Beaumont Formation, areas predominantly sand (TXQbs;0)

State	Texas
Name	Beaumont Formation, areas predominantly sand
Geologic age	Phanerozoic \| Cenozoic \| Quaternary \| Pleistocene-Late
Original map label	Qbs
Comments	(from Moore and Wermund, 1993a, 1993b) Yellowish- to brownish-gray, locally reddish orange, v. fine to fine quartz sand, silt, and minor fine gravel, intermixed and interbedded. Includes stream channel, point-bar, cravasse-splay, and natural levee ridge deposits, and clayey fill in abandoned channels. Forms poorly defined meander-belt ridges and pimple mounds aligned approx. normal to coast and 1-2 m higher than surround interdistributary silt and clay. Channel fill is dk-brn to brnish-dark-gray, laminated clay and silt, organic -rich. Includes marine delta-front sand, lagoonal clay, and near-shore marine sand beneath and landward of bays along the coast. Interfingers with the interdistributary facies of Beuamont Fm. and rests disconformably on Lissie Fm. Thickness 3-10 m on outcrop; thickens in southeastward in subsurface to more than 100 m.
Primary rock type	sand
Secondary rock type	silt
Other rock types	clay or mud; gravel
Lithologic constituents	Major Unconsolidated > Coarse-detrital > Sand (Bed) Minor Unconsolidated > Fine-detrital (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	Moore, D.W. and Wermund, E.G., Jr., 1993b, Quaternary geologic map of the Monterrey 4 x 6 degree quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NG-14), scale 1:1,000,000. [http://pubs.er.usgs.gov/publication/i1420(NG14)] Moore, D.W. and Wermund, E.G., Jr., 1993a, Quaternary geologic map of the Austin 4 x 6 degree quadrangle, United States: U.S. Geological Survey Miscellaneous Investigations Series Map I-1420 (NH-14), scale 1:1,000,000. [http://pubs.er.usgs.gov/publication/i1420(NH14)] Bureau of Economic Geology, 1975, Corpus Christi Sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000. Bureau of Economic Geology, 1975, Beeville-Bay City Sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000. Bureau of Economic Geology, 1982, Houston Sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000.
Geographic coverage	Aransas - Austin - Bee - Brazoria - Calhoun - Cameron - Chambers - Colorado - Fort Bend - Galveston - Hardin - Harris - Hidalgo - Houston - Jackson - Jasper - Jefferson - Jim Wells - Kleberg - Liberty - Live Oak - Matagorda - Montgomery - Newton - Nueces - Orange - Polk - Refugio - San Jacinto - San Patricio - Trinity - Tyler - Victoria - Walker - Wharton - Willacy