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National Geologic Map Database
Geologic Unit: Somerville
Map showing publication footprint
  • Usage in publication:
    • Somerville granite
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Granite
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Lonsdale, J.T., 1927, Geology of the gold-pyrite belt of the northeastern Piedmont, Virginia: Virginia Geological Survey Bulletin, no. 30, 110 p.


Summary:

Somerville granite. Typically developed near Somerville, Fauquier County, northeastern Virginia. Is coarse-grained biotite-muscovite granite, massive, pegmatitic, of Precambrian or Cambrian age, and closely related to Locust Grove granite.

Source: US geologic names lexicon (USGS Bull. 896, p. 2026).


Map showing publication footprint
  • Usage in publication:
    • Somerville granite
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Jonas, A.I., 1928, Geological map of Virginia; preliminary edition: Virginia Geological Survey


Summary:

Somerville granite. Mapped the granite at and around Somerville, Fauquier County, northeastern Virginia, as Precambrian and as intrusive into Glenarm series (Algonkian?).

Source: US geologic names lexicon (USGS Bull. 896, p. 2026).


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 ([ ]).