Intermediate rhyolitic flows and shallow intrusive rocks (NVTr2;0)

Intermediate rhyolitic flows and shallow intrusive rocks

Includes rocks mapped as the rhyolite of Big Sand Springs Valley on the Nye North map, the Sandstorm Formation in Esmeralda County, rhyolite flow domes in the Sheep Creek Range in Lander County, and other units. It corresponds to unit Tr2 on the 1978 State map. It is present in Nye, Lincoln, Churchill, Esmeralda, Eureka, Mineral, Elko, Humboldt, and Lander Counties.

State	Nevada
Name	Intermediate rhyolitic flows and shallow intrusive rocks
Geologic age	lower Miocene and Oligocene
Lithologic constituents	Major Igneous > Volcanic > Felsic-volcanic > Rhyolite (Flow, Dome) Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-rhyolite (Dike or sill)shallow intrusive rocks
References	Crafford, A.E.J., 2007, Geologic Map of Nevada: U.S. Geological Survey Data Series 249, 1 CD-ROM, 46 p., 1 plate; Scale 1:250,000. Extended unit descriptions taken from pamphlet that accompanies geologic data/map. https://pubs.er.usgs.gov/publication/ds249
NGMDB product	NGMDB product page for 81584
Counties	Churchill - Elko - Esmeralda - Eureka - Humboldt - Lander - Lincoln - Mineral - Nye - Pershing

Intermediate rhyolitic flows and shallow intrusive rocks

Crafford, A.E.J., 2007, Geologic Map of Nevada: U.S. Geological Survey Data Series 249, 1 CD-ROM, 46 p., 1 plate; Scale 1:250,000. Extended unit descriptions taken from pamphlet that accompanies geologic data/map.