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Leona Formation

Leona Formation
StateTexas
NameLeona Formation
Geologic agePhanerozoic | Cenozoic | Quaternary | Pleistocene
Original map labelQle
CommentsFluvatile 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 typesand
Secondary rock typegravel
Other rock typesclay or mud
Lithologic constituents
Major
Unconsolidated > Fine-detrital (Fluvial)
Unconsolidated > Coarse-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.
Geographic coverageBexar - Caldwell - Comal - Culberson - Frio - Guadalupe - Hays - Karnes - Kinney - Maverick - Medina - Reeves - Uvalde - Wilson - Winkler - Zavala

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URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=TXQle;0
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