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High-grade metasedimentary biotite schist, biotite gneiss, and calc-silicate gneiss; Middle Proterozoic northern Belt province near Idaho batholith

Precambrian high-grade metamorphic rock; kyanite-sillimanite calc-silcate bearing schist and gneiss; scapolite common
StateIdaho
NameHigh-grade metasedimentary biotite schist, biotite gneiss, and calc-silicate gneiss; Middle Proterozoic northern Belt province near Idaho batholith
Geologic ageMiddle Proterozoic
Original map labelPC; PC3; Ted
Primary rock typemica schist
Secondary rock typeparagneiss
Other rock typescalc-silicate rock
Lithologic constituents
Major
Metamorphic > Schist (Amphibolite)coarse-grained biotite schist +/- garnet, staurolite, kyanite
Minor
Metamorphic > Gneiss (Amphibolite)biotite gneiss +/- garnet, staurolite, kyanite
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.
Lewis, R.S., Burmester, R.F., McFadden, M.D., Derkey, P.D., and Oblad, J.R., 1999, Digital geologic map of the Wallace 1:100,000 quadrangle, Idaho: U.S. Geological Survey Open-File Report 99-390, with pamphlet 46 p.
Rember, W.C., and Bennett, E.H., 1979, Geologic map of the Hamilton quadrangle, Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, Geologic Map Series, Hamilton 2o quadrangle, 1:250,000 scale.
Lewis, R.S., Burmester, R.F., and Bennett, E.H., 1997, Metasedimentary rocks between the Bitterroot and Atlanta lobes of the Idaho batholith and their relationship to the Belt Supergroup: in Berg, R.B., ed., Belt Symposium III, 1993: Montana Bureau of Mines and Geology, Special Publication 112, p. 130-144.
Burmester, R.F., Lewis, R.S., and Bennett, E.H., 1997, Belt rocks north of the Bitterroot lobe of the Idaho batholith; the southwest basin margin? in Berg, R.B., ed., Belt Symposium III, 1993: Montana Bureau of Mines and Geology, Special Publication 112, p. 145-156.
Geographic coverageClearwater - Idaho - Shoshone

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