Lenox Hills and Neal Ranch Formations, undivided

Lenox Hills and Neal Ranch Formations, undivided
State Texas
Name Lenox Hills and Neal Ranch Formations, undivided
Geologic age Permian; Wolfcamp Series
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Conglomerate (Bed)
Minor
Sedimentary > Carbonate > Limestone (Bed)
Incidental
Sedimentary > Carbonate > Dolostone (Bed)
Comments Crops out on lower, southeast flanks of Dugout, Leonard, and Glass Mountains, and around Wolf Camp Hills, 15 km west to 30 km northeast of Marathon, Brewster County, Texas. Lenox Hills Fm conglo., shale, limest., and dolomite, varying widely in proportion fr. place to place. 276 ft thick in type section. Neal Ranch Fm 412-547 ft of dk gray shale laternating with thin or massive beds of limestone. Thins eastward. 16 or 17 cyclothems topped by calcarenite followed downward by med to lt gray shale. Fetid shale at base; thickness of Neal Ranch 300 ft at type section.
References

Ross, C.A., 1959, The Wolfcamp Series (Permian) and new species of fusulinids, Glass Mountains, Texas: Journal of the Washington Academy of Sciences, v. 49, no. 9, p. 299-316.

Cooper, G.A. and Grant, R.E., 1966, Permian rock units in the Glass Mountains, west Texas: Geological Survey Bulletin 1244-E.

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, 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 - Pecos