Special Publications

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Special Publications are thematic products on a particular subject, usually fairly narrowly defined and of special interest. DGS Special Publications include multi-paper volumes, posters, charts, and booklets, and range from less technical to highly technical, depending on the subject.

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Now showing 1 - 20 of 26
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    Digital Elevation Model of Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 2017-09) Wang, L.T
    The Delaware Geological Survey led a multi-agency, state and federal effort (including DelDOT, DNREC, USGS, and NOAA) to secure funds from the Hurricane Sandy Relief appropriation to collect new, high-quality LiDAR for the entire state of Delaware. LiDAR, which stands for Light Detection and Ranging, is a remote sensing method that uses light in the form of a pulsed laser to measure distances from a source to a target object. Typically, a LiDAR device is attached to the bottom of a plane and is pointed at the ground. The time it takes the pulse to return represents the distance it traveled and can be used to generate precise, three-dimensional information about the landscape below and its surface characteristics. Shown here is an elevation dataset derived from the LiDAR data that will help to enhance watershed modeling for predicting stream flooding, produce up-to-date topographic maps, predict and assess the impacts of storm surge and sea-level rise, improve our geologic and land-use mapping, measure changes in marshes and wetlands, and much more.
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    Generalized Geologic Map of Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1976-04) Pickett, T.E.; Spoljaric, N.; Jordan, R.R.
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    Geology and Earth Resources of Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1968) DGS Staff
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    Basic Hydrologic Data For Coastal Sussex County, Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1987-01) Talley, J.H.; Andres, A.S.
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    Selected Fossil Collecting Locations in Delaware and Minerals in Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1978-12) DGS Staff
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    Laboratory Procedures Manual
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1987-05) Kramer, M.G.; DGS Staff; Smith, C.T.
    Laboratory analyses of geologic samples are performed on a regular basis at the Delaware Geological Survey (DGS). These analyses produce valuable information used to assist the production of geologic and hydrologic maps and reports. Procedures used by the DGS for analyzing various aspects of geologic samples are described in this manual. The purpose of this manual is to standardize and document these procedures. Care and skill in laboratory operations are essential to the quality of the resulting interpretations.
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    Correlation Chart Of The Coastal Plain Units In New Jersey, Delaware, And Maryland
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1972-12) Pickett, T.E.
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    Instructions For Preparation Of Delaware Geological Survey Data Base Schedules
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1984-01) Talley, J.H.; Windish, D.C.; Ramsey, K.W.
    This report contains the new DGS data schedules, describes the information that should be recorded on each schedule, and presents instructions for preparation of the schedules. The schedules are designed to make various kinds of data consistent with the input format screens utilized in the automated system.
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    Operations Manual University Of Delaware Drilling Rig
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1986-06) Bounds, R.E.
    This manual has been prepared to promote safe, efficient use of a research tool that is of great importance in Delaware.
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    Selected Papers On The Geology Of Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1980-11) Jordan, R.R.; Pickett, T.E.; Kraft, J.C.; Sheridan, R.E.; Spoljaric, N.; Thompson, A.M.; Woodruff, K.D.; Varrin, R.D.; Leavens, P.B.; Carey, W.L.
    The Delaware Academy of Science has been instrumental in informing Delaware citizens about science and utilization of local resources. Since 1970 the annual meeting of the Delaware Academy of Science has been used as a time for presentation of ongoing research in various areas of science in the Delaware region. The proceedings of these meetings have resulted in publication of transactions of the Delaware Academy of Science. The 1976 annual meeting focused on aspects of the geology of Delaware. Members of the Delaware Geological Survey and the Geology Department at the University of Delaware contributed papers in their specific disciplines. This volume presents an overview of studies of geological features and processes of evolution of the geology of Delaware. Although this collection of papers does not represent an all-inclusive study of the subject, the selections included in this volume highlight past, present, and future trends in the study of Delaware's geology. It is hoped that the combined bibliographies of all the papers will provide a comprehensive view of the literature for further investigation into the geology of Delaware.
