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This file is a component of the digital isopach map of the Waste Gate Formation in Maryland, Virginia and potentially Delaware and New Jersey (1: 500,000 scale). The isopach map is based on information previously published by the Maryland Geological Survey (Hansen, 1982) in which the Waste Gate Formation was formally named. Hansen (1982) included the existing thickness data 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 For boreholes drilled in Maryland, Virginia, and New Jersey, the thickness data along with unpublished location coordinates were used as the source data points to develop the current isopach map. New 100-foot isopach contours were then created via manual interpolation. The isopach map from Hansen (1982) was scanned and georeferenced for comparison purposes.<\/SPAN><\/P>

The geologic features of the isopach map are divided into separate (vector) files for isopach (equal thickness) lines and unit thickness points. This vector layer includes the only the isopach lines developed as digital line (arc) features in ESRI ArcGIS Shapefile format. The feature attribute table, which is part of this file, includes information on unit thickness.<\/SPAN><\/P>

This file and the related Waste Gate Isopach Map was 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 MGS 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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