Mafic phaneritic intrusive rocks (NVTJmi;0)

Mafic phaneritic intrusive rocks

Poorly dated mafic intrusions are concentrated in two regions of Nevada, northwestern and west-central to southwestern parts of the State. They crop out in northern Nye, Mineral, Esmeralda, Eureka, Humboldt, and Lander Counties, and include rocks described on the county maps as dioritic to andesitic rocks, diorite and related rocks, and granodiorite.

State	Nevada
Name	Mafic phaneritic intrusive rocks
Geologic age	Miocene (?) to Jurassic (?)
Lithologic constituents	Major Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-andesite Igneous > Plutonic > Dioritic > Diorite Igneous > Plutonic > Granitic > Granodiorite
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	Douglas - Esmeralda - Eureka - Humboldt - Lander - Lyon - Mineral - Nye

Mafic phaneritic 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.