Dalecarlia Instrusive Suite (VAOCAd;0)

State	Virginia
Name	Dalecarlia Instrusive Suite
Geologic age	Cambrian-Ordovician
Original map label	O[d
Comments	Western Piedmont, Northern. From expanded explanation (ref. VA002): 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.
Primary rock type	monzonite
Secondary rock type	granodiorite
Other rock types
Lithologic constituents	Major Igneous > Plutonic > Syenitic > Monzonite Minor Igneous > Plutonic > Granitic > Granodiorite
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	Fairfax