Mafic Volcanic Rocks (VAZmv;0)

State	Virginia
Name	Mafic Volcanic Rocks
Geologic age	Proterozoic Z
Original map label	Zmv
Comments	Carolina Slate Belt From expanded explanation (ref. VA002): Mafic metavolcanic rocks. Greenish-gray to dusky green, fine- to medium-grained, massive to amygdaloidal metabasalt with dark-gray to white, medium-grained mafic lithic and crystal tuff, and minor purple phyllite and metasedimentary rocks. Geophysical signature: linear positive magnetic and negative radiometric anomalies.
Primary rock type	mafic metavolcanic rock
Secondary rock type	phyllite
Other rock types	metasedimentary rock
Lithologic constituents	Major Metamorphic > Metaigneous > Metavolcanic > Metabasalt Minor Metamorphic > Metasedimentary Metamorphic > Metasedimentary > Metaclastic > Phyllite
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/ [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/ [https://www.dmme.virginia.gov/commerce/]
Geographic coverage	Lunenburg - Mecklenburg