Schroyer limestone. Top member of Wreford limestone of Chase group. Chert-bearing limestone, 8 or 9 feet thick in vicinity of Cambridge, Cowley County, eastern Kansas, and about 20 feet thick in Big Blue Valley, in vicinity of Randolph. In Nebraska its maximum exposed thickness is about 10 feet, in a small creek valley 3 miles southeast of Wymore. Overlies Havensville shale member of Wreford limestone and underlies Wymore shale member of Matfield formation of Chase group. Age is Permian (Big Blue).
Type locality: on east side of Big Blue Valley, about 1.25 mi below Schroyer, Marshall Co., eastern KS.
Source: US geologic names lexicon (USGS Bull. 896, p. 1942); GNC KS-NE Permian Corr. Chart, Oct. 1936.
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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