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Intermediate Terraces

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Light gray to orange-brown clay, sandy clay, and silt; much sand and gravel locally. Overlain by 1-9 meters of loess.
State Louisiana
Name Intermediate Terraces
Geologic age Pleistocene
Lithologic constituents
Major
Unconsolidated > Fine-detrital > Clay (Terrace-stream)
Unconsolidated > Fine-detrital > Silt (Terrace-stream, Eolian-loess)
Minor
Unconsolidated > Coarse-detrital > Gravel (Terrace-stream)
Unconsolidated > Coarse-detrital > Sand (Terrace-stream)
Comments Surfaces show more dissection and are topographically higher than the Prairie. Composed of terraces formerly designated as Montgomery, Irene, and most of the 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.
References

Snead, J.I., and Mcculloh, R.P., 1984, Geologic Map of Louisiana: Louisiana Geological Survey, scale 1:500,000.
NGMDB product
Counties East Baton Rouge - East Feliciana - Evangeline - Iberia - Rapides