Dalecarlia Instrusive Suite

Dalecarlia Intrusive Suite (Drake and Flemming, in press). Medium- to coarse-grained, massive to well-foliated, biotite monzogranite and lesser granodiorite; locally contains plagioclase phenocrysts. Mapped bodies contain widespread leucocratic biotite-muscovite monzogranite.
State Virginia
Name Dalecarlia Instrusive Suite
Geologic age Cambrian-Ordovician
Lithologic constituents
Major
Igneous > Plutonic > Syenitic > Monzonite
Minor
Igneous > Plutonic > Granitic > Granodiorite
Comments Western Piedmont (Northern)
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 Fairfax