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National Geologic Map Database
Geologic Unit: Patterson
Map showing publication footprint
  • Usage in publication:
    • Patterson limestone member
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
    • Dolomite
  • AAPG geologic province:
    • Appalachian basin
Publication:

Butts, Charles, 1933, Geologic map of the Appalachian Valley of Virginia with explanatory text: Virginia Geological Survey Bulletin, no. 42, 56 p.


Summary:

Named the Patterson limestone member of the Shady dolomite for Patterson, Wythe Co., VA. Unit is the basal part of the Shady and contains considerable amount of limestone. The Patterson shows up on columnar section on geologic map of Appalachian Valley of Virginia and is of Early Cambrian age.

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


Map showing publication footprint
  • Usage in publication:
    • Patterson limestone member
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Appalachian basin
Publication:

Currier, L.W., 1935, Zinc and lead region of southwestern Virginia: Virginia Geological Survey Bulletin, no. 43, 122 p.


Summary:

The Patterson limestone member of the Shady dolomite consists of chiefly dark gray, dense limestone and dolomite, both with characteristic type of "ribbon" structure; ribbon limestone and dolomite is gradational in all directions. The base of the unit contains transition beds of dark gray sandy dolomite or light gray crystalline dolomite. Thickness is 700 to 800 feet. Unit is the basal member of the Shady, conformably overlies the Erwin quartzite and conformably underlies the saccharoidal dolomite member of Shady dolomite. The Patterson is of Early Cambrian age.

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


Map showing publication footprint
  • Usage in publication:
    • Patterson Member*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Appalachian basin
Publication:

Reinhardt, Juergen, 1977, Cambrian off-shelf sedimentation, central Appalachians, IN Cook, H.E., and Enos, P., eds., Deep-water carbonate environments: Society of Economic Paleontologists and Mineralogists Special Publication, Symposium, Dallas, TX, April 8-9, 1975, no. 25, p. 82-112.


Summary:

The Patterson Member, the lowest member of the Shady Dolomite in VA, is 300 meters thick, and overlies the Erwin Formation and underlies the Austinville Member of the Shady. The Patterson is of Early Cambrian age.

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


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).