Queen City Sand (TXEOqc;0)

State	Texas
Name	Queen City Sand
Geologic age	Phanerozoic \| Cenozoic \| Tertiary \| Eocene
Original map label	Eqc
Comments	In East Texas and Gulf Coast to Rio Grande- Quartz sand and clay; sand fine grained to locally med. grained, lt. gray to brownish-gray, locally carbonaceous. Clay, gray to brown, silty, sl. lignitic, sand most abdt to west; weathers red and white mottled; ironstone concretions and ledges common; local beds of glauconite-quartz greensand, crossbedded, weathers ferruginous ledges and rubble; 100-400 ft thick. In north, central, and south Texas including Quaternary for all of west Texas- sandstone and siltstone; sandst. fine to med grained, well sorted, noncalcar., friable to indurated, massive, laminated, local beds of glauconite-quartz greensand, crossbedded; siltst. lt. gray, friable, thin interbeds of clay; thickness 250-500 ft
Primary rock type	sandstone
Secondary rock type	siltstone
Other rock types	clay or mud; sand
Lithologic constituents	Major Sedimentary > Clastic > Sandstone (Bed) Sedimentary > Clastic > Siltstone (Bed) Sedimentary > Clastic > Sandstone (Bed) Minor Sedimentary > Clastic > Mudstone > Claystone (Bed) Sedimentary > Clastic > Mudstone > Claystone (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	Eargle, D.H., 1968, Nomenclature of formations of Claiborne Group, Middle Eocene, coastal plain of Texas: U.S. Geological Survey Bulletin 1251-D. [http://pubs.er.usgs.gov/publication/b1251D] Bureau of Economic Geology, 1974, San Antonio Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000. Bureau of Economic Geology, 1974, Seguin Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000. Bureau of Economic Geology, 1976, Crystal City-Eagle Pass Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000. Bureau of Economic Geology, 1965, Tyler sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000. 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, 1967, Palestine Sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000.
Geographic coverage	Anderson - Atascosa - Bastrop - Bexar - Burleson - Caldwell - Camp - Cass - Cherokee - Franklin - Freestone - Frio - Gonzales - Gregg - Guadalupe - Harrison - Henderson - Hopkins - Houston - Lee - Leon - Marion - Milam - Morris - Nacogdoches - Panola - Polk - Robertson - Rusk - San Augustine - Shelby - Smith - Titus - Upshur - Van Zandt - Wilson - Wood