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National Geologic Map Database

Geologic Unit: Harper

Usage:

Harper Sandstone of Nippewalla Group (KS*)
Harper Siltstone of Nippewalla Group (KS*)
Harper Siltstone (OK)
Harper Member of Salt Fork Formation (NE)


Subunits:

FORMATION STATUS (alphabetical): Chikaskia Sandstone Member (KS,OK), Kingman Member (KS) or Kingman Sandstone Member (KS*,OK), Ninnescah Shale Member (KS), Stone Corral Member (KS).


Geologic age:

Early Permian (Cisuralian; Leonardian)*


Type section, locality, area and/or origin of name:

Named from exposures in Harper Co., central southern KS (Cragin, 1896).


AAPG geologic province:

Sedgwick basin*


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

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).