Marshall County Sec 7, T. 3 S, R. 7 E.

Center sec 7, three miles south of Old Dutch Mill Cabin Camp on west side of Big Blue River Measured by M.K. Elias, 1932 Remarks: III-12

Unit No. Description Thickness ft.   Florence limestone member   20 Limestone, solid, with flint bands 3   Blue Springs shale formation   19 Shale, calcareous 1   Limestone 2 18 Shale, green 5 17 Shale, red and purple with few green bands 5 16 Shale, red, somewhat hardened 2.2 15 Shale, green 0.7 14 Shale, red, somewhat hardened 2 13 Shale, green 0.5 12 Shale, purple 0.5 11 Shale, red 1 10 Shale, purple, with dark-green band on top 1.5 9 Shale, purple, with green bands 2.5 8 Shale, green 1 7 Shale, light-gray, finely bedded, somewhat hardened 4 6 Shale, black, massive 1 5 Shale, light-gray, finely bedded, somewhat hardened, with Lingula 3 4 Shale, dark-gray to black, massive, in lower part gypsum nodules 2.5   Kinney limestone formation   3 Limestone, platy, shaly, blue-gray, in upper part with gypsum nodules and Pinna, Allorisma, and Derbya 3 2 Shale 1.5 1 Limestone 0.5