|Geologic age||Late Cretaceous; Gulfian Series|
Sedimentary > Clastic > Mixed-clastic > Sandstone-mudstone (Tuffaceous)
|Comments||NE Texas. Texarkana Sheet (1966) Woodbine Formation--various interlensing sequence of nonmarine, brackish-water, and marine beds of sand, clay, sandstone, and shale 350-600 ft thick. Woodbine fossils include ammonites, gastropods, pelecypods, brachiopods, and foraminifers. Contains volcanic sand and tuff, coarse grained, crossbedded, dk green and olive green; fossil plants and a few marine megafossils; thickness 500 ft, thins eastward.|
|Stratigraphic units||members of Woodbine (ascending) Dexter, Red Branch, Lewisville, and Templeton (Red River area)|
Bureau of Economic Geology, 1966, Texarkana Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, 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.
|Counties||Cooke - Dallas - Denton - Fannin - Grayson - Hill - Johnson - Lamar - McLennan - Red River - Tarrant|