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Kenneth D. Woodruff, Associate Director (1966 - 1992)

Kenneth D. Woodruff, Associate Director (1966 - 1992)
Date: May 1966 - Jan 1992

Kenneth D. Woodruff, Associate Director (1966 - 1992)

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Thomas E. Pickett, Associate Director (1966 - 1996)

Thomas E. Pickett, Associate Director (1966 - 1996)
Date: Oct 1966 - Jun 1996

Thomas E. Pickett, Associate Director (Oct 1966 - Jun 1996)

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Maps and Directions

Maps, driving directions, parking, and contact information for the Delaware Geological Survey.

About the Delaware Geological Survey

The DGS Building, University of Delaware, Newark Campus

The Delaware Geological Survey (DGS) is a science-based, public-service-driven Delaware state agency at the University of Delaware (UD) that conducts geologic and hydrologic research, service, and exploration for the benefit of the citizens of the First State. The mission of the DGS is to provide objective earth science information, advice, and service to its stakeholders, the citizens, policy makers, industries, and educational institutions of Delaware.

The Second Delaware Geological Survey

The Second Delaware Geological Survey
Date: Jun 1951

The Survey started its investigations in July 1951 with Johan J. Groot as State Geologist and Lecturer, later Professor of Geology, and Louis P. Vlangas as Geological Field Assistant. The University provided office space, which was shared with the Department of Geography. The cooperative program with the USGS, begun prior to 1951, was continued. Studies of the geology of New Castle County and of the ground-water resources of the Newark area were initiated, the latter with financial support of that city.

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First State Geology Vol.1, No.1 is published

First State Geology Vol.1, No.1 - Summer 1983
Date: May 1983

First State Geology offers news on Delaware geology and water resources, on recent DGS publications, and on DGS staff activities as a twice-per-year newsletter publication.

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Sillimanite established as Delaware State Mineral

Sillimanite - Delaware's State Mineral
Date: Jan 1977

In 1977, the Delaware General Assembly, acting on a proposal by the Delaware Mineralogical Society, established sillimanite as the Delaware State Mineral.

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John H. Talley, Director and State Geologist (2002-2011)

John H. Talley, Director and State Geologist
Date: Jul 2002 - Jun 2011

John Talley joined the DGS as a project geologist in 1972, became a senior scientist and hydrogeologist by 1986, and rose to director and state geologist by 2004. He’s consulted with dozens of university, state, and federal governments and groups and amassed a list of more than 50 publications and reports.

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Robert R. Jordan, Director and State Geologist (1969 - 2003)

Robert R. Jordan, Director and State Geologist (1969 - 2003)
Date: Jun 1969 - Jan 2003

Robert R. Jordan, Director and State Geologist (1969 - 2003)

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Johan J. Groot, Director of DGS and State Geologist (1951 - 1969)

Johan J. Groot, Director of DGS and State Geologist (1951 - 1969)
Date: Jun 1951 - Jul 1969

In 1951, Delaware passed legislation establishing the present Delaware Geological Survey as a unit of the University of Delaware. Johan J. Groot was installed as State Geologist and Director of DGS until 1969. Groot was also Professor of Geology in the UD Department of Geology.

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DGS moves into a new building!

The home of DGS since 1989
Date: Jun 1989

The Delaware Geological Survey moves into its own home in 1989 after sharing Penny Hall with the UD Department of Geology for over 20 years.

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DGS releases first public web site

The first DGS website.
Date: Apr 1997

DGS releases first public web site.

DGS Publications

The core of much DGS work culminates in the release of data and findings in official DGS publications, including Open File Reports, Reports of Investigations, Geologic Maps, Hydrologic Maps, and Bulletins.