Carrizo Mountain Group showing metasedimentary rocks

Carrizo Mountain Group showing metasedimentary rocks
State Texas
Name Carrizo Mountain Group showing metasedimentary rocks
Geologic age preCambrian (Proterozoic)
Lithologic constituents
Major
Metamorphic > Schistlocally slaty, blue-gray
Minor
Sedimentary > Carbonate > Limestonelocally slaty, blue-gray
Metamorphic > Metasedimentary > Metaclastic > Quartzitefeldspathic meta-quartzite and meta-arkose in Carrizo Mountains, Eagle Mountains, and in Van Horn Mountains and Wylie Mountain area (include lenses of biotite schist and amphibolite)
Incidental
Metamorphic > Metasedimentary > Metaclastic > Phyllitelocally slaty, blue-gray
Comments comprises many rock types including limestone, chlorite-quartz-albite-clacite rock, phyllite, feldspathic meta-quartzite and meta-arkose, chlorite-mica schist, and interlayered sericite schist(including lenses of biotite schist and amphibolite), metaquartzite, chert, phyllite, slate, and limestone
References

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 Culberson - Hudspeth