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    <titleInfo>
      <title>Official Protraction Diagram and Leasing Map Boundaries, United States, 2001</title>
    </titleInfo>
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      <namePart>United States. Minerals Management Service</namePart>
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    <abstract lang="eng" displayLabel="Abstract">This polygon shapefile shows the official protraction diagram (OPD) and leasing map boundaries for the United States, covering areas of the Outer Continental Shelf (OCS) within Federal jurisdiction. They are generated in accordance with 30 Code of Federal Regulations (CFR) 256.8 to support Federal land ownership and mineral resource management. Leasing maps are irregularly shaped areas developed early in the offshore program for near-shore areas in the Gulf of Mexico. Elsewhere, OPD's were developed on a Universal Transverse Mercator (UTM) grid and are approximately one degree in latitude by two degrees in longitude, except in northern areas where they are three degrees in longitude. This map layer shows existing and planned OPD limits. Actual limits of Federal jurisdiction are defined by various international and maritime boundaries not presently depicted. Lease Map and OPD boundaries in the Gulf of Mexico were historically cut at the Submerged Lands Act (SLA) boundary, while in other areas the full OPD boundary is shown and therefore may include non-OCS lands within the rectangularly shaped OPD boundary. While the Gulf of Mexico Region uses the North American Datum of 1927, for this map layer those coordinates have been transformed to the North American Datum of 1983 to coincide with the OPD's in the other Minerals Management Service regions. This file updates the September 2000 map layer by including the OPD boundaries for Puerto Rico and the U.S. Virgin Islands. This layer is part of the 1997-2014 edition of the National Atlas of the United States.</abstract>
    <abstract lang="eng" displayLabel="Purpose">These data are intended for geographic display and analysis at the national level, and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:2,000,000-scale data. Other sources must be used if exact coordinates are required for legal purposes. No responsibility is assumed by the Minerals Management Service or the National Atlas of the United States in the use of these data.</abstract>
    <note lang="eng" displayLabel="Preferred citation">U.S. Minerals Management Service. (2001). Official Protraction Diagram and Leasing Map Boundaries, United States, 2001. National Atlas of the United States. Available at: http://purl.stanford.edu/kh496wp6731</note>
    <note displayLabel="Supplemental information">For additional information on Official Protraction Diagrams, Leasing Maps, Leases, and the Minerals Management Service (MMS) Technical Information Management System (TIMS), please contact: &gt;MMS Headquarters &gt;381 Elden Street, Suite 1109 &gt;Herndon, VA 20170 http://www.mms.gov/ &gt; &gt;or regional offices for the Gulf of Mexico/Atlantic Region: &gt;1201 Elmwood Park Blvd, Room 90 &gt;New Orleans, LA 70123 http://www.gomr.mms.gov/ &gt; &gt;the Pacific: &gt;770 Paseo Camarillo &gt;Camarillo, CA 93010 http://www.mms.gov/omm/pacific/ &gt; &gt;or Alaska: &gt;949 E. 36th Ave. &gt;Anchorage, AK 99508 http://www.mms.gov/Alaska/ &gt; More detailed data sets and additional information can also be found at http://www.mms.gov/ld/Maps.htm The Official Protraction Diagram and Leasing Map Boundaries map layer is clipped for display in the online interactive National Atlas of the United States. ; {"gdaId" : 6065795}</note>
    <note displayLabel="Use limitation">None. Acknowledgment of the Minerals Management Service, the National Atlas of the United States of America, and (or) the U.S. Geological Survey would be appreciated in products derived from these data. The data were developed within the U.S. Government; no proprietary rights may be attached to them nor may they be sold to the U.S. Government as part of any procurement of ADP products or services.</note>
    <note displayLabel="WGS84 Cartographics">This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.</note>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Offshore oil and gas leases</topic>
    </subject>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Mines and mineral resources</topic>
    </subject>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Marine mineral resources</topic>
    </subject>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Continental margins</topic>
    </subject>
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    </subject>
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      <geographic>United States. Virgin Islands</geographic>
    </subject>
    <subject authority="geonames" lang="eng">
      <geographic authority="geonames" authorityURI="http://www.geonames.org/ontology#" valueURI="http://sws.geonames.org/3523271/">Mexico, Gulf of</geographic>
    </subject>
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      <geographic authority="geonames" authorityURI="http://www.geonames.org/ontology#" valueURI="http://sws.geonames.org/4566966/">Puerto Rico</geographic>
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      <topic authority="ISO19115TopicCategory" authorityURI="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_TopicCategoryCode" valueURI="oceans">Oceans</topic>
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      <topic authority="ISO19115TopicCategory" authorityURI="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_TopicCategoryCode" valueURI="boundaries">Boundaries</topic>
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      <topic authority="ISO19115TopicCategory" authorityURI="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_TopicCategoryCode" valueURI="utilitiesCommunication">Utilities and Communication</topic>
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    <accessCondition type="useAndReproduction">This item is in the public domain.  There are no restrictions on use.</accessCondition>
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