Browsing DGS Reports of Investigations by Title

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  • Wang, L.T.; McKenna, T.E.; DeLiberty, T.L. (Newark, DE: Delaware Geological Survey, University of Delaware, 2008)
    Delaware’s Inland Bays in southeastern Sussex County are valuable natural resources that have been experiencing environmental degradation since the late 1960s. Stresses on the water resource include land use practices, ...
  • McKenzie, S.W. (Newark, DE: Delaware Geological Survey, University of Delaware, 1979-11)
    Data from three streamflow water-quality stations were statistically analyzed to determine the relationships of the major inorganic chemical constituents to specific conductance and to stream discharge. The results show ...
  • Miller, J.C. (Newark, DE: Delaware Geological Survey, University of Delaware, 1972-05)
    The increasing population of the State of Delaware is placing severe strains on the quality of ground water in the water-table aquifer by disposing of septic-tank effluent in the soil. At the same time the water resources ...
  • Blaier, S.C; Baxter, S.J. (Newark, DE: Delaware Geological Survey, University of Delaware, 2000)
    In June 1996, the U. S. Environmental Protection Agency (USEPA) proposed a regulation to require individual states to develop Pesticide Management Plans (PMPs) to protect their ground-water resources from pesticide ...
  • Woodruff, K.D. (Newark, DE: Delaware Geological Survey, University of Delaware, 1969-08)
    The location of the fresh-salt-water-boundary in the deeper aquifers of Delaware is related mainly to head values. Near coastal areas, dynamic conditions may prevail that affect the interface position within shallow aquifers ...
  • Jordan, R.R. (Newark, DE: Delaware Geological Survey, University of Delaware, 1962-02)
    The uppermost Cretaceous and lowermost Tertiary planktonic Foraminifera obtained from cores taken in a deep well near Dover, Delaware are studied. The Cretaceous foraminifers are of the Heterohelix-Globotruncana assemblage ...
  • Groot, J.J. (Newark, DE: Delaware Geological Survey, University of Delaware, 1992-06)
    The Calvert Formation, deposited in a shallow sea during the late Oligocene and early to middle Miocene (15-27 million years ago), contains a very rich fossil microflora, both in terms of number of specimens and number of ...
  • Spoljaric, N. (Newark, DE: Delaware Geological Survey, University of Delaware, 1967-05)
    Two Pleistocene channel-systems are recognized in New Castle County, (1) a system of straight channels located in the area north of the Chesapeake and Delaware Canal and (2) a braided system occupying the area south of the ...
  • Groot, J.J.; Jordan, R.R. (Newark, DE: Delaware Geological Survey, University of Delaware, 1999)
    The surficial Pliocene and Quaternary sedimentary deposits of the Atlantic Coastal Plain of Delaware comprise several formal and informal stratigraphic units. Their ages and the paleoenvironments they represent are interpreted ...
  • Adams, J.K.; Jordan, R.R. (Newark, DE: Delaware Geological Survey, University of Delaware, 1961-05)
  • Bachman, L.J.; Ferrari, M.J. (Newark, DE: Delaware Geological Survey, University of Delaware, 1995)
    Water samples were collected from 63 wells in southern New Castle County to assess the occurrence and distribution of dissolved inorganic chemicals in ground water. Rapid growth is projected for the study area, and suitable ...
  • Spoljaric, N. (Newark, DE: Delaware Geological Survey, University of Delaware, 1967-10)
    The quantitative lithofacies analysis of the Potomac Formation in a small area west of Delaware City revealed that the deposition of these sediments was continuous throughout the time of their formation. The uppermost ...
  • Ramsey, K.W.; Baxter, S.J. (Newark, DE: Delaware Geological Survey, University of Delaware, 1996)
    Radiocarbon dates from 231 geologic samples from the offshore, coastal, and upland regions of Delaware have been compiled along with their corresponding locations and other supporting data. These data now form the Delaware ...
  • Johnston, R.H. (Newark, DE: Delaware Geological Survey, University of Delaware, 1976-02)
    Beaverdam Branch, the Nanticoke River, Sowbridge Branch, and Stockley Branch drain small basins in the Delaware Coastal Plain that are characterized by similar climate, topography, geology, and land use. Withdrawals of ...
  • Spoljaric, N.; Crawford, W.A. (Newark, DE: Delaware Geological Survey, University of Delaware, 1979-02)
    Distilled water spiked with heavy metal cations was passed at a rate of 2-4 ml/min through a filter composed of greensand containing about 80 percent glauconite. The capability of the greensand to trap metal cations is ...
  • Andres, A.S.; Howard, C.S. (Newark, DE: Delaware Geological Survey, University of Delaware, 2002)
    The Cypress Swamp Formation is the surficial geologic unit in south-central Sussex County, Delaware. Detailed hydrologic observations made as part of four separate studies between 1995 and 1999 show that the Cypress Swamp ...
  • Andres, A.S. (Newark, DE: Delaware Geological Survey, University of Delaware, 1991-02)
    The results of this investigation of the Columbia aquifer in coastal Sussex County, Delaware, provide some of the data necessary to evaluate the condition of the area's primary source of fresh water. Chemical analyses of ...
  • Cohen, B. (Newark, DE: Delaware Geological Survey, University of Delaware, 1957-07)
    The purpose of this investigation was to obtain data on and study the factors affecting the salinity of the Delaware River from Philadelphia, Pennsylvania to Reedy Island, Delaware. The techniques of analyses of data and ...
  • Woodruff, K.D. (Newark, DE: Delaware Geological Survey, University of Delaware, 1976-02)
    Geophysical logging techniques have been used in Delaware for many years as a means of identification and correlation of Coastal Plain formations. Criteria for the recognition of those formations having distinctive types ...
  • Plank, M.O.; Schenck, W.S. (Newark, DE: Delaware Geological Survey, University of Delaware, 1997)
    The Setters Formation, identified on the southeast side of Pleasant Hill valley in well Cb13-16, contains the prograde mineral assemblages (1) microcline, biotite, and sillimanite +/- garnet, and (2) microcline, biotite, ...

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