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- Usage in publication:
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- Roses Mill Plutonic Suite*
- Modifications:
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- Named
- Dominant lithology:
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- Gneiss
- AAPG geologic province:
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- Piedmont-Blue Ridge province
Summary:
The Roses Mill Plutonic Suite, here named, includes the Roses Mill and Turkey Mountain plutons in the Roseland district, Nelson and Amherst Cos., VA. Four dominant rock facies are present: primary charnockitic ferrodiorite, secondary biotite augen gneiss, dike rocks in older formations, and nelsonite. The plutons intrude the anorthosite-granulite terrane, including the Roseland Anorthosite and charnockitic rocks of the Pedlar massif. Xenoliths of older rock are found in the Roses Mill pluton. Age is Middle Proterozoic, based on a U-Pb date of 970 Ma.
Source: GNU records (USGS DDS-6; Reston 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 ([ ]).