Rancocas Formation

Grayish-green and green, silty, glauconitic sand.
State Delaware
Name Rancocas Formation
Geologic age Tertiary
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > Sandglauconitic
Comments Eocene/Paleocene, 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