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Mineral Resources On-Line Spatial Data
Mineral Resources On-Line Spatial Data
| State | Texas |
|---|---|
| Name | Leona Formation |
| Geologic age | Phanerozoic | Cenozoic | Quaternary | Pleistocene |
| Comments | Fluvatile terrace deposits of gravel, sand, silt, and clay on first wide terrrace of Nueces and Leona Rivers below the level of Uvalde Formation. Leona may correlate with Onion Creek Marl of Austin Sheet. |
| Primary rock type | sand |
| Secondary rock type | gravel |
| Other rock types | clay or mud |
| Lithologic constituents | Major
Unconsolidated > Coarse-detrital (Fluvial)
Unconsolidated > Fine-detrital (Fluvial)
|
| 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, 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.
|
| Counties | Bexar - Caldwell - Comal - Culberson - Frio - Guadalupe - Hays - Karnes - Kinney - Maverick - Medina - Reeves - Uvalde - Wilson - Winkler - Zavala |