Orthogneiss, mica schist, and amphibolite; Early Proterozoic to Late Archean metamorphic rocks; south-central Idaho; Albion Range metamorphic core complex (IDXWsmh;0)

State	Idaho
Name	Orthogneiss, mica schist, and amphibolite; Early Proterozoic to Late Archean metamorphic rocks; south-central Idaho; Albion Range metamorphic core complex
Geologic age	Early Proterozoic to Late Archean
Original map label	PC; mig
Comments	XWm is mostly gneissic rock of granitoid composition (2.4 to 2.7 Ga), with subordinate muscovite-biotite schist, and plagioclase-hornblende amphibolite (2 Ga) (ID141)
Primary rock type	orthogneiss
Secondary rock type	mica schist
Other rock types	amphibolite
Lithologic constituents	Major Igneous > Plutonic > Granitic (Pluton)granitoid orthogneiss (2.4 to 2.7 Ga) Incidental Metamorphic > Amphibolite (Amphibolite)metamorphosed mafic dikes (2 Ga) Metamorphic > Schist (Amphibolite)muscovite-biotite schist
Map references	Bond, J.G., Kauffman, J.D., Miller, D.A., and Venkatakrishnan, Ramesh, 1978, Geologic map of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, with contributions from U.S. Geological Survey, scale 1:500,000.
Unit references	Bond, J.G., Kauffman, J.D., Miller, D.A., and Venkatakrishnan, Ramesh, 1978, Geologic map of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, with contributions from U.S. Geological Survey, scale 1:500,000. Rember, W.C., and Bennett, E.H., 1979, Geologic map of the Pocatello quadrangle, Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, Geologic Map Series, Pocatello 2o quadrangle, scale 1:250,000. Armstrong, R.L., Smith, J.F., Jr., Covington, H.R., and Williams, P.L., 1978, Preliminary geologic map of the west half of the Pocatello 1o x 2o quadrangle, Idaho: U.S. Geological Survey Open-File Report 78-533, 1:250,000 scale. [http://pubs.er.usgs.gov/publication/ofr78533] Armstrong, R.L., 1968, Mantled gneiss domes in the Albion Range, southern Idaho: Geological Society of America Bulletin, v. 79, no. 10, p. 1295-1314.
Geographic coverage	Cassia