Trujillo Formation

Trujillo Formation
State Texas
Name Trujillo Formation
Geologic age Late Triassic
Lithologic constituents
Major
Sedimentary > Clastic > Mixed-clastic > Conglomerate-sandstone (Bed)
Comments Conglomerate, sandstone, and shale. Conglo sandy, composed of granules and pebbles of quartz, limest., sandst., siltst., minor chert, and frags of petrified wood, massive, gray, brown. Sandst is conglomeratic, contains grains of ls, micaceous, calc. locally, crossbedded to massive. Shale micaceous, thin interbeds, gray and red. Thickness 75 ft.
References

Bureau of Economic Geology, 1983, Tucumcari Sheet, Geologic Atlas of Texas, Bureau of Economic Geology, 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 Hartley - Oldham - Potter