Published as a Special Publication, this is the first generalized statewide geologic map of Delaware.

The Generalized Geologic Map of Delaware is a brief summary for general use indicating the major types and locations of rocks present throughout the State, and their interrelationships. The map is preliminary as it is a first step in a continuing program of detailed geologic mapping. It is based upon many existing sources of data; additional detail may be found in the references listed.

This publication can be obtained as a PDF at SP4 Generalized Geologic Map Of Delaware.