Deweyville Formation (TXQd;0)

State	Texas
Name	Deweyville Formation
Geologic age	Phanerozoic \| Cenozoic \| Quaternary \| Pleistocene Holocene (?)
Original map label	Qd
Comments	sand, silt, clay, and gravel. locally indurated with calcium carbonate (caliche); includes point bar, natural levee, stream channel, and locally, Recent and older sand dune deposits; surface shows relict meanders of much larger radius of curvature than those of present streams; thickness 50+ ft. Present at places along Guadalupe, Nueces, Jacinto, Trinity, Neches, and Sabine Rivers.
Primary rock type	sand
Secondary rock type	silt
Other rock types	clay or mud
Lithologic constituents	Major Unconsolidated > Fine-detrital (Bed) Unconsolidated > Coarse-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	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, 1968, Beaumont Sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000.
Geographic coverage	Calhoun - Goliad - Hardin - Harris - Houston - Jackson - Jasper - Jefferson - Jim Wells - Liberty - Live Oak - Madison - Montgomery - Newton - Nueces - Orange - Polk - Refugio - San Jacinto - San Patricio - Trinity - Tyler - Victoria - Walker