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National Geologic Map Database

Geologic Unit: Laramie

Usage:

Laramie anorthosite complex [informal] (WY)
Laramie Anorthosite [informal] (WY)
Also called Laramie anorthosite-syenite complex (informal) in some reports.

Considered informal. The rank or lithologic term should not be capitalized.


Geologic age:

Mesoproterozoic**


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

[Exposed in southern Laramie Mountains, southeastern WY, from approx. Lat. 41 deg. 30 min. N. to Lat. 41 deg. 52.5 min. N., and Long. 105 deg. 10 min. W. to Long. 105 deg. 25 min. W.]


AAPG geologic province:

Southern Rocky Mountain region


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 ([ ]).