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This file is a component of the digital structure contour map of the top of the Waste Gate Formation in Maryland, Virginia and potentially Delaware and New Jersey (1: 500,000 scale). The contour map is based on information previously published by the Maryland Geological Survey (Hansen, 1982, 1984) in which the Waste Gate Formation was formally named. Hansen (1982, 1984) included the existing elevation data for the top of formation from the available, but limited number of, boreholes that were drilled between 1944 and 1981 and penetrated this formation. For boreholes drilled in Maryland, Virginia, and New Jersey, the elevation data (relative to mean sea level) from Hansen (1982, 1984) along with previously unpublished location coordinates were used as the source data points to develop the current structure contour map. New 500-foot structure contours were then created via manual interpolation. The structure contour map from Hansen (1982) was scanned and georeferenced for comparison purposes.<\/SPAN><\/P>

The geologic features of structure contour map are divided into separate (vector) files for structure contour lines and elevation data points. This vector layer includes the only the structure contour lines developed as digital line (arc) features in ESRI ArcGIS Shapefile format. The feature attribute table, which is part of this file, includes the elevation represented by each contour line.<\/SPAN><\/P>

This file and the related Waste Gate Formation Structure Contour Map showing elevation of the unit top, were provided originally in a projection specifically developed for this project, referred to as MRCSP_North_America_Albers_Equal_Area_Conic. This projection is an Albers Equal Area Conic NAD83 projection (in survey feet) that was adjusted by the MRCSP as follows: the central meridian to -82.0 degrees, and the standard parallels to 38.5 and 43 degrees (to better bracket the project's specific area of use). Subsequently, for the Midwest Regional Carbon Initiative (MRCI), circa 2024, the file was reprojected to another project-specific projection, referred to as MRCI_North_American_Albers_Equal_Area; projection: Albers, authority: custom, linear unit: US survey feet, false easting: 0, false northing: 0, central meridian: -82.0, standard parallel 1: 38.0748169, standard parallel 2: 46.9603261, and latitude of origin: 42.5175715.<\/SPAN><\/P>

Author/Originator/Credit Details: Maryland Geological Survey of the Maryland Department of Natural Resources (compiler), a partner of the Midwest Regional Carbon Sequestration Partnership (MRCSP)<\/SPAN><\/P>

Production of the digital geospatial data set was funded, in part, by the United States Department of Energy's National Energy Technology Laboratory (DOE/NETL) via the Midwest Carbon Sequestration Partnership (MRCSP), which is led by Battelle. The MRCSP--of which the Maryland Geological Survey is a partner--is one of seven regional partnerships established by the U.S. DOE/NETL. The views and the opinions of authors expressed herein do not necessarily state or reflect those of the members of the MRCSP, the United States Government or any agency thereof.<\/SPAN><\/P>

The Maryland Geological Survey received support in the development and production of the digital geospatial data set in ArcGIS format from Towson University, Center for Geographic Information Sciences.<\/SPAN><\/P>

Date Created: 2005<\/SPAN><\/P>

Additional Metadata/Details: Additional metadata/details are available in Waste Gate files associated with the Ohio Department of Natural Resources Division of Geological Survey Open File Report, OFR 2005-1, Characterization of geologic sequestration opportunities in the MRCSP region - Phase I task report, Lawrence Wickstrom and others, 2010.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "geometryType": "esriGeometryPolyline", "sourceSpatialReference": { "wkt2": 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