@prefix dcat: . @prefix dct: . @prefix foaf: . @prefix gsp: . @prefix locn: . @prefix vcard: . @prefix xsd: . a dcat:Dataset ; dct:description "The Federal Outer Continental Shelf (OCS) Marine Mineral (e.g. sand and gravel) Lease Areas layer is maintained by the Bureau of Ocean Energy Management (BOEM), part of the U.S. Department of the Interior. Each lease area polygon defines an area where entities that have entered into or have requested a Negotiated Non-Competitive Lease or Memorandum of Agreement with BOEM can dredge sand, gravel, or shell resources from the OCS. Section 8 (k) of the OCS Lands Act (OCSLA), as amended by Public Law 103-426 (enacted in 1994), gives BOEM the authority to negotiate an agreement for the use of OCS sand, gravel, and shell resources for use in: (1) a project for shore protection, beach restoration, or coastal restoration undertaken by a Federal, State, or local government agency; or (2) for use in a construction project funded in whole or in part by, or authorized by, the Federal government. This dataset is a collection of active, completed, expired, and proposed lease areas under BOEM's purview. Attribution consists of OCS lease number, state, project ID, volume of material allocated, borrow area ID, leases status, and administrative chronology of the lease term (e.g. execution and expiration dates). Revisions to this dataset are made on a regular basis by BOEM staff to reflect the current status of OCS marine mineral leasing activity." ; dct:identifier "CD77111F-0D69-44FD-BF49-0650EB9641DC_1" ; dct:issued "2025-11-22T20:13:35.273822"^^xsd:dateTime ; dct:modified "2022-03-04"^^xsd:date ; dct:publisher ; dct:spatial [ a dct:Location ; locn:geometry "POLYGON ((-93.6099 25.6805, -73.9099 25.6805, -73.9099 40.0488, -93.6099 40.0488, -93.6099 25.6805))"^^gsp:wktLiteral ] ; dct:title "Federal Outer Continental Shelf (OCS) Sand and Gravel Borrow Areas (Lease Areas)" ; dcat:contactPoint [ a vcard:Organization ; vcard:fn "U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program (Point of Contact)" ; vcard:hasEmail ] ; dcat:distribution , , , , , ; dcat:keyword "amerigeo", "amerigeoss", "atlantic-ocean", "bureau-of-ocean-energy-management", "ckan", "competitive-lease-agreement", "deep-ocean-mining-environmental-study", "geo", "geographic-region", "geology", "geology-theme", "geoss", "global-ocean", "gulf-of-mexico", "international-decade-of-ocean-exploration", "major-elements", "marine-geochemistry", "marine-geology", "marine-minerals", "marine-minerals-program-geographic-information-system", "marine-sediments", "metals", "mineral-resources", "minor-elements", "national", "national-geospatial-data-assets", "natural-resources", "ngda", "non-energy-minerals", "north-america", "north-atlantic-ocean", "ocean", "ocs", "outer-continental-shelf", "research", "sea-floor", "seabed-and-subsurface-characterization", "sediment-characteristics", "sediments", "shoal", "sonar", "study", "substrate", "subsurface", "trace-elements", "united-states", "vertical-location", "water-depth" ; dcat:theme <%7Bgeospatial%7D> . a dcat:Distribution ; dct:description "The Library of Congress Subject Headings (LCSH) are part of a Linked Data Service, actively maintained since 1898 to catalog materials held at the Library of Congress." ; dct:issued "2022-07-28T21:53:54.212938"^^xsd:dateTime ; dct:modified "2025-11-22T20:13:35.249339"^^xsd:dateTime ; dct:title "Library of Congress Subject Headings (LCSH)" ; dcat:accessURL . a dcat:Distribution ; dct:description "The SeaDataNet Vocabulary Server is populated with lists describing a wide range of entities relevant to marine metadata and data such as parameters, sea area names, platform classes, instrument types, and so on." ; dct:issued "2022-07-28T21:53:54.212935"^^xsd:dateTime ; dct:modified "2025-11-22T20:13:35.248888"^^xsd:dateTime ; dct:title "SeaDataNet Common Vocabularies" ; dcat:accessURL . a dcat:Distribution ; dct:description "The metadata original source" ; dct:format "XML" ; dct:issued "2022-07-28T21:53:54.212947"^^xsd:dateTime ; dct:modified "2025-11-22T20:13:35.250532"^^xsd:dateTime ; dct:title "Original Metadata" ; dcat:accessURL ; dcat:mediaType "text/xml" . a dcat:Distribution ; dct:description "The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords." ; dct:issued "2022-07-28T21:53:54.212941"^^xsd:dateTime ; dct:modified "2025-11-22T20:13:35.249749"^^xsd:dateTime ; dct:title "Global Change Master Directory (GCMD) Keywords" ; dcat:accessURL . a dcat:Distribution ; dct:description "The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords." ; dct:issued "2022-07-28T21:53:54.212944"^^xsd:dateTime ; dct:modified "2025-11-22T20:13:35.250137"^^xsd:dateTime ; dct:title "Global Change Master Directory (GCMD) Keywords" ; dcat:accessURL . a dcat:Distribution ; dct:description "The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords." ; dct:issued "2022-07-28T21:53:54.212928"^^xsd:dateTime ; dct:modified "2025-11-22T20:13:35.248456"^^xsd:dateTime ; dct:title "Global Change Master Directory (GCMD) Keywords" ; dcat:accessURL . a foaf:Agent ; foaf:name "US Migrating" .