Archive of Geosample Data and Information from the Columbia University Lamont-Doherty Earth Observatory (LDEO) Lamont-Doherty Core Repository (LDCR)
The Lamont-Doherty Core Repository (LDCR), operated by the Lamont-Doherty Earth Observatory
(LDEO) of Columbia University, 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. The LDCR contains one of the world's most unique and important
collection of scientific samples from the deep sea. Sediment cores from every major
ocean and sea are archived at the Core Repository. Materials available through the
NCEI archive (other than core metadata) are core photos and descriptions, both of
which were done at the time a core was opened; information/photos of what a core is
like now are available upon request. If you would like to request material from LDCR
holdings or want to know what other services are offered (grain size, coulometry,
MST, etc.), please check the LDCR website for more information.
- Cite as: Lamont-Doherty Core Repository (LDCR). 1977: Archive of Geosample Data and Information from the Columbia University Lamont-Doherty Earth Observatory (LDEO) Lamont-Doherty Core Repository (LDCR). NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5M61H7G. Accessed [date].
- doi:10.7289/V5M61H7G
- NCEI Metadata ID: gov.noaa.ngdc.mgg.geology:archived-data_LDEO-sample-repository
gov.noaa.ngdc.mgg.geology:archived-data_LDEO-sample-repository
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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 |
Dataset Point of Contact | The Lamont-Doherty Core Repository (LDCR) Lamont-Doherty Earth Observatory (LDEO) of Columbia University corelab@ldeo.columbia.edu |
Coverage Description | Global ocean sea floor and lakebeds |
Time Period | 1936-01-01T00:00:00.000Z to Present |
Spatial Reference System | urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
West:-180.00000
East:179.91700
South:-66.59330
North:86.18330
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Spatial Coverage Map |
General Documentation |
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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 Lamont-Doherty Core Repository (LDCR) is located in the Core Laboratory at the
Lamont-Doherty Earth Observatory in Palisades, New York, approximately 15 miles north
of the Columbia University main campus. Sediment cores and dredges from every major
world ocean and sea, rivers and lakes, are archived in the Core Repository. A great
number of cores in the archives were collected under the directive of Maurice Ewing,
Lamont's founder and first director, who insisted that "a core-a-day" be taken whenever
a Lamont vessel was at sea. As our ships criss-crossed across the oceans, he felt
that one might never again pass over that particular piece of ocean terrain, and the
opportunity to core should be taken for future researchers. Our irreplaceable global
collection of legacy material is the result of Ewing's vision of a "library" of cores.
The Lamont Repository is solely funded by the National Science Foundation Division
of Ocean Sciences. Dr. Floyd McCoy, former Curator of the LDCR, lead the group that
designed the original IMLGS.
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Purpose | The main purpose of the LDCR is to assure that geological samples are properly stored, described, preserved and available for use by qualified investigators from both inside and outside the institution. Data and information are archived at NCEI to promote public access to research results and to increase their discoverability via the IMLGS. |
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Theme keywords | Library of Congress Subject Headings
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Platform keywords | Global Change Master Directory (GCMD) Platform Keywords
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Instrument keywords | Global Change Master Directory (GCMD) Instrument Keywords
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Place keywords | Global Change Master Directory (GCMD) Location Keywords
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Project keywords | Global Change Master Directory (GCMD) Project Keywords
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Other Constraints | Cite as: Lamont-Doherty Core Repository (LDCR). 1977: Archive of Geosample Data and Information from the Columbia University Lamont-Doherty Earth Observatory (LDEO) Lamont-Doherty Core Repository (LDCR). NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5M61H7G. Accessed [date]. |
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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. NCEI informs the originator upon ingest of data to the IMLGS database, after which the originator provides one final quality control using the IMLGS map viewer. Data may also be updated/corrected at any time, at the originator's request. |
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Processing Environment | Native Dataset Environment: database tables with auxiliary text and PDF documents and digital imagery |
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Last Modified: 2022-05-05
For questions about the information on this page, please email:ncei.info@noaa.gov