| 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 |