- Usage in publication:
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- Douglas Creek granite-quartz monzonite complex
- Modifications:
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- Named
- Dominant lithology:
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- Granite
- Quartz monzonite
- AAPG geologic province:
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- Northern Rocky Mountain region
Summary:
Named as an informal descriptive term for a granite-quartz monzonite complex that are a series of interconnecting bodies. Cuts gabbro of the Mullen Creek mafic complex (first used) and hornblende gneiss. Is in sharp contact with gabbro. Inclusions of gabbro in the granite common. Contacts with hornblende gneiss are conformable to gradational. Is generally foliated. Is cut by stringers of pegmatite. Table of mineralogy. Geologic map. Intent to name, source of geographic name, and type locality not stated. Douglas Creek present in southeast Carbon and southwest Albany Cos, WY. Report area lies in the Northern Rocky Mountain region. Precambrian age. Is one of several small to medium-sized bodies of granite and quartz monzonite in area of Mullen Creek mafic complex.
Source: GNU records (USGS DDS-6; Denver GNULEX).
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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).