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National Geologic Map Database

Geologic Unit: Bancroft

Usage:

Bancroft Limestone (ID*,UT*)


Geologic age:

Middle Cambrian*


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

Type section: measured in center sec. 7, T. 10 S., R. 39 E., Bancroft quadrangle, Bannock Co., ID (Oriel and others, 1971).
Type area: faulted belt on east side of Portneuf Range, in SW/4 of Bancroft 15-min quadrangle, Bannock and Caribou Cos., ID (Oriel and others, 1971).
Named from town of Bancroft, Bancroft 15-min quadrangle, Bannock Co., ID (Oriel and others, 1971).


AAPG geologic province:

Great Basin province*
Snake River basin*
Wasatch uplift*


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 ([ ]).