Gober Chalk and Roxton Limestone (TXKgc;0)

State	Texas
Name	Gober Chalk and Roxton Limestone
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous-Late [Gulfian]
Original map label	Kgc
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.
Primary rock type	limestone
Secondary rock type	limestone
Other rock types
Lithologic constituents	Major Sedimentary > Carbonate > Limestone > Chalk (Bed)Chalk.
Map references	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
Unit 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.
Geographic coverage	Collin - Fannin - Grayson - Hunt - Lamar