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    Long-Range Plan For Water Resources Investigations In Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1961-02) DGS Staff
    In order to obtain sufficient data which will enable the State to develop its water resources to the fullest extent of which they are capable, a series of systematic investigations is necessary. A long-range plan describing these studies is the subject of this report. A brief discussion of water in Delaware is presented first to provide a proper background for the long-range plan. The plan itself merely outlines the overall objectives and types of investigational work that must be pursued if the State is to develop its water resources wisely.
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    The Story of Your State Geological Survey's Search for Water
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1956) DGS Staff
    This is a brief story about water and the ways in which the Delaware Geological Survey helps insure that you will always have a plentiful supply of this precious natural resource.
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    The Delaware Geological Survey: The Formative Years, 1951-1969
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1988-06) Groot, J.J.
    Emphasis is placed herein on the years of Dr. Groot's leadership of the Survey. The remarkable work of James C. Booth in the last century is acknowledged but has elsewhere been entered in history. Some continuing activities of the Survey after 1969 are noted together with comments of an experienced observer; this current period may someday receive the attention of a recorder having the enhanced perspective of time.
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    Memoir of the Geological Survey of the State of Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 1841) Booth, J.C.
    The following report of the geological survey of the state of Delaware, conducted in the years 1837 and 1838, embraces all the observations and examinations which were made during the continuance of the survey, including those contained in the first and second annual reports, already laid before the legislature.
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    Physiographic Regions of the Delaware Atlantic Coast
    (Newark, DE: Delaware Geological Survey, University of Delaware, 2000) Ramsey, K.W.; Schenck, W.S.; Wang, L.T.
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    Historical Coastline Changes of Cape Henlopen, Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 2001) Ramsey, K.W.; Wang, L.T.
    Coastlines are not static features. They are shaped by the daily effects of wind, current, and wave activity. Over time, a coastline may move landward due to relative sea-level rise or low sediment supply, or seaward due to relative sea-level fall or an overabundance of sediment. Perhaps the most striking example of shoreline movement in Delaware is at Cape Henlopen which has grown northward approximately one mile in the last 160 years. Maps and aerial photographs show these changes.
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    Water Table in the Inland Bays Watershed, Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 2005) Andres, A.S.; Martin, M.
    This poster shows three different map views of the water table as well as information about how the maps were made, how the depth to water table changes with seasons and climate, and how the water table affects use and disposal of water. The map views are of depth to the water table, water-table elevation (similar to topography), and water-table gradient (related to water flow velocity).
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    Generalized Geologic Map of Delaware, Postcard
    (Newark, DE: Delaware Geological Survey, University of Delaware, 2000) DGS Staff
    Delaware’s oldest rocks are metamorphic crystalline rocks of the central Appalachian Piedmont Physiographic Province. Atlantic Coastal Plain sediments overlie the crystalline rocks of the Piedmont and range in thickness from a feather edge at the Fall Line to approximately 9,000 feet in the southeastern corner of Delaware. Sediments range in age from Early Cretaceous to Holocene.
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    Selected Geomorphic Features of Delaware
    (Newark, DE: Delaware Geological Survey, University of Delaware, 2000) Ramsey, K.W.; Schenck, W.S.; Wang, L.T.
    The shaded relief image on the left was created using 30-meter resolution Digital Elevation Models (DEMs). The DEMs were developed by John Mackenzie, University of Delaware College of Agriculture and Natural Resources Spatial Analysis Laboratory, from rasterized 1992-93 United States Geological Survey (USGS) Digital Line Graph (DLG) hypsography data. He also combined these data with zero-elevation contours extracted from 1989 Landsat TM Band 7 satellite imagery for coastal quadrangles. The image was digitally enhanced using a false sun angle of 45 degrees shining from the northwest to exaggerate the geomorphic features. In reality the Delaware Coastal Plain is not "mountainous," as it looks in this enhanced image. The hydrology layer was created using USGS 30 x 60 minute and 7.5 minute series DLG data. Municipal boundaries were created using the Delaware Municipal Boundary Framework Layer. Both maps are projected in Universal Transverse Mercator, Zone 18 (UTM 18) on the North American Datum 1983 (NAD83).
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    Earthquake Basics
    (Newark, DE: Delaware Geological Survey, University of Delaware, 2000) Baxter, S.J.
    This report provides a brief overview of the causes of earthquakes, how earthquakes are measured, and a glossary of earthquake terminology.