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younger volcanic rocks of Davis Mountains area including Brooks Mountain, Goat Canyon, Medley, Barrel Springs, Wild Cherry, Eppenaurer Ranch, Mount Locke, and Merrill Formations

younger volcanic rocks of Davis Mountains area including Brooks Mountain, Goat Canyon, Medley, Barrel Springs, Wild Cherry, Eppenaurer Ranch, Mount Locke, and Merrill Formations
StateTexas
Nameyounger volcanic rocks of Davis Mountains area including Brooks Mountain, Goat Canyon, Medley, Barrel Springs, Wild Cherry, Eppenaurer Ranch, Mount Locke, and Merrill Formations
Geologic agePhanerozoic | Cenozoic | Tertiary | Oligocene-Early
Original map labelOd
Commentsporphyritic trachyte, latite porphyry, vitric tuff, porphyritic rhyolite, basalt, quartz trachyite, and foliated vitrophyre.
Primary rock typetrachyte
Secondary rock typerhyolite
Other rock typestuff; latite
Lithologic constituents
Major
Igneous > Volcanic > Felsic-volcanic > Trachyte
Minor
Igneous > Volcanic > Felsic-volcanic > Rhyolite
Incidental
Igneous > Volcanic > Mafic-volcanic > Basalt
Igneous > Volcanic > Felsic-volcanic > Latite
Map references
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
Unit references
Bureau of Economic Geology, 1982, Fort Stockton Sheet, Geologic Atlas of Texas, University of Texas at Austin, scale 1:250,000.
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.
Henry, C.D. and McDowell, F.W., 1986, Geochronology of magmatism in the Tertiary volcanic field, Trans-Pecos, Texas, in Price, J.G. and others, eds., Igneous geology of Trans-Pecos, Texas: The University of Texas at Austin, Bureau of Economic Geology Gui
Henry, C.D., McDowell, F.W., Price, J.G., and Smyth, R.E., 1986, Geochronology of Tertiary igneous rocks, Trans-Pecos, Texas, in Price, J.G. and others, eds., Igneous geology of Trans-Pecos, Texas: The University of Texas at Austin, Bureau of Economic Ge
Geographic coverageJeff Davis - Pecos - Presidio - Reeves

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