Skip to main content
Dataset Overview | National Centers for Environmental Information (NCEI)

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

browse graphicimage of sea floor sample locations
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.
  • Cite as: University of Minnesota National Lacustrine Core Repository (LacCore). 1996: Archive of Geosample Data and Information from the University of Minnesota National Lacustrine Core Repository (LacCore). NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5G73BP3. Accessed [date].
  • doi:10.7289/V5G73BP3
  • NCEI Metadata ID: gov.noaa.ngdc.mgg.geology:archived-data_LacCore-sample-repository
gov.noaa.ngdc.mgg.geology:archived-data_LacCore-sample-repository
Full Text · XML
Search Data
  • Map viewer (search)
    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.
  • Linked data interface (search)
    Offsite Linked Data interface (RDF graph) for Semantic Web access to the database, offered cooperatively on the Rolling Deck to Repository (R2R) server.
  • Open Data ArcGIS interface (search)
    Access sample information from the IMLGS using the Open Data ArcGIS interface enabling filtering, sorting, and export in multiple formats
Download Data
  • Web forms interface (download)
    Text interface to search and download data for LacCore samples from the IMLGS database and access related links.
Distribution Formats
  • ASCII (Version: UTF-8)
    • File Specification: American Standard Code for Information Interchange (ASCII) text format.
  • KML
    • File Specification: Keyhole Markup Language File
  • JPEG
    • File Specification: Joint Photographic Experts Group Image Format
  • PDF
    • File Specification: Portable Document Format
Ordering Instructions Contact NCEI for other distribution options and instructions.
Distributor NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact Marine Geology Data Manager
NOAA National Centers for Environmental Information
geology.info@noaa.gov
Coverage Description Global lakebeds, estuarine, wetland, and riverine areas.
Time Period 1962-01-01T00:00:00.000Z to Present
Spatial Reference System urn:ogc:def:crs:EPSG:4326
Spatial Bounding Box Coordinates
West: -179.93987
East: 178.30679
South: -54.6514
North: 82.82983
Spatial Coverage Map
General Documentation
  • Metadata Landing Page
    How to cite this data set (doi:10.7289/V5G73BP3), all access options, and complete documentation.
  • Originator's Web page
    Documentation about the LacCore sample repository and information on requesting sample material.
  • Archived files
    Related offline geosample data files in the NCEI long-term archive
Associated Resources
  • National Lacustrine Core Repository
  • Index to Marine and Lacustrine Geological Samples (IMLGS)
    • Parent Database
      The parent IMLGS database contains more/related data and information.
  • NCEI Marine Geology Data Archive
    • Parent Archive
      Information about the Marine Geology Data Archive at NCEI.
  • NOAA/NCEI Marine Geology WAF
Publication Dates
  • publication: 1996-12-31
  • revision: 2015-08-19
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Ongoing - data is continually being updated
Historical archive - data has been stored in an offline storage facility
Data Update Frequency Irregular - The repository contributes data to the NCEI archive and to the IMLGS as new samples are added to their collection and/or as new sample data are available for public release.
Supplemental Information
The repository is located at the Twin Cities campus of the University of Minnesota. The facility consists of an open, state of the art Core Lab with a 200 cubic meter coolroom space for archival cold storage (4 degrees C) of split cores in D-tubes. There is also space for dry, room temperature storage of unsplit, dry cores in Lane Cabinets. For sampling projects, LacCore provides space adjacent to the coldroom storage, equipped with sampling tables, standard sample vials and tools. Cores may also be transported to the LRC Core Lab for study and sampling. The repository archives cores from several expeditions in North America, South America, Europe, and Africa. The collection encompasses short (~1m) gravity cores, mid-length (~6-10m) piston cores, and very long (>200m) drill cores. All cores are available for study by qualified individuals after a moratorium period following sample collection (see the LacCore web site for policies).
Additonal related data and information are available directly from the contributing institution, which is the authoritative and most current source of data and information related to their sample collection. The IMLGS contains a subset of summary metadata from the institutional database.
