Plutonic rocks (WYWVg;0)

PLUTONIC ROCKS. Wind River Range--Largely granite gneiss; contains diorite and quartz diorite facies. Bighorn Mountains--Quartz diorite to quartz monzonite. Age 2,900+ Ma.

State	Wyoming
Name	Plutonic rocks
Geologic age	Archean
Original map label	WVg
Primary rock type	granitoid
Secondary rock type
Other rock types
Lithologic constituents	Major Igneous > Plutonic > Syenitic > Quartz-monzonite Igneous > Plutonic > Dioritic > Quartz-diorite Metamorphic > Gneiss Igneous > Plutonic > Dioritic > Diorite
Map references	Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey. [http://pubs.er.usgs.gov/publication/ofr83802]
Unit references	Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey. [http://pubs.er.usgs.gov/publication/ofr83802]
Geographic coverage	Big Horn - Fremont - Johnson - Sheridan - Sublette