|Name||Nash Creek Formation|
Unconsolidated > Fine-detrital > Clay (Bed)clay, bentonitic, brownish gray to pale greenish gray
Unconsolidated > Coarse-detrital > Sand (Bed)interbeds of quartz sand, fine grained
|Comments||clay, bentonitic, brownish gray to pale greenish gray; interbeds of quartz sand, fine grained, light gray; sand weathers medium gray, clay weathers light gray; thickness 60 feet.|
|Stratigraphic units||Jackson Group|
Bureau of Economic Geology, 1967, Palestine 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.
|Counties||Jasper - Newton - Sabine - San Augustine|