- Usage in publication:
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- Diana Mills complex
- Modifications:
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- Overview
- AAPG geologic province:
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- Piedmont-Blue Ridge province
Summary:
Diana Mills complex is mapped in Buckingham Co. on the State map. Description is credited to Brown (1969). Composed principally of hornblende metadiorite and hornblende-quartz metadiorite. Includes hornblendite, amphibolite, metaperidotite, orbicular serpentinite, pegmatite, and aplite. Complex is generally concordant with the foliation of the enclosing metagraywacke. May be a layered intrusive sill or an exotic block, emplaced within the unnamed Cambrian metagraywacke by gravity sliding or other tectonic means. Age is not discussed, but map symbol indicates a Late Proterozoic and Paleozoic age.
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 ([ ]).