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Granitoid intrusions, metasedimentary rocks, and migmatite, undivided; Cretaceous intrusions and Proterozoic host rocks, undivided; northern and central Idaho

Mixed, highly altered and migmatitic rocks; derived from imbrication and dynamic events
StateIdaho
NameGranitoid intrusions, metasedimentary rocks, and migmatite, undivided; Cretaceous intrusions and Proterozoic host rocks, undivided; northern and central Idaho
Geologic ageCretaceous to Early Proterozoic
Original map labelmig, pKi, Km
CommentsKXmix consists of mixed Cretaceous (K) granitoid intrusions and Proterozoic (ZX) metasedimentary rocks around the margins of the Kaniksu and Idaho batholiths. Much KXmix is migmatitic ID020, but some is agmititic, especially along the eastern margin of the Atlanta lobe of the Idaho batholith.
Primary rock typegranitoid
Secondary rock typemetasedimentary rock
Other rock typesmigmatite
Lithologic constituents
Major
Metamorphic > Migmatitemetasedimentary rocks injected by granitoids
Metamorphic > Metasedimentary (Amphibolite)relatively small inclusions or septa of metasedimentary rocks
Igneous > Plutonic > Granitic (Dike or sill)relatively small granitoid intrusions near margins of batholiths
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.
Miller, F.K., Burmester, R.F., Miller, D.M., Powell, R.E., and Derkey, P.D., 1999, Digital geologic map of the Sandpoint 1o x 2o quadrangle, Washington, Idaho, and Montana: U.S. Geological Survey Open-File Report OF 99-144, scale 1:250,000 with report, 71 p.
Lund, Karen, in press, Geology of the Payette National Forest, Valley, Idaho, Washington and Adams counties, Idaho: U.S. Geological Survey Professional Paper 1666, scale 1:100,000.
Geographic coverageBonner - Idaho - Valley

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