| State | Delaware |
|---|---|
| Name | Potomac Formation |
| Geologic age | Cretaceous |
| Lithologic constituents | Major
Unconsolidated > Fine-detrital > Clay
Unconsolidated > Coarse-detrital > Sand
Unconsolidated > Fine-detrital > Silt
|
| Comments | Lower Cretaceous, may be overlain locally by the Pleistocene Columbia Formation |
| References | Spoljaric, Nenad and Jordan, Robert R., 1966, Generalized Geologic Map of Delaware SP4, State of Delaware, Delaware Geological Survey, scale ca. 1:300,000. Digitized by the Water Resources Division of the U.S. Geological Survey in the mid 1990's. |
| NGMDB product | |
| Counties | New Castle |