1. Mineral Resources
  2. Online Spatial Data
  3. Geology
  4. by state
  5. Delaware

Chesapeake Group

XML
JSON
Shapefile
Bluish gray silt with quartz sand and some shell beds.
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