Miocene intrusive rocks

Miocene intrusive rocks
State Texas
Name Miocene intrusive rocks
Geologic age Miocene
Lithologic constituents
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basalt (Dike or sill)
Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-rhyolite (Dike or sill)
Igneous > Plutonic > Gabbroic > Gabbro (Stock or pipe)
Igneous > Plutonic > Granitic > Granodiorite (Stock or pipe)
Comments large intrusion of alkali basalt at Black Hills, southern Presidio County, TX in Bofecillos Mountains (Henry and others, 1998, p. 44)

Bureau of Economic Geology, 1968, Van Horn-El Paso Sheet, Geologic Atlas of Texas: Bureau of Economic Geology, The University of Texas at Austin, scale 1:250,000.

Bureau of Economic Geology, 1992, Geologic Map of Texas: University of Texas at Austin, Virgil E. Barnes, project supervisor, Hartmann, B.M. and Scranton, D.F., cartography, scale 1:500,000.

NGMDB product
Counties Presidio