Progress report on the geothermal potential for southern Delaware by focusing on the inclusion of additional gravity mapping, contouring gravity data, and some preliminary quantitative interpretations of gravity and magnetic data
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The Gravity Map of Delaware and Surrounding Vicinity in Maryland and Virginia illustrates contoured gravity values for Delaware and parts of the adjacent vicinities of Maryland and Virginia. The map is georeferenced, but no legend is included. The gravity map is available for direct download as a PDF file through Virginia Tech. The document was provided by the Virginia Department of Mines, Minerals, and Energy - Division of Geology and Mineral Resources and made available for distribution through the National Geothermal Data System.
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This resource is a compilation of well log observation data for Delaware water wells and oil and gas wells and provides links to representations of the actual geophysical well log , which typically will be either a paper copy, scanned image, or LAS file. These data were compiled by the Virginia Department of Mines, Minerals, and Energy, Division of Geology and Mineral Resources and the Delaware Geological Survey and are available in the following formats: web feature service, web map service, ESRI service endpoint, and an Excel workbook for download. The workbook contains 5 worksheets, including information about the template, resource provider information, the data, a field list (data mapping view). and a worksheet with log type codes. This resource was provided by the Delaware Geological Survey and made available for distribution through the National Geothermal Data System.
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Report of investigations analyses of drillers' and geophysical logs, cuttings, and 29 core samples from well Nc13-3 near Greenwood, Sussex County, Delaware indicate that the l500-foot section penetrated by the drill can be divided into seven rock-stratigraphic units: Matawan Formation, Monmouth Formation, unit A, Piney Point Formation, Chesapeake Group (undifferentiated), Staytonville unit, and the Columbia Formation. The rock units are identified on the basis of texture, mineralogy, color, and interpretation of electric and gamma-ray logs. The oldest rocks penetrated are Upper Cretaceous; Tertiary and Quaternary rocks were also encountered.
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This resource is a compilation of borehole temperature observation data from water wells provided by the Virginia Department of Mines, Minerals and Energy, Division of Geology and Mineral Resources and Delaware Geological Survey. These data are published as a Web feature service and available in the following formats: web feature service, web map service, ESRI service endpoint, and an Excel workbook for download. The workbook contains 4 worksheets, including information about the template with notes related to revisions of the template, resource provider information, the data, and a field list (to assist data mapping). This resource was provided by the Delaware Geological Survey and made available for distribution through the National Geothermal Data System.
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Report of Investigations detailing the history of oil and gas exploration in the mid-Atlantic and Delaware's involvement in the OCS leasing program
05/20/2015 - 14:02
This resource is a compilation of the Geologic Units of Delaware, provided by the Delaware Geological Survey and made available for distribution through the AASG Geothermal Data Systems project, published as a web feature and available as an Excel workbook for download. The workbook contains 7 worksheets, including information about the template, notes related to revisions of the template, Resource provider information, the data, a field list (data mapping view) and vocabularies used to populate the data worksheet (data valid terms). Data from 54 geologic units are included. Fields in the data table include unit names, descriptions, symbols/labels, lithology and data source.
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Bulletin describing stratigraphy of Delaware, for more information on this resource please see links provided.
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This map shows the surficial geology of New Castle County, Delaware, at a scale of 1:100,000. Maps at this scale are useful for viewing general geologic framework on a county-wide basis, determining the geology of watersheds, and recognizing the relationship of geology to regional or county-wide environmental or land-use issues. The map was compiled from topographic and geologic maps, aerial photographs, geologists' and drillers' logs, geophysical logs, soils maps, and sample descriptions. Samples from drill holes and outcrops were examined for comparison with previous descriptions. Other than the Old College (Ramsey, 2005) and Bridgeton Formations (Owens, 1999; Owens et al., 1970), all geologic units were previously mapped or described in Delaware. Descriptions of geologic units, unless otherwise referenced, were generated by the author after examination of cores, outcrops, and samples from the Delaware Geological Survey Core and Sample Repository.
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Progress report on the geothermal potential for the state of Delaware by examining five Department of Energy 1,000 foot test wells
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Report of Investigation detailing the analysis and summary of water-table maps for the Delaware Coastal Plain
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Publication prepared to serve as a general procedure guide to various technical, economic, and institutional aspects of geothermal development in Delaware
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This vector data set contains the rock unit polygons for the surficial geology in the Delaware Coastal Plain covered by DGS Geologic Map No. 16 (Fairmount and Rehoboth Beach quadrangles). The geologic history of the surficial units of the Fairmount and Rehoboth Beach quadrangles is that of deposition of the Beaverdam Formation and its subsequent modification by erosion and deposition related to sea-level fluctuations during the Pleistocene. The geology reflects this complex history both onshore, in Rehoboth Bay, and offshore. Erosion during the late Pleistocene sea-level low stand and ongoing deposition offshore and in Rehoboth Bay during the Holocene rise in sea level represent the last of several cycles of erosion and deposition.
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Report of investigations on the Cat Hill Formation and the Bethany Formation of Delaware and their importance of ground water to the local areas
05/20/2015 - 14:02
Open file report on the subsurface geology and resource potential, focusing on the hydrocarbon, of southern Delaware for the nontechnical reader. This review summarizes the present knowledge of the subsurface
geology and resource potential of southern Delaware and outlines the needs for future studies to gain further understanding of these matters. Because of the present interest in exploring for oil and gas beneath the Atlantic Outer Continental Shelf it is most timely that the primary resource considered in this report be the hydrocarbon (petroleum and natural gas) potential of the State. Hydrocarbons occur in commercial quantities only in thick sections of sedimentary rock, therefore, southern Delaware (primarily Sussex County) is the focus of this study because the thickest sedimentary rock section in the State is here. Assessment of the hydrocarbon potential of this area also has bearing on other resources such as groundwater (both fresh water and subsurface brines), underground storage of natural gas, and underground waste disposal.
