Usage:
Montpelier Anorthosite (VA*)
Geologic age:
Mesoproterozoic*
Type section, locality, area and/or origin of name:
Open-pit mine (presently operated by U.S. Silica Company) located 5.5 km S. 25 deg. W. of Montpelier, north side of South Anna River at Gouldin, southwestern Hanover Co., eastern VA (Aleinikoff and others, 1996).
AAPG geologic province:
Piedmont-Blue Ridge province*
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 ([ ]).