State | Delaware |
---|---|
Name | Chesapeake Group |
Geologic age | Tertiary |
Lithologic constituents |
Major
Unconsolidated > Fine-detrital > SiltBluish gray silt with quartz sand and some shell beds.
Minor
Unconsolidated > Coarse-detrital > SandBluish gray silt with quartz sand and some shell beds.
|
Comments | Miocene, 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 | Kent - New Castle - Sussex |