Pamunkey Group; Nanjemoy Formation (MDTn;5)

Pamunkey Group; Nanjemoy Formation

Dark green to gray, argillaceous, glauconitic, fine- to medium-grained sand; minor gray to pale brown clay; total thickness 0 to 125 feet; Marlboro Clay member at base: Pink to gray, homogeneous plastic clay with local lenses of very fine-grained white sand; thickness 0 to 30 feet; present west of Chesapeake Bay only; total thickness 0 to 125 feet.

State	Maryland
Name	Pamunkey Group; Nanjemoy Formation
Geologic age	Eocene
Lithologic constituents	Major Unconsolidated > Coarse-detrital > Sand Minor Unconsolidated > Fine-detrital > Clay
Stratigraphic units	Pamunkey Group
References	Cleaves, E.T., Edwards, J., Jr., and Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Baltimore, Maryland, scale 1:250,000. In 1995 the Water Resources Division of the U.S. Geological Survey digitized the geologic map of Maryland from the 1968 paper map (Reference MD001). Information about products from the Maryland Geological Survey can be found at http://www.mgs.md.gov/.
NGMDB product	NGMDB product page for 16548
Counties	Anne Arundel - Calvert - Charles - Prince George's

Pamunkey Group; Nanjemoy Formation

Cleaves, E.T., Edwards, J., Jr., and Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Baltimore, Maryland, scale 1:250,000.

In 1995 the Water Resources Division of the U.S. Geological Survey digitized the geologic map of Maryland from the 1968 paper map (Reference MD001). Information about products from the Maryland Geological Survey can be found at http://www.mgs.md.gov/.