Pg. 51. Osborne limestone, lower formation of Niobrara division of Platte series. Limestone, in rather thick courses, overlying Vlctoria shale [also called Victoria formation and Victoria clays] and constituting lower formation of Niobrara. Overlain by Smoky Hill chalk, upper formation of Niobrara. Age is Late Cretaceous. Report includes fossil list.
Named from exposures at Osborne and in Osborne Co., north-central KS. Forms bluffs in forks of Walnut Creek, Ness County; occurs at Solomon River, Osborne County, and at Ft. Hays, southeastern Rooks County.
Source: US geologic names lexicon (USGS Bull. 896, p. 1566); supplemental information from GNU records (USGS DDS-6; Denver GNULEX).
†Osborne limestone is same as Fort Hays limestone member of Niobrara formation, the better established name.
Source: US geologic names lexicon (USGS Bull. 896, p. 1566).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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