U.S. Geological Survey 2005 vector digital data Open-File Report 2005-1071 Woods Hole Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Geology Program http://pubs.usgs.gov/of/2005/1071/data/assessments/atmx_sbt/atmx_gtg.zip Twichell, D.C. Cross, V.A. Paskevich, V.F. Hutchinson, D.R. Winters, W.J. Hart, P.E. 2005 http://pubs.usgs.gov/of/2005/1071 Open-File Report2005-1071Woods Hole Science Center, Woods Hole, MAU.S. Geological Survey, Coastal and Marine Geology Program1.01 DVD-ROM atmx_gtg1.0 This GIS overlay is a component of the U.S Geological Survey, Woods Hole Science Center's, Gulf of Mexico GIS database. The Gulf of Mexico GIS database is intended to organize and display USGS held data and provide on-line (WWW) access to the data and/or metadata. This GIS data layer shows the geothermal gradient in degrees Celsius/100 m within the US Exclusive Economic Zone for the Gulf of Mexico and Atlantic Ocean regions. The temperature contour lines were compiled by Collett (1995) as part of the assessment of gas hydrate resources for the 1995 National assessment of United States oil and gas resources. The tabular data used to generate this shapefile were copied from Charpentier et al (1996). en 1996 publication date Complete None planned. -96.517577 -65.716325 41.844546 23.979219 -96.517577-65.71632523.97921941.844546 General U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Woods Hole Science Center WHSC oil and gas resources hydrates seabed temperature Polyline shapefile General Gulf of Mexico Eastern Seaboard U.S. East CoastUnited StatesAtlantic Ocean oceans and estuariesISO 19115 Topic CategorygeoscientificInformation None Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. U.S. Geological Survey David Twichell Oceanographer mailing address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA (508) 548-8700 x2266 (508) 457-2310 dtwichell@usgs.gov Please credit Timothy S. Collett, USGS, as the originator of the dataset from which this GIS data layer is derived. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535 Collett, T.S. 1996 2.0 Digital Data Series 30 Reston, VA U.S. Geological Survey http://energy.cr.usgs.gov/1995OGData/Hydrates/HYDRATE.pdf Gautier, Donald L. (editor) Dolton, Gordon L (editor) Takahashi, Kenneth I. (editor) Varnes, Katharine L. (editor) 1996 2.0 Digital Data Series 30 Reston, VA U.S. Geological Survey http://energy.cr.usgs.gov/1995OGData/DDS30.html Charpentier, R.R. Klett, T.R. Obuch, R.C. Brewton, J.D. 1996 1.0 Digital Data Series 36 Reston, VA U.S. Geological Survey http://pubs.usgs.gov/dds/dds-036/DDS-36.html Shapefilehttp://pubs.usgs.gov/of/2005/1071/data/assessments/atmx_gtg/atmx_gtg.gifImage showing the extent and coverage of the data layer.GIF These data are believed to be logically consistent. Charpentier, Ronald R. Klett, T. R. Obuch, R. C. Brewton, J. D. 1996 1.0 Digital Data Series 36 Reston, VA U.S. Geological Survey http://pubs.usgs.gov/dds/dds-036/DDS-36.html CD-ROM 1992 1995 CD-ROM DDS-36 Geothermal Gradient contours - This CD-ROM contains files in support of the 1995 USGS National assessment of United States oil and gas resources (DDS-30), which was published separately and summarizes the results of a 3-year study of the oil and gas resources of the onshore and state waters of the United States. The study describes about 560 oil and gas plays in the United States; confirmed and hypothetical, conventional and unconventional. A parallel study of the Federal offshore is being conducted by the U.S. Minerals Management Service. This CD-ROM contains files in multiple formats, so that almost any computer user can import them into word processors and spreadsheets. The tabular data include some tables not released in DDS-30. No proprietary data are released on this CD-ROM, but some tables of summary statistics from the proprietary files are provided. The complete text of DDS-30 is also available, as well as many figures. Also included are some of the programs used in the assessment, in source code and with supporting documentation. A companion CD-ROM (DDS-35) includes the map data and the same text data, but none of the tabular data or assessment programs. The original file, atmx_gtg.lin, was copied from DDS 36 where it had been stored in the Arc ungenerate format. 20030501 Geologist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA (508) 548-8700 x2251 (508) 457-2310 vatnipp@usgs.gov VeeAnn Atnipp CrossU.S. Geological Survey atmx_gtg.lin This file was read into ArcView 3.2 using an avenue script called loalin.ave which converted the ungenerate format to a shapefile. The file was made into a polyline shapefile, and the projection was kept as the original Albers Equal Area. ArcToolbox was used to define the projection of the shapefile as Albers Equal Area, NAD83. The projection information used was listed by ESRI as: USA_Contiguous_Albers_Equal_Area_Conic_USGS. The shapefile was then reprojected to Geographic, NAD83 using ArcToolbox, v. 8.2. atmx_gtg.shp Vector String 15 SimplePolylineFALSE15TRUEFALSE 0.000000 0.000000 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 atmx_gtg Feature Class15Shapefile Attribute TableESRI FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. DGCPER100MDGCPER100MNumber824degrees Celsius per 100 mdegrees Celsius per 100 mUSGS Geologist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA (508) 548-8700 x2263 (508) 457-2310 dhutchinson@usgs.gov U.S. Geological SurveyDeborah Hutchinson Downloadable Data Although this derived data set and their lineage datasets have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. SHP 3.3 The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBase format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional). zip archive 0.034 0.004ESRI shapefile http://pubs.usgs.gov/of/2005/1071/data/assessments/atmx_sbt/atmx_sbt.zip DVD-ROM 4.75 Gbytes UDF None These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS® or ArcView® 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com. 20060130 20040206 U.S. Geological Survey David Twichell Oceanographer mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA (508) 548-8700 x2266 (508) 457-2310 dtwichell@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time None None enhttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile {3FBF75C1-7339-4402-B5E9-C1FE172D143D}2005092815280100FALSE20060130135550002006013013555000Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535atmx_gtg-96.517577-65.71632541.84454623.9792191-96.517577-65.71632541.84454623.9792191ISO 19115 Geographic Information - MetadataDIS_ESRI1.0dataset002file://\\VEECRODTXP\gomgis\data\assessments\atmx_gtg\atmx_gtg.shpLocal Area Network0.004ShapefileGCS_North_American_19831520060130