pelecypods, bryozoans
|
1.5 ft.
|
55
|
Covered
|
10 ft.
|
54
|
Limestone, tough, banded
|
2.5 ft.
|
|
Funston Limestone
|
|
53
|
Covered
|
9 ft.
|
52
|
Limestone, banded, flaggy
|
1 ft.
|
51
|
Shale
|
3 ft.
|
50
|
Limestone, coquinoid, mostly fragments of shells; bryozoans, flaggy
|
1.5 ft.
|
49
|
Shale
|
3.5 ft.
|
48
|
Limestone, brecciated, somewhat banded; on top molds of large Pleurophorus. In lower 0.5' very scattered nearly spherical Tomphospongia
|
1.5 ft.
|
|
Blue Rapids Shale
|
|
47
|
Shale, green
|
5.5 ft.
|
46
|
Shale, red
|
1.5 ft.
|
45
|
Shale, green
|
1 ft.
|
44
|
Covered
|
9 +/- ft.
|
|
Crouse Limestone
|
|
43
|
Limestone, flaggy (slumps considerably, may be shaly partings), tough, unfossiliferous
|
9 ft.
|
42
|
Covered
|
3 ft.
|
41
|
Limestone, tough, massive, full of microfossils (?), yellow hue, breaks in slabs
|
1 ft.
|
40
|
Shale, soft, gray
|
6 ft.
|
39
|
Limestone, full of pelecypods: Aviculopecten, Pseudomonotis, numerous attached "Spirula"
|
2.2 ft.
|
|
Easly Creek Shale
|
|
38
|
Shale, clayey, soft, green
|
1.5 ft.
|
37
|
Shale, green, finely laminated and banded, some lamina hard
|
3.5 ft.
|
36
|
Mudstone, greenish
|
0.1 ft.
|
35
|
Shale, green, soft
|
0.9 ft.
|
34
|
Shale, green, with few red spots in lower part
|
1 ft.
|
33
|
Shale, red
|
1 ft.
|
32
|
Shale, green
|
1 ft.
|
31
|
Limestone, greenish
|
0.2 ft.
|
30
|
Shale, green
|
0.3 ft.
|
29
|
Shale, red
|
2 ft.
|
28
|
Shale, green
|
0.5 ft.
|
27
|
Shale, red
|
0.5 ft.
|
26
|
Shale, green
|
1 ft.
|
25
|
Box-work (intercalation of numerous calcite veinlets in shale)
|
2 ft.
|
24
|
Covered
|
3 ft.
|
23
|
Shale, dark gray
|
1 ft.
|
|
Middleburg Limestone
|
|
22
|
Limestone, full of pelecypods (Aviculopecten and others); Near top Septopora, Juresania
|
2.2 ft.
|
21
|
Shale, gray
|
5.5 ft.
|
20
|
Limestone, massive, green hue
|
0.5 ft.
|
19
|
Shale
|
0.5 ft.
|
18
|
Limestone, somewhat cavernous, massive, shaly, full of fossils, Meekella, Derbya
|
2 ft.
|
17
|
Limestone, flaggy, Myalina, Pleurophorus
|
0.5 ft.
|
|
Hooser Shale
|
|
16
|
Shale, gray, dark band in upper part, also fossils (Meekella)
|
3.5 ft.
|
|
Eiss Limestone
|
|
15
|
Limestone (Derbya, Orbiculoidea), somewhat splittery shaly
|
0.5 ft.
|
14
|
Shale, calcareous, dark-gray, numerous fossils: Chonetes, Meekella, Ambocoelia, Composita, Derbya (small individual with two valves collected)
|
3.5 ft.
|
13
|
Limestone, with middle calcareous shale parting. Meekella, Aviculopecten
|
2 ft.
|
|
Stearns Shale
|
|
12
|
Shale, gray, platy, somewhat sandy
|
3 ft.
|
11
|
Shale, gray, platy, hard (calcareous?) sandy
|
1 ft.
|
10
|
Shale, black, fissile
|
1 ft.
|
9
|
Shale, gray
|
3 ft.
|
8
|
Limestone, rough weathering (Algal?) (like at top of Neva)
|
0.5 ft.
|
7
|
Shale, green
|
0.7 ft.
|
6
|
Mudstone, greenish
|
0.3 ft.
|
5
|
Shale, green, in basal 1.5' zones of calcareous nodules
|
3.5 ft.
|
4
|
Covered
|
3 ft.
|
|
Morrill Limestone
|
|
3
|
Limestone, tough, somewhat cavernous and banded
|
1.5 ft.
|
|
Florena Shale
|
|
2
|
Covered (Florena Shale) [discrepancy on original document: listed as "Florence Shale"]
|
8.5 ft.
|
1
|
Cottonwood Limestone
|
|
|