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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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  • AASG 2018 Annual Conference Website
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Latest News

  • A Sign of the Times
  • Delaware Geological Survey releases report on tidal wetland inundation in the Murderkill Estuary, Kent County, Delaware
  • Delaware Geological Survey releases new geologic map of the Smyrna Area
  • Beatrice O'Hara of DGS presented a poster
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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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© 2017 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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