Silurian and Upper Ordovician Formations Undivided (VASOz;0)

State	Virginia
Name	Silurian and Upper Ordovician Formations Undivided
Geologic age	Ordovician-Silurian
Original map label	SOz
Comments	Undivided; Appalachian Plateaus and Valley and Ridge
Primary rock type	sandstone
Secondary rock type	shale
Other rock types	siltstone; limestone; mudstone; quartzite; arenite
Lithologic constituents
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", 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	Botetourt - Buchanan - Lee - Montgomery - Russell - Scott - Shenandoah - Tazewell