Dickinson County Sec. 21, T. 16 S., R. 2 E

N of "Insect Hill" Measured By J.M. Jewett and R. Kulstad, June 23, 1952
	Unit No. Description Thickness 8 Limestone, ashy gray, hard, blocks may not be in place   7 Shale, yellow, limy, harder at base 1.8 ft. 6 Limestone, purplish-brown to bluish-gray, hard abundant Estheria 0.6 ft. 5 Shale, clayey, deeply weathered, grades into... 5.6 ft. 4 Shale, bluish-gray and yellow, very black in lower 1' +/- 5.5 ft. 3 Limestone, hard crystalline-borite? in upper part; lower gray, massive, blocky 2.0 ft. 2 Shale, gray, lignite at top, largely covered 17.7 ft. 1 Red clay, some gray, exposed 10.0 +/- ft.
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