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Geologic Unit: Graham
Map showing publication footprint
  • Usage in publication:
    • Graham jasper*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Jasper
  • AAPG geologic province:
    • Central Kansas uplift
Publication:

Cragin, F.W., 1896, On the stratigraphy of the Platte series, or Upper Cretaceous of the Plains: Colorado College Studies, v. 6, p. 49-52.


Summary:

Pg. 51. Graham jasper, the horizon of jasper near upper limit of Smoky Hill chalk in Kansas. Age is Late Cretaceous.
Named from Graham Co., northwestern KS.

Source: US geologic names lexicon (USGS Bull. 896, p. 848).


Map showing publication footprint
  • Usage in publication:
    • Graham Jasper
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Central Kansas uplift
Publication:

Keroher, G.C., 1960, [Selected U.S. Geologic Names Committee remarks, ca. 1960], IN Keroher, G.C., 1966, Lexicon of geologic names of the United States for 1936-1960: U.S. Geological Survey Bulletin, 1200, pts. 1-3, 4341 p.


Summary:

†Graham Jasper (in Niobrara Formation) abandoned.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1559).


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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