Gober Chalk and Roxton Limestone

Gober Chalk and Roxton Limestone
State Texas
Name Gober Chalk and Roxton Limestone
Geologic age Late Cretaceous; Gulfian Series
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone > Chalk (Bed)
Comments Chalk with local Roxton Limestone beds. Gober Chalk argillaceous, brittle, bluish gray; weathers white; thickness 400 +- ft, thins eastward. Roxton Ls sandy, glauconitic, soft, tough, red; marine megafossisl; thickness 10 ft, feathers out west in Fannin Co.
References

Bureau of Economic Geology, 1967, Sherman Sheet, Geologic Atlas of Texas: University of Texas at Austin, Bureau of Economic Geology, 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 Collin - Fannin - Grayson - Hunt - Lamar