Browsing Delaware Geological Survey by Issue Date

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  • Rima, D.R.; Coskery, O.J.; Anderson, P.W. (Newark, DE: Delaware Geological Survey, University of Delaware, 1964-03)
    Southern New Castle County has a land area of 190 square miles in north-central Delaware. It is predominantly a rural area with a population of about 9,000 people who are engaged chiefly in agriculture. By and large, the ...
  • Jordan, R.R. (Newark, DE: Delaware Geological Survey, University of Delaware, 1964-09)
    The Columbia deposits of Delaware form a sheet of sand with a maximum thickness of approximately 150 feet which covers most of the Coastal Plain portion of the State. The dispersal pattern, deduced from foreset dip directions ...
  • Baker, W.W.; Varrin, R.D.; Groot, J.J.; Jordan, R.R. (Newark, DE: Delaware Geological Survey, University of Delaware, 1966-03)
    At present, Delaware has an abundance of water for the foreseeable future, but is already faced with water problems in some municipalities. These can only be resolved satisfactorily through complete evaluation of the State's ...
  • Spoljaric, N.; Jordan, R.R. (Newark, DE: Delaware Geological Survey, University of Delaware, 1966-08)
    The Generalized Geologic Map of Delaware is a brief summary for general use indicating the major types and locations of rocks present throughout the State, and their interrelationships. The map is preliminary as it is a ...
  • Woodruff, K.D. (Newark, DE: Delaware Geological Survey, University of Delaware, 1967-04)
    This report deals with fluctuations in nine observation wells during the period 1960 - 1966. These wells are part of a state-wide ground-water monitoring network and are located in areas of little or no pumping. Eight 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 ...
  • Bonini, W.E. (Newark, DE: Delaware Geological Survey, University of Delaware, 1967-06)
    Pleistocene channels along the margins of the Atlantic Coastal Plain are developed in crystalline and Triassic sediments (Bonini and Hickok, 1958), or into the Cretaceous and Tertiary coastal plain sediments (Widmer, 1965). ...
  • 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 ...
  • DGS Staff (Newark, DE: Delaware Geological Survey, University of Delaware, 1968)
  • 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 ...
  • Pickett, T.E. (Newark, DE : Delaware Geological Survey, University of Delaware, 1970)
  • Pickett, T.E. (Newark, DE: Delaware Geological Survey, University of Delaware, 1970-06)
    Forty-eight samples of Delaware clays were collected and tested jointly by the Delaware Geological Survey and the U. S. Bureau of Mines. Clays potentially useful for face brick are common. The nonmarine Cretaceous Potomac ...
  • Woodruff, K.D. (Newark, DE: Delaware Geological Survey, University of Delaware, 1970-07)
    Information on ground-water quality in Delaware has become critical for three reasons: (1) increased water demand, (2) need for a better understanding of ground-water flow patterns, (3) need for a "base" against which ...
  • Spoljaric, N.; Woodruff, K.D. (Newark, DE: Delaware Geological Survey, University of Delaware, 1970-08)
    Columbia sediments in the Middletown-Odessa area are composed of boulders, gravels, sands, silts and clays. These sediments are exposed in four gravel pits where their structures and textures were studied. Subsurface geology ...
  • Pickett, T.E.; Spoljaric, N. (Newark, DE: Delaware Geological Survey, University of Delaware, 1971)
  • Woodruff, K.D. (Newark, DE: Delaware Geological Survey, University of Delaware, 1971-06)
    The feasibility of using geophysical techniques in determining the amount of overburden and the nature of the subsurface along a proposed highway was tested in the Piedmont area of Delaware. The area is underlain by ...
  • Miller, J.C. (Newark, DE: Delaware Geological Survey, University of Delaware, 1971-08)
    The need for locating additional sources of ground water for the Delaware Atlantic seashore, a predominantly recreation-oriented area, is indicated by an expanding population in the belt between Philadelphia, Pennsylvania ...
  • Miller, J.C. (Newark, DE: Delaware Geological Survey, University of Delaware, 1971-10)
    Inspection of water analyses on file at the Delaware Geological Survey revealed that 25 percent of the shallow wells yield water with nitrate concentrations approaching or in excess of the Delaware State Board of Health ...
  • Woodruff, K.D.; Thompson, A.M. (Newark, DE: Delaware Geological Survey, University of Delaware, 1972)
  • Woodruff, K.D. (Newark: Delaware Geological Survey, University of Delaware, 1972)

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