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

Cooper, B.N., and Cooper, G.A., 1946, Lower Middle Ordovician stratigraphy of the Shenandoah Valley, Virginia: Geological Society of America Bulletin, v. 57, no. 1, p. 35-113.


Summary:

Named St. Luke member of the Edinburg formation for St. Luke, Shenandoah Co., VA. Unit is topmost division of the Edinburg in the Shenandoah Valley. Consists of rather pure, dove-gray limestone above the NIDULITES-LAMBEOPHYLLUM zone and below the REUSCHELLA "EDSONI" beds that characterize the basal Oranda formation. Thickness of the St. Luke member is 90 feet at the type locality. Unit is of Middle Ordovician age.

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


Map showing publication footprint
  • Usage in publication:
    • St. Luke Member
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Appalachian basin
Publication:

Young, R.S., and Rader, E.K., 1974, Geology of the Woodstock, Wolf Gap, Conicville, and Edinburg quadrangles, Virginia: Virginia Division of Mineral Resources Report of Investigations, no. 35, 69 p.


Summary:

The St. Luke Member of the Edinburg Formation is a dove-gray, fine-grained limestone. It is the top member of the formation. This unit closely resembles the New Market Limestone, except for local coarse calcarenites and cross-bedded coquinites.

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


Map showing publication footprint
  • Usage in publication:
    • St. Luke Member
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Appalachian basin
Publication:

Rader, E.K., and Biggs, T.H., 1976, Geology of the Strasburg and Toms Brook quadrangles, Virginia: Virginia Division of Mineral Resources Report of Investigations, no. 45, 104 p., (incl. geologic maps, scale 1:24,000)


Summary:

The St. Luke Member of the Edinburg Formation is a gray, medium- to coarse-grained limestone and dove-gray, micritic limestone. Small sinkholes are common in the St. Luke and are a distinctive marker where outcrops are sparse.

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 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 ([ ]).