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Geologic Unit: Arch
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Map showing publication footprint
  • Usage in publication:
    • Arch marble
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Marble
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Brown, W.R., 1951, James River synclinorium and related structures in the western Virginia Piedmont [abs.]: Geological Society of America Bulletin, v. 62, no. 12, pt. 2, p. 1547.


Summary:

Arch marble. Named in sequence of units mapped in James River synclinorium. Younger than Joshua schist (new) and older than Pelier schist (new). [Age is early Paleozoic(?).]

Source: US geologic names lexicon (USGS Bull. 1200, p. 126).


Map showing publication footprint
  • Usage in publication:
    • Arch marble
    • Arch formation
  • Modifications:
    • Principal reference
    • Revised
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Brown, W.R., 1953, Structural framework and mineral resources of the Virginia Piedmont, IN McGrain, P., ed., Proceedings of the southeastern mineral symposium, 1950: Kentucky Geological Survey Special Publication, 9th series, no. 1, p. 88-111.


Summary:

Pg. 91 (fig. 1), 93. Arch marble or Arch formation. Fine-grained, blue-gray micaceous marble, locally arenaceous. Thickness about 400 feet. Included in Evington group (new). Type locality designated. [Age is early Paleozoic(?).]
Type locality: vicinity of The Arch on Norfolk and Western RR, 1 mi east of Six Mile Station, Campbell Co., south-central VA.

Source: US geologic names lexicon (USGS Bull. 1200, p. 126).


Map showing publication footprint
  • Usage in publication:
    • Arch marble
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Espenshade, G.H., 1954, Geology and mineral deposits of the James River-Roanoke River manganese district, Virginia: U.S. Geological Survey Bulletin, 1008, 155 p.


Summary:

Arch marble and Joshua schist of Brown (1951; 1953) replaced with Archer Creek formation.

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


Map showing publication footprint
  • Usage in publication:
    • Arch Marble
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Rader, E.K., and Evans, N.H., 1993, Geologic map of Virginia; expanded explanation: Virginia Division of Mineral Resources, 80 p.


Summary:

Arch Marble of Brown (1953; 1958) and Archer Creek Formation of Espenshade (1954) not used. Rocks are included within the banded marble unit of Alligator Back Formation on the State map. Alligator Back is assigned to the Lynchburg Group. Evington Group not used.

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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