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Mineral Resources > Online Spatial Data > Geology > by state

Geologic units containing keratophyre

Idaho

Metavolcanic and metasedimentary rocks; Jurassic greenschist-facies metamorphic rocks; western Idaho, Blue Mountains island-arc complex (Jurassic)

Jurassic mixed marine detrital and volcanic rocks of western Idaho.

Metavolcanic and metasedimentary rocks; Middle to Lower Triassic greenschist-facies metamorphic rocks; western Idaho, Blue Mountains island-arc complex (Middle and Early Triassic)

Middle and Lower Triassic metabasalt and submarine volcaniclastics of western Idaho

Washington

Carboniferous and Permian volcanic rocks (Devonian to Permian; Triassic in Asotin County)

Predominantly altered andesite, basalt, and diabase with interbedded chert and argillite; includes some tuff, greenstone, and spilitic volcanic rocks; northern Cascade Mountains. Mostly schistose greenstone, some agglomerate, and rarely lapilli; includes minor beds of limestone with associated argillite and graywacke; northwestern Stevens County.

Pre-Middle Jurassic volcanic rocks, undivided (Early Cretaceous-Late Jurassic)

Predominantly greenstone and spilitic volcanic rocks; includes some slate, argillite, and graywacke.