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  • Usage in publication:
    • Smith Mountain ultramafic Complex
  • Modifications:
    • Named
  • Dominant lithology:
    • Pyroxenite
    • Gabbro
    • Norite
    • Amphibolite
    • Soapstone
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Bentley, R.D. (editor), and Neathery, T.L. (editor), 1970, Geology of the Brevard fault zone and related rocks of the Inner Piedmont of Alabama: Alabama Geological Society Annual Field Trip Guidebook, December 4-5, 1970, no. 8, 119 p.


Summary:

Smith Mountain introduced as one of two large mafic-ultramafic complexes mapped in the Dadeville Complex. Rock assemblage includes enstatite-hypersthene-pyroxenite masses, metagabbro, metanorite, massive amphibolites, and soapstone. Massive hornblende-amphibolite has been found near Smith Mountain. Pyroxenite bodies range in diameter from a few inches to several hundred ft. Complex appears to underlie the Agricola Schist-gneiss, but contact relationships between the two have not been ascertained. Smith Mountain may represent an ancient volcanic plug.

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 ([ ]).

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