Interlayered Mafic and Felsic Volcanic Rocks (VAZlv;0)

State	Virginia
Name	Interlayered Mafic and Felsic Volcanic Rocks
Geologic age	Proterozoic Z
Original map label	Zlv
Comments	Carolina Slate Belt From expanded explanation (ref. VA002): Layered mafic to felsic metavolcanic rocks. Volcanogenic sequence includes felsic pyroclastic and volcaniclastic rocks with intercalated mafic pyroclastic and amygdaloidal flows and phyllitic metasedimentary interbeds. Felsic rocks are crystal, lithic, and vitric tuff and tuff breccia ranging in composition from rhyolite to dacite. Mafic rocks consist of mafic lithic crystal and vitric tuff, with associated amygdaloidal pyroclastic rocks, and greenstone metabasalt.
Primary rock type	mafic metavolcanic rock
Secondary rock type	felsic metavolcanic rock
Other rock types	metasedimentary rock
Lithologic constituents	Major Metamorphic > Metaigneous > Metavolcanicfelsic and mafic metavolcanic rocks Minor Metamorphic > Metasedimentaryphyllitic metsedimentary interbeds
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 - Nottoway