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Quartzofeldspathic Gneiss

Quartzofeldspathic gneiss
StateVirginia
NameQuartzofeldspathic Gneiss
Geologic ageProterozoic Y-Pennsylvanian
Original map labelPzYpm
CommentsEastern Piedmont From expanded explanation (ref. VA002): Quartzofeldspathic gneiss (Bobyarchick and others, 1981). Light-gray, fine- to coarse-grained, foliated, layered muscovitie-bearing quartzofeldspathic gneiss; contains intercalated quartz-muscovite schist. Mineralogy: quartz + plagioclase + microcline + garnet + muscovite + biotite.
Primary rock typefelsic gneiss
Secondary rock type
Other rock types
Lithologic constituents
Major
Metamorphic > Gneissfelsic gneiss
Map references
Digital Representation of the 1993 Geologic Map of Virginia", 2003, CD ROM (ISO-9660) contains image file, expanded explanation in pdf, and ESRI shapefiles, viewing software not included. This is a digital version of "Geologic Map of Virginia" published in 1993. Available from: https://www.dmme.virginia.gov/commerce/
Unit references
Virginia Division of Mineral Resources, 1993, Geologic Map of Virginia: Virginia Division of Mineral Resources, scale 1:500,000
Digital Representation of the 1993 Geologic Map of Virginia - expanded explanation: 2003, Commonwealth of Virginia, Department of Mines, Minerals, and Energy, Divsion of Mineral Resources, Publication 147, 85 pp
Digital Representation of the 1993 Geologic Map of Virginia", 2003, CD ROM (ISO-9660) contains image file, expanded explanation in pdf, and ESRI shapefiles, viewing software not included. This is a digital version of "Geologic Map of Virginia" published in 1993. Available from: https://www.dmme.virginia.gov/commerce/
Geographic coverageAmelia - Caroline - Lunenburg - Nottoway - Spotsylvania

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URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=VAYPApm;0
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