Francois Morel, Albert G. Blanke Jr. Professor of Geosciences at Princeton University, and William H. Schlesinger, president of the Cary Institute of Ecosystem Studies, will present scientific talks during the official launch of the Delaware Environmental Institute (DENIN) at the University of Delaware's Mitchell Hall in Newark, Del., on Friday, Oct. 23.
This free event will showcase UD researchers in their use of geospatial techniques and technologies.
Governor Elbert N. Carvel promoted legislation, with regard to water resources, with Seante Bill 129 which created the Delaware Geological Survey, introduced by State Senator William O. Cubbage in the 116 General Assembly and signed into law by Governor Carvel on June 4, 1951.
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This report accompanies a new map that revises the original bedrock geologic maps of the Delaware Piedmont compiled by Woodruff and Thompson and published by the Delaware Geological Survey (DGS) in 1972 and 1975. Combined detailed mapping, petrography, geochemistry, and U-Pb geochronology have allowed us to redefine two rock units and formally recognize eleven new units. A section of the Pennsylvania Piedmont is included on the new map to show the entire extent of the Mill Creek Nappe and the Arden Plutonic Supersuite.
Examination of continuous water-level hydrographs from two artesian observation wells in the Piedmont near Newark, Delaware reveals water-level fluctuations caused by earthquakes and by earth tides. The effects of 14 distant earthquakes with MS (surface wave) magnitudes between 6.7 and 8.0 and MB (body wave) magnitudes between 5.9 and 7.0 (National Earthquake Information Service, 1975-1977) have been recorded over a two-year and ten-month period.
Well and aquifer coefficients have been determined for a crystalline rock aquifer system that provides part of the water supply of the City of Newark, Delaware. Conventional analytical methods can be used to derive coefficients for crystalline rocks in the Newark area if the limitations of such methods are recognized and if the local hydrologic framework is known.
Kenneth D. Woodruff, Associate Director (1966 - 1992)
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.