Rita Blanca Formation (TXPOr;0)

State	Texas
Name	Rita Blanca Formation
Geologic age	Phanerozoic \| Cenozoic \| Tertiary \| Pliocene
Original map label	Por
Comments	Southeastern Hartley Co., TX panhandle on Tucumcari Sheet (1983). Upper part: sand, bentonitic clay, thin-bedded calcareous sandstone; thickness 50 ft or mroe. Lower part dark, distinctly laminated clay, some interbeds of sand and thin uniform layers of non-marine dolomite; fossils include plants and small fish; thickness 30 ft or more.
Primary rock type	sand
Secondary rock type	clay or mud
Other rock types	sandstone
Lithologic constituents	Major Unconsolidated > Fine-detrital > Clay (Bed) Unconsolidated > Coarse-detrital > Sand (Bed) Incidental Sedimentary > Carbonate > Dolostone (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, 1983, Tucumcari Sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000.
Geographic coverage	Hartley - Oldham