Friday, October 19th has been designated Geologic Map Day 2012. As an extension of the National Cooperative Geologic Mapping Program of USGS, Geologic Map Day focuses the attention of students, teachers, and the general public on the study, uses, and significance of geologic maps for education, science, business, and a variety of public policy concerns.
The event is celebrated on the Friday of American Geosciences Instituteâs Earth Science Week (ESW.) Held October 14-20, ESW 2012 encourages people everywhere to explore the natural world and learn about the geosciences. âDiscovering Careers in the Earth Sciences,â the theme of ESW 2012, engages young people and the public in learning how geoscientists gather and interpret data about the Earth and other planets.
A geologic map provides information about the geology (the type and age of rock or sediment) at or below the earthâs surface. Geologic maps are usually available as hard-copy maps, digital maps (e.g., PDFs) or GIS data files (e.g., shapefiles.)
The DGS manages the geologic mapping program for the state of Delaware and has published numerous surficial geologic maps. Follow the links below to obtain the geology map for your area.
Delaware 1:24,000 Scale Geologic Maps
- GM17 Geologic Map of the Harbeson Quadrangle, Delaware
- GM16 Geologic Map of the Fairmount and Rehoboth Beach Quadrangles, Delaware
- GM15 Geologic Map of the Georgetown Quadrangle, Delaware
- GM12 Geology of the Lewes and Cape Henlopen Quadrangles, Delaware
- GM11 Geology of the Ellendale and Milton Quadrangles, Delaware
- GM10 Bedrock Geologic Map of the Piedmont of Delaware and Adjacent Pennsylvania
- GM9 Geology of the Seaford Area, Delaware
- GM8 Geology of the Milford and Mispillion River Quadrangles, Delaware
Delaware 1:100,000 Scale Geologic Maps
You may also view all of our geologic maps, in context with other DGS-published data, through our Delaware Geologic Information Resource (DGIR) Map Viewer.
For questions and information, contact DGS at