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National Geologic Map Database

Geologic Unit: Strathearn

Usage:

Strathearn Formation (NV*,UT*)


Geologic age:

Permian, Early*
Pennsylvanian, Late*


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

Type section: on west side of head of lower canyon of South Fork of Humboldt River, 4 mi southeast of Strathearn Ranch and northeast of Grindstone Mountain, in SW/4 sec. 19, T. 33 N., R. 55 E., and along south line of sec. 24, T. 33 N., R. 55 E. Named from Strathearn Cattle Company which owns ranch in Humboldt Valley, 3.5 mi north of Grindstone Mountain and 2 mi east of Moleen, in sec. 8, T. 33 N., R. 54 E. (Dott, 1955).
Supplementary section containing higher strata occurs 1.5 mi farther south, and on east side of river at mouth of the upper canyon of South Fork, in NW/4 sec. 31, T. 33 N., R. 55 E. (Dott, 1955).


AAPG geologic province:

Great Basin province*


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