Manning Formation

Manning Formation
State Texas
Name Manning Formation
Geologic age Eocene
Lithologic constituents
Sedimentary > Clastic > Mixed-clastic > Sandstone-mudstone (Bed)
Sedimentary > Coal > Lignite (Bed)
Comments clay and sandstone, chiefly clay, massive to laminated, sl. carbonaceous or lignitic, bentonitic, tuffaceous, thin interbeds of tuffaceous siltst; sandst in upper part, v. fine to fine grained, silty, well bedded to crossbedded; in lower part tuffaceous, contains fossil wood; thickness 250-350 ft. In East Texas and Gulf Coast to Rio Grande: Quartz sand, clay, and lignite. Sand, fine to med. grained, lignitic, light gray, weathers med. gray. Clay, sandy, lignitic, brn-gray; weathers pal brn-gray. Lignite brnish-black, weathers brn-gray. Fossil wood abdt. Thickness 200 ft.
Stratigraphic units Plum Bentonite included (Seguin Sheet, 1974)

Bureau of Economic Geology, 1967, Palestine Sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, 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 Angelina - Atascosa - Brazos - Burleson - Fayette - Gonzales - Grimes - Houston - Karnes - Lee - McMullen - Polk - Trinity - Tyler - Walker - Washington - Wilson