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Archive of Geosample Data and Information from the University of Minnesota National Lacustrine Core Repository (LacCore)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2015-08-19T00:00:00.000+00:00
The National Lacustrine Core Repository (LacCore), operated by the University of Minnesota is a partner in the Index to Marine and Lacustrine Geological Samples (IMLGS) database, contributing information to the IMLGS to help researchers discover geological samples curated in their facility. The partner repository also sends related data, documents, and imagery to NCEI for long-term archive, but the originating institution is the definitive source of information related to their sample collection. LacCore has operated the National Lacustrine Core Repository since 2000, and now curates the world's largest and most diverse collection of lacustrine sediment cores. The biggest contributors (by core volume) are drilling projects, but small-volume projects outnumber the drilling campaigns by a factor of nearly 50. The vast majority of the curated materials are moist, cylindrical cores split in half, but unsplit cores, grab samples, dry cores, and a rapidly-growing number of rock cores, peat cores, freeze cores and permafrost cores round out the collection. The Repository also curates unused subsamples and sample residues for re-distribution and analysis. In addition to these physical holdings, LacCore captures metadata for all materials moving through the Facility; thus cores processed at LacCore but stored at other institutions are integrated among the physical holdings for the purpose of data discovery.

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Databases Scientific archives Electronic records Geology Rock and sediment lithology and mineralogy lacustrine sediments Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records > Sediments Earth Science > Paleoclimate > Ocean/Lake Records > Sediments In Situ Land-based Platforms In Situ Ocean-based Platforms In Situ/Laboratory Instruments > Corers > Coring Devices In Situ/Laboratory Instruments > Corers > Sediment Corers IMLGS ICSU-WDS > International Council for Science - World Data System DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce CONTINENT > AFRICA CONTINENT > AFRICA > EASTERN AFRICA > LAKE MALAWI CONTINENT > AFRICA > EASTERN AFRICA > LAKE TANGANYIKA CONTINENT > AFRICA > EASTERN AFRICA > LAKE VICTORIA CONTINENT > ASIA CONTINENT > AUSTRALIA/NEW ZEALAND CONTINENT > EUROPE CONTINENT > EASTERN EUROPE > RUSSIAN FEDERATION > LAKE BAYKAL CONTINENT > NORTH AMERICA CONTINENT > SOUTH AMERICA

Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
                                            {
  "fn": "Not provided - Contact data.gov",
  "hasEmail": "mailto:datagovsupport@gsa.gov"
}
describedByType application/octet-steam
description The National Lacustrine Core Repository (LacCore), operated by the University of Minnesota is a partner in the Index to Marine and Lacustrine Geological Samples (IMLGS) database, contributing information to the IMLGS to help researchers discover geological samples curated in their facility. The partner repository also sends related data, documents, and imagery to NCEI for long-term archive, but the originating institution is the definitive source of information related to their sample collection. LacCore has operated the National Lacustrine Core Repository since 2000, and now curates the world's largest and most diverse collection of lacustrine sediment cores. The biggest contributors (by core volume) are drilling projects, but small-volume projects outnumber the drilling campaigns by a factor of nearly 50. The vast majority of the curated materials are moist, cylindrical cores split in half, but unsplit cores, grab samples, dry cores, and a rapidly-growing number of rock cores, peat cores, freeze cores and permafrost cores round out the collection. The Repository also curates unused subsamples and sample residues for re-distribution and analysis. In addition to these physical holdings, LacCore captures metadata for all materials moving through the Facility; thus cores processed at LacCore but stored at other institutions are integrated among the physical holdings for the purpose of data discovery.
distribution 
                                            [
  {
    "@type": "dcat:Distribution",
    "title": "Metadata Landing Page",
    "mediaType": "placeholder/value",
    "description": "How to cite this data set (doi:10.7289/V5G73BP3), all access options, and complete documentation.",
    "downloadURL": "https://doi.org/10.7289/V5G73BP3",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Originator's Web page",
    "accessURL": "http://lrc.geo.umn.edu/laccore/repository.html",
    "description": "Documentation about the LacCore sample repository and information on requesting sample material.",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Archived files",
    "mediaType": "placeholder/value",
    "description": "Related offline geosample data files in the NCEI long-term archive",
    "downloadURL": "https://www.ngdc.noaa.gov/mgg/geology/data/g00028/archive/laccore_offline_archive_files.ods",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Web forms interface",
    "mediaType": "placeholder/value",
    "description": "Text interface to search and download data for LacCore samples from the
                           IMLGS database and access related links.",
    "downloadURL": "https://www.ngdc.noaa.gov/geosamples/index.jsp?inst=LacCore",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Map viewer",
    "mediaType": "placeholder/value",
    "description": "Open an ArcGIS interactive map interface with the LacCore sample layer active, to search and download
                           data from the IMLGS database and access related links.",
    "downloadURL": "https://maps.ngdc.noaa.gov/viewers/sample_index/index.html?institution=LacCore",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Linked data interface",
    "mediaType": "placeholder/value",
    "description": "Offsite Linked Data interface (RDF graph) for Semantic Web access to the database, offered cooperatively on the Rolling Deck to Repository (R2R) server.",
    "downloadURL": "http://linked.seabedsamples.org/page/imlgs/repository/LacCore",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Create a KML file",
    "mediaType": "placeholder/value",
    "description": "Dynamically create a KML file of sample locations with links back to the IMLGS database for full information.",
    "downloadURL": "https://www.ngdc.noaa.gov/geosamples/makekml.jsp?inst=LacCore&dbKml=facility_code=%27LacCore%27",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Open Data ArcGIS interface",
    "mediaType": "placeholder/value",
    "description": "Access sample information from the IMLGS using the Open Data ArcGIS interface enabling filtering, sorting, and export in multiple formats",
    "downloadURL": "http://opendata.arcgis.com/datasets/49908f2749c74831ab4845a5cea8a90d_0?geometry=139.395%2C-46.559%2C88.77%2C46.559&filterByExtent=true&uiTab=table&orderByFields=FACILITY_CODE+ASC&where=FACILITY_CODE+like+%27%25LacCore%25%27&basemap=secondary",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Parent Database",
    "mediaType": "placeholder/value",
    "description": "The parent IMLGS database contains more/related data and information.",
    "downloadURL": "https://dx.doi.org/10.7289/V5H41PB8",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Parent Archive",
    "mediaType": "placeholder/value",
    "description": "Information about the Marine Geology Data Archive at NCEI.",
    "downloadURL": "https://data.noaa.gov/metaview/page?xml=NOAA/NESDIS/NGDC/Collection/iso/xml/Marine_Geology.xml&view=getDataView&header=none",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Marine geology metadata records.",
    "mediaType": "placeholder/value",
    "downloadURL": "https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/MGG/Geology/iso/",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Library of Congress Subject Headings (LCSH)",
    "mediaType": "placeholder/value",
    "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.",
    "downloadURL": "http://id.loc.gov/authorities/subjects",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "SeaDataNet Common Vocabularies",
    "mediaType": "placeholder/value",
    "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.",
    "downloadURL": "http://www.seadatanet.org/Standards-Software/Common-Vocabularies",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "NAL Agricultural Thesaurus (NALT)",
    "mediaType": "placeholder/value",
    "description": "The US Department of Agriculture, National Agricultural Library's (NAL) Agricultural Thesaurus (NALT).",
    "downloadURL": "http://agclass.nal.usda.gov/",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "GCMD Keyword Forum Page",
    "mediaType": "placeholder/value",
    "description": "Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords",
    "downloadURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "NCEI Contact Information",
    "mediaType": "placeholder/value",
    "description": "Information for contacts at NCEI.",
    "downloadURL": "https://www.ncei.noaa.gov/contact",
    "describedByType": "application/octet-steam"
  }
]
identifier gov.noaa.ngdc.mgg.geology:archived-data_LacCore-sample-repository
isPartOf National Lacustrine Core Repository
issued 1996-12-31T00:00:00.000+00:00
keyword 
                                            [
  "Databases",
  "Scientific archives",
  "Electronic records",
  "Geology",
  "Rock and sediment lithology and mineralogy",
  "lacustrine sediments",
  "Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records > Sediments",
  "Earth Science > Paleoclimate > Ocean/Lake Records > Sediments",
  "In Situ Land-based Platforms",
  "In Situ Ocean-based Platforms",
  "In Situ/Laboratory Instruments > Corers > Coring Devices",
  "In Situ/Laboratory Instruments > Corers > Sediment Corers",
  "IMLGS",
  "ICSU-WDS > International Council for Science - World Data System",
  "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
  "DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce",
  "CONTINENT > AFRICA",
  "CONTINENT > AFRICA > EASTERN AFRICA > LAKE MALAWI",
  "CONTINENT > AFRICA > EASTERN AFRICA > LAKE TANGANYIKA",
  "CONTINENT > AFRICA > EASTERN AFRICA > LAKE VICTORIA",
  "CONTINENT > ASIA",
  "CONTINENT > AUSTRALIA/NEW ZEALAND",
  "CONTINENT > EUROPE",
  "CONTINENT > EASTERN EUROPE > RUSSIAN FEDERATION > LAKE BAYKAL",
  "CONTINENT > NORTH AMERICA",
  "CONTINENT > SOUTH AMERICA"
]
language 
                                            []
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2015-08-19T00:00:00.000+00:00
publisher 
                                            {
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
}
references 
                                            [
  "http://lrc.geo.umn.edu/laccore/repository.html",
  "https://dx.doi.org/10.7289/V5H41PB8",
  "https://data.noaa.gov/metaview/page?xml=NOAA/NESDIS/NGDC/Collection/iso/xml/Marine_Geology.xml&view=getDataView&header=none",
  "https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/MGG/Geology/iso/"
]
rights otherRestrictions, otherRestrictions, unclassified
spatial 178.30679,-54.6514,-179.93987,82.82983
temporal 1962-01-01T00:00:00+00:00/1962-01-01T00:00:00+00:00
title Archive of Geosample Data and Information from the University of Minnesota National Lacustrine Core Repository (LacCore)

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