Intrusive rocks (NVTi;0)

State	Nevada
Name	Intrusive rocks
Geologic age	Late Cretaceous to Middle Miocene
Original map label	Ti
Comments	This part of the map is based on 45-yr old mapping. The polygons include several late Cretaceous muscovite-bearing granites, as well as Tertiary plutons that range from granite to diorite. The topology of the polygons is not amenable to solution of this problem.
Primary rock type	alkali-granite (alaskite)
Secondary rock type	granite
Other rock types	granodiorite; tonalite; diorite; peraluminous granite
Lithologic constituents	Minor Igneous > Plutonic > Granitic > Alkali-feldspar-granite > Alkali-granite (Pluton) Igneous > Plutonic > Granitic > Granite (Pluton) Incidental Igneous > Plutonic > Dioritic > Diorite (Pluton) Igneous > Plutonic > Granitic > Tonalite (Stock or pipe) Igneous > Plutonic > Granitic > Tonalite (Dike or sill) Igneous > Plutonic > Granitic > Tonalite (Pluton) Igneous > Plutonic > Granitic > Granite (Stock or pipe) Igneous > Plutonic > Granitic > Granodiorite (Stock or pipe) Igneous > Plutonic > Granitic > Granodiorite (Dike or sill) Igneous > Plutonic > Granitic > Granodiorite (Pluton) Igneous > Plutonic > Granitic > Alkali-feldspar-granite > Alkali-granite (Dike or sill) Igneous > Plutonic > Granitic > Alkali-feldspar-granite > Alkali-granite (Stock or pipe) Igneous > Plutonic > Granitic > Granite (Dike or sill)
Map references	Stewart, J.H., and Carlson, J.E., 1978, Geologic Map of Nevada: U.S. Geological Survey and Nevada Bureau of Mines and Geology, 1:500,000 (not part of any formal series, printed and distributed by the U.S. Geological Survey, G75163, reprinted, 1981, G81386).
Unit references	Stewart, J.H., and Carlson, J.E., 1978, Geologic Map of Nevada: U.S. Geological Survey and Nevada Bureau of Mines and Geology, 1:500,000 (not part of any formal series, printed and distributed by the U.S. Geological Survey, G75163, reprinted, 1981, G81386). Stewart, J. H., 1980, Geology of Nevada: A discussion to accompany the Geologic Map of Nevada: Nevada Bureau of Mines and Geology Special Publication 4.
Geographic coverage	Clark