Dickinson County Sec. 12, T. 11 S., R. 2 E

W center NW 1/4 of section Measured By M.K. Elias, 1932 Remarks: V-12
	Unit No. Description Thickness   Odell Shale Member   10 Shale, red 1.5 ft. 9 Shale, green 1.5 ft. 8 Mudstone, white, splittery, with zone of quartz geodes below the middle and with Orbiculoidea in one half 3 ft. 7 Limestone, flaggy at the top; zone of flint nodules near the base; with Pleurophorus and Murchisonia 2 ft.   Cresswell Limestone Member   6 Mudstone, splittery 2 ft. 5 Mudstone 1 ft. 4 Mudstone, splittery, few echinoid remains in one part 6.5 ft. 3 Limestone, massive, geodes near the top; few echinoid remains 2 ft. 2 Mudstone, splittery 0.5 ft. 1 Shale, calcareous, with Derbya in one part 1 ft.
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