Marshall County Sec. 26, T. 4 S., R. 6 E

SW 1/4 sec 26 Measured By M.K. Elias, 1932 Remarks: III-5
	Unit No. Description Thickness 17 Base Florence flint   16 Covered 66 ft.   Schroyer limestone   15 Limestone, massive, almost entirely replaced by flint, with quartz geodes 1.5 ft. 14 Limestone, shaly, splittery, with quartz geodes 1 ft. 13 Limestone, massive, with one think band of flint and fossils: Dictyoclostus, large Derbyia, Chonetes, large Myalina, crinoid joints, Bryozoa 1.5 ft. 12 Flint 1.5 ft. 11 Shale, with Composita, Dictyclastus, Pinna, Myalina 0.5 ft. 10 Mudstone, massive, with small quartz geodes, and scattered Composita and a few small Myalina 4 ft. 9 Shale, calcareous 0.2 ft. 8 Mudstone, with small pebbles and Aviculopecten 0.5 ft. 7 Shale 0.3 ft. 6 Mudstone 0.8 ft. 5 Shale 0.3 ft. 4 Mudstone, somewhat cavernous, flaggy, few small Aviculopecten near the base 1.5 ft. 3 Shale, gray, splittery 1.5 ft. 2 Shale, blue-gray 1.5 ft. 1 Shale, calcareous, flaggy 1 ft.
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