Upper and Middle Ordovician Formations Undivided

Includes: Oun, Ous, Ou, Om, Okpl, Oeln, Oml, Ols.
State Virginia
Name Upper and Middle Ordovician Formations Undivided
Geologic age Ordovician
Lithologic constituents
Comments Undivided; Appalachian Plateaus and Valley and Ridge
References

Virginia Division of Mineral Resources, 1993, Geologic Map of Virginia: Virginia Division of Mineral Resources, scale 1:500,000.

Virginia Division of Mineral Resources, 2003, Digital Representation of the 1993 Geologic Map of Virginia, Publication 174, CD ROM (ISO-9660) contains image file, expanded explanation in pdf, and ESRI shapefiles, scale 1:500,000.

NGMDB product
Counties Clarke - Lee - Russell - Scott - Shenandoah