High Terraces

Tan to orange clay, silt, and sand with a large amount of basal gravels. Overlain by 1-9 meters of loess.
State Louisiana
Name High Terraces
Geologic age Pleistocene
Lithologic constituents
Unconsolidated > Coarse-detrital > Sand (Terrace-stream)
Unconsolidated > Fine-detrital > Silt (Terrace-stream, Eolian-loess)
Unconsolidated > Fine-detrital > Clay (Terrace-stream)
Unconsolidated > Coarse-detrital > Gravel (Terrace-stream)
Comments Surfaces are highly dissected and less continuous than lower terraces. Composed of terraces fomerly designated as Williana, Citronelle, and the highest Bentley. Where overlain by loess, this unit has a red dotted overlay pattern on the source map. Polygons for this unit in our coverage which should have the loess overlay pattern are designated by "-l" being added to the base map unit symbol.

Snead, J.I., and Mcculloh, R.P., 1984, Geologic Map of Louisiana: Louisiana Geological Survey, scale 1:500,000.

NGMDB product
Counties Catahoula - East Baton Rouge - East Feliciana - Rapides - West Feliciana