|Geologic age||Late Jurassic|
Sedimentary > Clastic > Mudstone > Claystone (Bed)
Sedimentary > Clastic > Sandstone (Bed)
|Comments||Clay, shale, and sandstone, red to bluish, variegated, mainly shale; sandstone lt-brownish-yellow; thickness 250 ft.|
Bureau of Economic Geology, 1983, Tucumcari 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.