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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Holly Corner Gneiss*
  • Modifications:
    • Named
  • Dominant lithology:
    • Gneiss
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Pavlides, Louis, 1980, Revised nomenclature and stratigraphic relationships of the Fredericksburg Complex and Quantico Formation of the Virginia Piedmont: U.S. Geological Survey Professional Paper, 1146, 29 p. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/pp/pp1146]


Summary:

Named as part of Fredericksburg Complex. Named for crossroads of Holly Corner, Salem Church 7.5-min quad, Stafford Co., eastern VA. Present only in a refolded synform in Salem Church quad. Consists of dark-gray to black, fine- to medium-grained, well-foliated, hornblende- and biotite-rich gneiss. Sparse gray to pale-green calc-silicate layers are present in parts of the gneiss. Age is Early Cambrian based on correlation with Chopawamsic Formation, which is dated as Early Cambrian based on discordant zircon ages (Pavlides, 1976). Early Cambrian age is valid if the stratigraphic correlation is correct and zircon ages of Chopawamsic are real ages.

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


Map showing publication footprint
  • Usage in publication:
    • Holly Corner Gneiss
  • Modifications:
    • Overview
  • 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:

Holly Corner Gneiss mapped near Stafford-Spotsylvania Co. border. Fredericksburg Complex not used on map nor mentioned in text. Holly Corner described as dark gray to black, fine- to medium-grained, strongly-foliated hornblende-biotite-rich gneiss. Predominant minerals includes hornblende, plagioclase, biotite, quartz and titanite. Accessories are zircon, epidote, microcline, chlorite. Age according to map symbol is Late Proterozoic and Cambrian.

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 ([ ]).