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Geologic Unit: Warm Creek
Map showing publication footprint
  • Usage in publication:
    • Warm Creek Shale†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Williston basin
Publication:

Rice, D.D., 1976, Revision of Cretaceous nomenclature of the northern Great Plains in Montana, North Dakota, and South Dakota, IN Cohee, G.V., and Wright, W.B., Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1975: U.S. Geological Survey Bulletin, 1422-A, p. A66-A67.


Summary:

†Warm Creek Shale of Collier and Cathcart (1922, p. 172) and Knechtel (1959, p. 740-741) in north-central Montana abandoned. Rocks reallocated to (ascending) Belle Fourche Shale, Greenhorn Formation, Carlile Shale, Niobrara Formation, and Telegraph Creek Formation.

Source: Changes in stratigraphic nomenclature, 1975 (USGS Bull. 1422-A, p. A42-A43, A66-A67).


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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