Grayson Marl and Main Street Limestone, undivided

Grayson Marl and Main Street Limestone, undivided
State Texas
Name Grayson Marl and Main Street Limestone, undivided
Geologic age Early Late Cretaceous and Late Early Cretaceous
Lithologic constituents
Major
Sedimentary > Carbonate > Marlstone
Sedimentary > Carbonate > Limestone
Comments Grayson Marl mostly marl, lt greenish-gray to med. gray, near top some thin interbeds of limest., nodular, sl. sandy, gray, fossiliferous; weathers grayish-yellow; thickness 15-60 ft. Main Street Limestone, thick ls beds, coarse grained, hard, interbedded with thin marl beds; yell-gray, white, brown; thikcness 10-20 ft.
Stratigraphic units Bennington Limestone in Oklahoma
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 Bell - Bosque - Cooke - Coryell - Denton - Grayson - Hill - Johnson - McLennan - Tarrant