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Granite gneiss

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Layered to massive, locally migmatitic; metasedimentary and metavolcanic rocks locally common. Includes Webb Canyon Gneiss in Teton Range.
State Wyoming
Name Granite gneiss
Geologic age Late Archean
Lithologic constituents
Major
Metamorphic > Gneiss
References

Love, J.D. and Christiansen, A.C., 1985, Geologic Map of Wyoming: U.S. Geological Survey, scale 1:500,000.

https://pubs.er.usgs.gov/publication/70046739
NGMDB product
Counties Albany - Carbon - Converse - Fremont - Natrona - Park - Platte - Sublette - Teton