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Chase County

Sec. 21, T. 20 S., R. 8 E
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1/4 mile east of first gas station on k-13 south of Cottonwood Falls
Measured By H.G. O'Connor, 8/12/1947
Unit No. Description Thickness
1 Limestone - light gray to white; partly crystalline, partly silicified; few quartz geodes; high spired snails, brown clams, silicified Derbya, a few echinoids; base covered 1.5 ft.
2 Covered - including unit 1 27 ft.
3 Limestone - gray; dense; suboolitic; few Osagia; may not be in place due to float 0.3 ft.
4 Shale - buff green to olive; clayey to finely blocky 2.2 ft.
5 Limestone - gray mottled; silty; thin uneven to shaly bedded; clams, bryozoans, Dictyoclostus; weathers buff and light gray 2.8 ft.
6 Limestone - (or siltstone) gray to buff; medium to thin-bedded; snails and clams 1.35 ft.
7 Shale - olive buff to green; clayey; finely blocky with a calcareous zone near middle 4.5 ft.
8 Limestone - (or marl) green and buff with light gray angular limestone pebbles in parts of the limestone; veined with calcareous and clayey material 3.85 ft.
9 Shale - green; clayey; blocky; partly buff 2.5 ft.
10 Covered  

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