Pioche Shale

Usage of Geologic Unit Name:
Pioche Formation (NV*,UT*)
Pioche Shale (CA*,NV*,UT*)
Cambrian, Early*
Cambrian, Middle*
Great Basin province*

Type Locality:
Named for exposures southeast of the town of Pioche, NV on road to Panaca, UT, Pioche district, NV (Walcott, 1908).

(alphabetical): Combined Metals Member (NV*), Susan Duster Limestone Member (NV*), Tatow Member (UT*).
Unit Name History:
Named (Walcott, 1908). Divided into unnamed lower member and Tatow Member; Redescribed (Hintze and Robison, 1975).

Walcott, C.D., 1908, Cambrian geology and paleontology, I; No. 1, Nomenclature of some Cambrian Cordilleran formations: Smithsonian Miscellaneous Collections, v. 53, p. 1-12.

Hintze, L.H. and Robison, R.A., 1975, Middle Cambrian stratigraphy of the House, Wah Wah, and adjacent ranges in western Utah: Geological Society of America Bulletin, v. 86, no. 7, p. 881-891.

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* show accepted USGS usage.
Note that data on this page contains information that has been partly revised from bibliographic resources
available at the time this report was compiled.
The primary sources were the GeoRef Database and the National Geologic Map Database GEOLEX: http://ngmdb.usgs.gov/Geolex/geolex_qs.html.
The URL is: https://gotbooks.miracosta.edu/gonp/coloradoplateau/lexicon/pioche.htm
Last modified:8/10/2006