Jones Basalt

Jones Basalt
State Texas
Name Jones Basalt
Geologic age Oligocene
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basalt
Comments in central and northern and southern Davis Mtns, Jeff Davis Co., north and around Marfa, TX. previous mapped as Petan Basalt - -mafic flows, trachyandesite porphyry, dk. greenish gray to brownish gray; thickness as much as 510 ft to west on Marfa Sheet (1979)
Stratigraphic units Bell Valley Andesite, Jones Formation of southern Davis Mountains
References

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 Geology Circular 86-2, 34 p.

Bureau of Economic Geology, 1979, Marfa Sheet, Geologic Atlas of Texas: Bureau of Economic Geology and 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 Brewster - Culberson - Jeff Davis - Presidio