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National Geologic Map Database
Geologic Unit: Jenkins
Map showing publication footprint
  • Usage in publication:
    • Jenkins clay
  • Modifications:
    • Named
  • Dominant lithology:
    • Clay
  • AAPG geologic province:
    • Anadarko basin
Publication:

Cragin, F.W., 1896, The Permian system in Kansas: Colorado College Studies, v. 6, p. 1-48., See also "Modern classifications of the Permian rocks of Kansas and Nebraska," compiled by M.G. Wilmarth, Secretary of Committee on Geologic Names, USGS unpub. corr. chart, Oct. 1936, 1 sheet


Summary:

Named as an unranked unit of Cave Creek formation (new) of the Salt Fork division (new) of the Cimarron series (new) for the former Jenkins post office, near Cave Creek. No type locality designated although one locality was measured on Cave creek at the Comanche cave, Comanche Co, KS, Anadarko basin. At that locality thickness of Jenkins clay is 7 to 10 ft. Is an interval of red clay separating Shimer gypsum (new, unranked), above, from Medicine Lodge gypsum (new, unranked), below; both units of the Cave Creek formation of Salt Fork division of Cimarron series. Of Permian age.

Source: GNU records (USGS DDS-6; Denver GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

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