Moran Formation

Moran Formation
State Texas
Name Moran Formation
Geologic age Permian; Wolfcamp Series
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Claystone (Bed)
Minor
Sedimentary > Clastic > Sandstone (Bed)
Incidental
Sedimentary > Carbonate > Limestone (Bed)
Comments Moran Fm. Mudstone and sandstone, mostly mudst. tan, poorly exposed; fine-grained sheet sandst. in middle part, crossbedded, locally burrowed. "Camp Colorado Limestone" gray to lt brn, coarse-grained, massive, bioclastic, Myalina-bearing lentils, 1 ft thick at base. Thickness of Moran 160-200 ft.
Stratigraphic units Cisco Grp, Bowie Grp (new). (in Brazos River Valley) Dothan limestone, Sedwick limestone. In (Colorado River Valley) (ascending) Watts Creek shale and sandstone, Horse Creek limestone, Santa Anna shale, Sedwick limestone.
References

Bureau of Economic Geology, 1987, Wichita Falls-Lawton Sheet, Geologic Atlas of Texas: University of Texas at Austin, Bureau of Economic Geology, scale 1:250,000.

Plummer, F.B., and Moore, R.C., 1921, Stratigraphy of the Pennsylvanian formations of north-central Texas: University of Texas Bulletin 2132.

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 Brown - Callahan - Coleman - Eastland - Shackelford - Stephens