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Thursday, April 23, 2020 | History

3 edition of Internal stratigraphic correlation of the subsurface Potomac formation, New Castle County, Delaware, and adjacent areas in Maryland and New Jersey found in the catalog.

Internal stratigraphic correlation of the subsurface Potomac formation, New Castle County, Delaware, and adjacent areas in Maryland and New Jersey

Richard N. Benson

Internal stratigraphic correlation of the subsurface Potomac formation, New Castle County, Delaware, and adjacent areas in Maryland and New Jersey

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  • 38 Currently reading

Published by Delaware Geological Survey, University of Delaware in Newark, Del .
Written in English

    Subjects:
  • Stratigraphic correlation -- Delaware -- New Castle County,
  • Stratigraphic correlation -- Maryland,
  • Stratigraphic correlation -- New Jersey,
  • Aquifers -- Delaware -- New Castle County,
  • Aquifers -- Maryland,
  • Aquifers -- New Jersey

  • About the Edition

    This report presents a new time-stratigraphic framework for the subsurface Potomac Formation of New Castle County, Delaware, part of adjacent Cecil County, Maryland, and nearby tie-in boreholes in New Jersey. The framework is based on a geophysical well-log correlation datum that approximates the contact between Upper and Lower Cretaceous sediments. This datum is constrained by age determinations based on published and unpublished results of studies of fossil pollen and spores in samples of sediment cores from boreholes in the study area. Geophysical log correlation lines established above and below the datum approximate additional chronostratigraphic surfaces. The time-stratigraphic units thus defined are not correlated parallel to the basement unconformity, as in previous practice, but instead onlap it in an updip direction. In future studies, the sedimentary facies of the Potomac Formation within each time-stratigraphic layer may be mapped and analyzed as genetically related contemporaneous units. This new stratigraphic framework will allow better delineation of the degree of lateral connection between potential aquifer sands, thus enhancing understanding of aquifer architecture.

    Edition Notes

    Statementby Richard N. Benson ; with a contribution on palynology by Peter P. McLaughlin, Jr.
    SeriesReport of investigations / Delaware Geological Survey -- no.71, Report of investigations (Delaware Geological Survey) -- no. 71.
    ContributionsMcLaughlin, Peter P. 1962-, Delaware Geological Survey.
    Classifications
    LC ClassificationsQE652.55.U6 B46 2006, QE95 .A37 no.71
    The Physical Object
    Pagination15 p. :
    Number of Pages15
    ID Numbers
    Open LibraryOL23161410M
    LC Control Number2008397217


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Internal stratigraphic correlation of the subsurface Potomac formation, New Castle County, Delaware, and adjacent areas in Maryland and New Jersey by Richard N. Benson Download PDF EPUB FB2