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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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  • DGS Annual Report released
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Latest News

  • Update - DGS Groundwater Data
  • Friend of the Bays Partner Award given to DGS staffer Scott Andres
  • CEMA recognized by state
  • Delaware Geological Survey issues report on results of subsurface exploration and hydrologic characterization studies in Kent County, Delaware
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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…

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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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