Mafic phaneritic intrusive rocks (NVTmi;0)

Mafic phaneritic intrusive rocks

Tertiary mafic intrusive rocks are widely scattered across Nevada north of Clark County. They include rocks mapped as dacite and rhyodacite, diorite, quartz latite, and numerous undivided intrusive rocks on the county maps.

State	Nevada
Name	Mafic phaneritic intrusive rocks
Geologic age	Miocene to middle Eocene
Lithologic constituents	Major Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-quartz-latite Igneous > Plutonic > Dioritic > Diorite Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-dacitedacite and rhyodacite Minor Igneous > Plutonicnumerous undivided 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 - Esmeralda - Eureka - Humboldt - Lander - Lincoln - Lyon - Mineral - Nye - Pershing - Storey - Washoe - White Pine