Skip to main content

Simsboro Formation

Simsboro Formation
State Texas
Name Simsboro Formation
Geologic age Phanerozoic | Cenozoic | Tertiary | Paleocene
Comments Mostly sand, some mudstone, clay, and mudstone conglomerate. thickness as much as 300 ft.
Primary rock type sand
Secondary rock type mudstone
Other rock types
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > Sand (Bed)
Minor
Sedimentary > Clastic > Mudstone > Claystone (Bed)
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, 1974, Austin Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000.
Counties Bastrop - Falls - Freestone - Lee - Limestone - Milam - Robertson