| State | Louisiana |
|---|---|
| Name | Catahoula Formation |
| Geologic age | Oligocene |
| Lithologic constituents |
Major
Unconsolidated > Coarse-detrital > Sand
Sedimentary > Clastic > Sandstone (Bed)
Unconsolidated > Fine-detrital > Silt (Eolian-loess)
Minor
Igneous > Volcanic (Pyroclastic-air fall)
Unconsolidated > Fine-detrital > Clay (Bed)
|
| Comments | Lower member of the Fleming FM. 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 | Catahoula |