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The Delaware Geological Survey

Geologic and hydrologic research and exploration for Delaware

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All about the Delaware Geological Survey Download geologic and hydrologic maps and datasets Information about the Geology and Hydrogeology of Delaware Learn about fossils found in Delaware Hydrogeologic data and information for Delaware The Delaware Geological Survey publication catalog Research and educational projects of the DGS Summary of Water Conditions in Delaware DGS Annual Report of Programs and Activities DGS Story Map Gallery Meet the people that make up the DGS Did you feel an earthquake? Complete our Earthquake Felt Report.

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  • PRESS RELEASE: Delaware Geological Survey Releases Revised Elevation Contours for the State
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Did You Know?

Glauconite (Greensand)

Greensand is composed primarily of the mineral glauconite -- a potassium, iron, aluminum silicate. In some Delaware greensands, the glauconite…

Read more facts >

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© 2019 Delaware Geological Survey, University of Delaware, Newark, DE 19716-7501

Phone: 302-831-2833 | Fax: 302-831-3579 | Email: delgeosurvey@udel.edu

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