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National Geologic Map Database

Geologic Unit: Exshaw

Usage:

Exshaw Formation (MT*)


Geologic age:

Late Devonian and Early Mississippian (late Famennian to middle Tournaisian)*


Type section, locality, area and/or origin of name: (See Canadian Lexicon)

Type locality: in Jura Creek, 1 mi east of Exshaw and 2 mi north of highway between Calgary and Banff, Alberta, Canada (Sandberg, 1967).
[Type section (corrected): in Jura Creek, 3.2 km (2 mi) north of Exshaw, Alberta; Lat. 51 deg. 05 min. 29 sec. N., Long. 115 deg. 09 min. 29 sec. W.; NTS 82O/3; eastern Rocky Mountain Front Ranges, southwestern Alberta (Lexicon of Canadian Geologic Units (accessed March 26, 2012); see also Richards and others, 1994).]
Named from town of Exshaw (Warren, 1937).


AAPG geologic province:

Sweetgrass arch*


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 ([ ]).