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Mineral Resources > Online Spatial Data > Geology > by state > Louisiana

High Terraces

tan to orange clay, silt, and sand with a large amount of basal gravels.
StateLouisiana
NameHigh Terraces
Geologic agePhanerozoic | Cenozoic | Quaternary | Pleistocene
Original map labelQth
CommentsSurfaces are highly dissected and less continuous than lower terraces. Composed of terraces fomerly designated as Williana, Citronelle, and the highest Bentley.
Primary rock typeclay or mud
Secondary rock typesilt
Other rock typessand; gravel
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > Sand (Terrace, stream)
Unconsolidated > Fine-detrital > Silt (Terrace, stream)
Unconsolidated > Fine-detrital > Clay (Terrace, stream)
Map references
United States Geological Survey, 1998, Digital Overlay of the Geologic Map of Louisiana: U.S. Geological Survey, Biological Resources Division, National Wetlands Research Center, Product Id USGS-NWRC 1984-02-0001, http://www.nwrc.usgs.gov/.
Unit references
United States Geological Survey, 1998, Digital Overlay of the Geologic Map of Louisiana: U.S. Geological Survey, Biological Resources Division, National Wetlands Research Center, Product Id USGS-NWRC 1984-02-0001, http://www.nwrc.usgs.gov/.
Geographic coverageAllen - Beauregard - Bienville - Bossier - Catahoula - Grant - La Salle - Natchitoches - Rapides - Red River - Sabine - Saint Helena - Saint Tammany - Tangipahoa - Vernon - Washington - Webster - Winn

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