Marshall County Sec 30, T. 2 S, R. 9 E.

On U.S. Highway 36, 2 1/4 miles west of Highway K-11 Measured by M.K. Elias, 1932 Remarks: II-9
	Unit No. Description Thickness ft. 10 To the base of three Mile limestone member 26.5 ± 9 Shale, gray 0.6 8 Mudstone 0.4 7 Shale, gray 0.5 6 Limestone made largely of calcareous algal structure 0.6 5 Shale, green 4.5 4 Shale, purple 0.5 3 Shale, green 0.7 2 Shale, purple 0.3 1 Shale, green 1

Note: This section probably is entirely in the upper part of the Blue Rapids shale member.