Purpose LacCore is the US National Lacustrine Core Repository operated with grants from the National Science Foundation to the Limnological Research Center (LRC) and the Large Lakes Observatory (LLO) at the University of Minnesota. The mission of LacCore is to curate sediment cores from lakes around the world and archive the data for use by the global community of scientists interested in unlocking the secrets of past environment and climate in lake sediment cores. Data and information are archived at NCEI to promote public access to research results and to increase their discoverability via the IMLGS.
Use Limitations
  • Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
Dataset Citation
  • Cite as: University of Minnesota National Lacustrine Core Repository (LacCore). 1996: Archive of Geosample Data and Information from the University of Minnesota National Lacustrine Core Repository (LacCore). NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5G73BP3. Accessed [date].
Cited Authors
  • University of Minnesota National Lacustrine Core Repository (LacCore)
Originators
  • Dr. Anders Noren
    University of Minnesota National Lacustrine Core Repository (LacCore)
Custodians
  • NOAA National Centers for Environmental Information
Sponsors
  • National Science Foundation (NSF)
Points of Contact
  • Kristina Brady
    University of Minnesota National Lacustrine Core Repository (LacCore)
Publishers
  • NOAA National Centers for Environmental Information
Acknowledgments
  • The National Lacustrine Core Repository (LacCore) receives substantial support from the U.S. National Science Foundation.
Theme keywords Library of Congress Subject Headings
  • Databases
  • Scientific archives
  • Electronic records
  • Geology
SeaDataNet Common Vocabularies
  • Rock and sediment lithology and mineralogy
USDA National Agricultural Library's Agricultural Thesaurus (NALT)
  • lacustrine sediments
Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records > Sediments
  • Earth Science > Paleoclimate > Ocean/Lake Records > Sediments
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • 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
Platform keywords Global Change Master Directory (GCMD) Platform Keywords
  • In Situ Land-based Platforms
  • In Situ Ocean-based Platforms
Instrument keywords Global Change Master Directory (GCMD) Instrument Keywords
  • In Situ/Laboratory Instruments > Corers > Coring Devices
  • In Situ/Laboratory Instruments > Corers > Sediment Corers
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • 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
Project keywords Global Change Master Directory (GCMD) Project Keywords
  • IMLGS
Global Change Master Directory (GCMD) Project Keywords
  • ICSU-WDS > International Council for Science - World Data System
Use Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
  • Please consult the Curator before proposing to do research on any sample discovered through the IMLGS or the NCEI archive.
  • While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
  • Sample metadata and most data/images are available online for free download. Additional, full-resolution images from the offline archive may be available. Contact NCEI for more information.
Other Constraints Cite as: University of Minnesota National Lacustrine Core Repository (LacCore). 1996: Archive of Geosample Data and Information from the University of Minnesota National Lacustrine Core Repository (LacCore). NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5G73BP3. Accessed [date].
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Lineage Statement Data are received by NCEI on an intermittent basis from the repository. Incoming data are checked for adherence to controlled vocabularies, illegal data types in numeric fields, and out of range latitudes/longitudes. NCEI adds IGSNs/links to related resources, where known, and may perform cursory visual inspection of data for reasonableness, asking the originator for guidance on discrepancies. Preliminary processed data are placed in a test database for inspection by the originator, and iteratively corrected until the originator approves their publication to the production database. Data may also be updated/corrected at any time, at the originator's request.
Processor
  • NOAA National Centers for Environmental Information
Processing Environment Native Dataset Environment: database tables with auxiliary text and PDF documents and digital imagery.
Source Datasets
  • LacCore Sample Repository Database
    • Description of Source: Metadata for the entire (physical and virtual) LacCore collection are made available for discovery through multiple means. Online tables with a selection of metadata and equivalent spreadsheet files for download are regularly updated on the LacCore website, and from these a .kml file is generated that allows geographical views and searches through the holdings with Google Earth software. LacCore also continues the process of transferring both project metadata and data generated at the Facility (core images, multisensor logs, core description sheets) to the Index to Marine and Lacustrine Geological Samples, an online database and permanent virtual archive of sea floor and lakebed samples sponsored by NCEI and NSF to help researchers locate existing samples.
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • In Situ/Laboratory Instruments
Platform
  • In Situ Ocean-based Platforms > SHIPS
Last Modified: 2020-04-21
For questions about the information on this page, please email: ncei.info@noaa.gov