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Geologic Unit: Snowden
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Map showing publication footprint
  • Usage in publication:
    • Snowden member
  • Modifications:
    • Named
  • Dominant lithology:
    • Quartzite
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Bloomer, R.O., and Werner, H.J., 1955, Geology of the Blue Ridge region in central Virginia: Geological Society of America Bulletin, v. 66, no. 5, p. 579-606.


Summary:

Snowden member named as part of Harpers formation. Consists of quartzite. Occurs 100 to 300 ft above base of Harpers. Thickness is 50 ft. Age is Early Cambrian.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Snowden Member*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Brown, C.E., and Spencer, E.W., 1981, Geologic map of the James River Face Wilderness Area, Bedford and Rockbridge Counties, Virginia: U.S. Geological Survey Miscellaneous Field Studies Map, MF-1337-A, 1 sheet, scale 1:24,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_6973.htm]


Summary:

Age of Snowden Member modified to Early Cambrian(?)

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Snowden Member*
  • Modifications:
    • Biostratigraphic dating
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Hack, J.T., 1982, Physiographic divisions and differential uplift in the Piedmont and Blue Ridge: U.S. Geological Survey Professional Paper, 1265, 49 p. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/pp/pp1265]


Summary:

Age of Snowden Member is Early Cambrian(?) based on scolithus tubes.

Source: GNU records (USGS DDS-6; Reston GNULEX).


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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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