Diorite and Quartz Diorite

Diorite, gray, fine- to medium-grained, well-foliated, locally trondhjemitic; composition locally grades into granodiorite; quartz diorite, white to gray, fine- to medium-grained, massive to layered, foliated. Mineralogy: plagioclase + quartz + biotite + amphibole + epidote.
State Virginia
Name Diorite and Quartz Diorite
Geologic age Proterozoic
Lithologic constituents
Igneous > Plutonic > Dioritic > Quartz-diorite
Igneous > Plutonic > Dioritic > Diorite
Comments Carolina Slate Belt

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 Charlotte - Halifax