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Geologic units containing quartz latite

Colorado

Intra-ash flow quartz latitic lavas (Phanerozoic | Cenozoic | Tertiary)

Idaho

Dacite to rhyolite (or rhodacite) ignimbrites; Eocene rhyodacitic cauldron complex; east-central Idaho, central Challis volcanic field (Eocene)

Eocene mixed silicic and basaltic volcanic ejecta, flows and reworked debris.

Rhyolite, quartz latite, and latite ignimbrites and flows; Miocene felsic volcanics; Owyhee Plateau; (Miocene)

Miocene silicic flows, tuffs; most common in southwestern Idaho.

Maine

Silurian Rocky Mountain Quartz Latite (Silurian)

Silurian Rocky Mountain Quartz Latite

Nevada

Volcanic sandstone, felsic ash-flow tuffs, rhyolite, and rhyodacite flows (Middle Jurassic to Early Cretaceous)

VOLCANIC SANDSTONE, FELSIC ASH-FLOW TUFFS, RHYOLITE, AND RHYODACITE FLOWS (Upper? Jurassic)-Pony Trail Group of Cortez Mountains, Eureka County

Washington

Eocene-Oligocene volcanic rocks (Eocene-Oligocene)

Predominantly light-green, bedded andesite breccia with interbedded andesite and basalt flows, mudflows, and tuff beds; becomes more tuffaceous near top of unit. Includes tuffaceous and arkosic sandstone, shale, and carbonaceous shale beds in central and southern Cascade Mountians. Rhyodacite and quartz latite flows in northwestern Ferry County.

Wyoming

Dacite and quartz latite intrusive and extrusive igneous rocks (Phanerozoic | Cenozoic | Tertiary | Eocene)

DACITE AND QUARTZ LATITE INTRUSIVE AND EXTRUSIVE IGNEOUS ROCKS (AGE ABOUT 44 Ma)--Light-gray porphyritic rock.