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MAP

Topo

Rock Formations

Measure

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Topo

Ecoregions

Public Lands

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BASEMAPS

Default Weather

Temperature

Smoke

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WEATHER

Younger andesite and intermediate flows and breccias (NVTa3;0)

Geologic Formation in NV, CA, AZ

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Lithology

Dacite

Andesite

Geologic Age

Miocene (23.03 Ma – 5.33 Ma ago)

Geologic Unit Label

Ta3

Includes some rocks mapped as the Kate Peak and Alta Formations on the Washoe South map; Wahmonie and Salyer Formations on the Nye South map; Gilbert Andesite on the Esmeralda map; pyroxene, hornblende phenoandesite, and phenodacite on the Elko map; and other unnamed units. It corresponds to the unit Ta3 on the 1978 State map. It is present everywhere except Eureka and White Pine Counties.

— USGS

Taxonomy

Classified As

Geologic Formation