Marshall County Sec. 27, T. 5 S., R. 9 E

NW corner of sec 34 and SW corner of sec 27 Measured By M.K. Elias, 1932 Remarks I-7, 2-4
	Unit No. Description Thickness   Middleburg limestone member   50 Limestone, splittery, with Pseudomonotis, Aviculopecten, Juresania, and Septopora 1.5 ft.   Hooser shale member   49 Shale, green 4.5 ft. 48 Shale, green, massive, laminated 2 ft. 47 Shale, maroon, splittery 2 ft. 46 Shale, red 5 ft.   Eiss limestone member   45 Limestone, banded, tough, cavernous, yellow-gray 2.7 ft. 44 'Boxwork,' green 2 ft. 43 Shale, green, Chonetes near the base 0.8 ft. 42 Mudstone, green, with crinoid joints, bryozoa (Meekopora and others), Chonetes, and Composita 1.5 ft.   Stine shale formation   41 Mudstone, harder than the bed above, green, fine, sandy, banded, anbd splittery 3.5 ft. 40 Shale, dark-green 3.5 ft. 39 Shale, purple, with blue-green spots 3.5 ft. 38 Shale, calcareous, massive, light-green 2 ft. 37 Shale, calcareous, splittery 1 ft. 36 Shale, splittery 1 ft. 35 Shale, yellowish, calcareous 1 ft. 34 Mudstone, gray, calcareous, banded to laminated 6 ft. 33 Shale, yellowish 1 ft.   Morrill limestone member   32 Mudstone, blue-gray, massive, fossiliferous 2 ft.   Florena shale member   31 Shale, blue-gray, calcareous, fossiliferous 3.1 ft.   Cottonwood limestone member   30 Limestone, massive, with fusulinids and a band of cherty concretions in the middle 2 ft. 29 Limestone, massive, fusulinids in the upper 1 foot, two bands of cherty concretions in the lower 1.4 feet. 2.4 ft. 28 Limestone, slightly softer than the beds above, massive 1 ft. 27 Mudstone, splittery 0.5 ft. 26 Limestone, massive, with few Chonetes 1.5 ft. 25 Mudstone, splittery 0.5 ft. 24 Mudstone, solid 0.5 ft.   Eskridge shale formation   23 Shale, green 2 ft. 22 Mudstone, green, splittery; in a bed 3 feet below the top occurs Pseudomonotis, Aviculopecten, Juresania 5 ft. 21 Shale, dark, green-blue 1 ft. 20 Shale, light-green 1..5 ft. 19 Shale, light-purple 0.5 ft. 18 Limestone 0.1 ft. 17 Shale, light-purple 0.7 ft. 16 Shale, green 1.2 ft. 15 Shale, red 2 ft. 14 Shale, purple 0.5 ft. 13 Mudstone, green 1.5 ft. 12 Shale, purple and blue-green 1 ft. 11 Shale, purple 1.5 ft. 10 Shale, green 1 ft. 9 Shale, purple and dark-green 2 ft. 8 Shale, green 0.9 ft. 7 Shale, red 1.8 ft. 6 Shale, green 0.4 ft. 5 Shale, red 1.8 ft. 4 Shale, green 0.4 ft.   Neva limestone formation   3 Mudstone, gray, canvernous 0.8 ft. 2 Shale, calcareous, splittery 1 ft. 1 Mudstone, massive, with echinoid spines 2+ ft.
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