Browsing DGS Reports of Investigations by Issue Date

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  • Salinity of the Delaware Estuary 
    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 ...
  • High-Capacity Test Well Developed At The Air Force Base, Dover, Delaware 
    Rasmussen, W.C.; Groot, J.J.; Depman, A.J. (Newark, DE: Delaware Geological Survey, University of Delaware, 1958-06)
    A thick aquifer of Eocene age underlies the Dover area, Delaware at depths ranging from 250 to 400 feet below the land surface. The aquifer is about 250 feet thick beneath the Dover Air Force Base and is composed of fairly ...
  • Wells For The Observation Of Chloride And Water Levels In Aquifers That Cross The Chesapeake And Delaware Canal 
    Rasmussen, W.C.; Groot, J.J.; Beamer, N.H. (Newark, DE: Delaware Geological Survey, University of Delaware, 1958-08)
    Three test wells were drilled near the banks of the Chesapeake and Delaware Canal, in aquifers formed by sand beds in two geologic units, the nonmarine Cretaceous sediments and the Magothy formation, which crop out along ...
  • Possibilities For The Storage Of Natural Gas In Delaware 
    Adams, J.K.; Jordan, R.R. (Newark, DE: Delaware Geological Survey, University of Delaware, 1961-05)
  • Some Observations On The Sediments Of The Delaware River South Of Wilmington 
    Jordan, R.R.; Groot, J.J. (Newark, DE: Delaware Geological Survey, University of Delaware, 1962-02)
    A series of cores was obtained from a boring in the sediments of the Delaware River near the Delaware Memorial Bridge. The mineralogy, texture and palynology of these samples have been studied. The sedimentary and palynological ...
  • Planktonic Foraminifera And The Cretaceous-Tertiary Boundary In Central Delaware 
    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 ...
  • An Invertebrate Macrofauna From The Upper Cretaceous Of Delaware 
    Richards, H.G.; Shapiro, E. (Newark, DE: Delaware Geological Survey, University of Delaware, 1963-07)
    Recent erosion along the Chesapeake and Delaware Canal has exposed an unusually rich Upper Cretaceous fossiliferous outcrop at the Biggs Farm, near the eastern end of the Canal. Some III species of mollusks representing ...
  • Evaluation Of The Water Resources Of Delaware 
    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 ...
  • Ground-Water Levels In Delaware January, 1962 - June, 1966 
    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 ...
  • Pleistocene Channels Of New Castle County, Delaware 
    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 ...
  • An Evaluation Of The Resistivity And Seismic Refraction Techniques In The Search For Pleistocene Channels In Delaware 
    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). ...
  • Quantitative Lithofacies Analysis Of Potomac Formation, Delaware 
    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 ...
  • The Occurrence Of Saline Ground Water In Delaware Aquifers 
    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 ...
  • Delaware Clay Resources 
    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 ...
  • General Ground-Water Quality In Fresh-Water Aquifers Of Delaware 
    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 ...
  • Application Of Geophysics To Highway Design In The Piedmont Of Delaware 
    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 ...
  • Ground-Water Geology Of The Delaware Atlantic Seashore 
    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 ...
  • Geology Of The Fall Zone In Delaware 
    Spoljaric, N. (Newark, DE: Delaware Geological Survey, University of Delaware, 1972-03)
    The complex geologic framework of the Fall Zone in Delaware is primarily caused by diverse structural features present in the crystalline basement rocks that have exerted a considerable influence on the distribution of the ...
  • Geology And Ground Water, University Of Delaware, Newark, Delaware 
    Woodruff, K.D.; Miller, J.C.; Jordan, R.R.; Spoljaric, N.; Pickett, T.E. (Newark, DE: Delaware Geological Survey, University of Delaware, 1972-05)
    The results of an intensive ground-water study on University of Delaware lands in the Newark area revealed additional sources of available ground water. Geophysical techniques, air-photo interpretation, studies of existing ...
  • Nitrate Contamination Of The Water-Table Aquifer In Delaware 
    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 ...

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