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Curators of Marine & Lacustrine Geological Samples

Explore the 60-year history and current facilities of the Lamont Core Repository for marine geological samples. Access digitized core data and improve data mining for researchers. Future plans include enhancing data visualization and processing samples for non-destructive measurements.

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Curators of Marine & Lacustrine Geological Samples

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  1. Curators of Marine & Lacustrine Geological Samples May 3-6, 2009 Wakulla Sprngs Lodge Wakulla Spring State Park, Florida

  2. Lamont-Doherty Earth ObservatoryDeep-Sea Sample Repository 60 years of coring the ocean floor

  3. Locations of cores in the Lamont collection. Each dot on the map represents where a core was taken and archived in the Lamont Repository. Some of the cores have been so heavily sampled that only "residuals" of sediment remain, or data resulting from work on the cores.

  4. Core Repository Collection

  5. The present-day Core Laboratory housing the Core Repository.

  6. Storage of dry cores

  7. Dry storage trays: galvanized steel, 2.5” wide, 8 feet long. Racks are 9 ft tall, each holds 704 trays.

  8. Refrigerated storage of wet cores

  9. Wet tray storage began in 1985 -- 5 foot long, mostly 4.5” wide D-tubes. Racks are custom built, 10 ft tall. Each holds 296 trays. There are various widths and lengths of cores requiring many different storage systems.

  10. Residuals storage Unused or returned processed sample material is stored in hundreds of drawers installed wherever we can squeeze them in. There are close to 200,000 of these samples filed, most catalogued and on the web. For many older cores, only residuals remain for sampling.

  11. RepositoryFacilities Analog data is stored in nearly 1,000 ring binders dating to 1947. In addition to archive storage, the Repository facilities consist of a large laboratory, office and core library, physical properties lab, 2 technical offices, cutting/sampling room, X-radiography room, storage, and core splitting/photography area.

  12. The system of spltting, photographing and describing all cores was developed early in Lamont’s coring history. Core AT150-1 from Ewing’s first MAR cruise, 1947.

  13. Recently archived core: LWB1-12 The original concept is still in place. Continuity is the LDEO long suit.

  14. The Shipboard Core Log has been formalized. Additional work on cores is archived.

  15. All digitized since early 1970’s. Available on-line through NGDC,Lamont’s Repository Database, SESAR, and GeoMapApp.

  16. Metadata Management • All core data in analog format (Core Logs) • 60 years of core data digitized • Metadata sent to NGDC • Metadata being entered into new System for Earth Sample Registration (SESAR) • Metadata including Megascopic Descriptions available on LDEO Web and NGDC • Core Sample History being entered on LDEO Web • all core photos in digital format • Results of work on material available on WEB via GEOMAPAPP and/or NGDC

  17. Record of core taken in 1948 -- metadata and sample history Lamont’s first cores are from the ATLANTIS by way of an arrangement Ewing had with Woods Hole.

  18. Recording of sampling has been continuous. Sample history is available on-line for samples taken as early as 1960. More added as time is available.

  19. Lamont Coring Facts • ~85% of the collection was taken by 1979, driven by Ewing’s “A-Core-a-Day” dictum. • ~70% of the collection was taken when both VEMA and CONRAD were coring from 1962 through 1979. • Most of the above cores were destined to be archived and stored, unsampled, waiting for the day they would be called upon.

  20. Half of all samples currently distributed are from older, dry cores. VM29-191, North Atlantic, 1972

  21. Plans for the future

  22. Continued curation of the collection, addition of new cores and dredges, and maintenance of storage facilities and equipment.

  23. Expansion of the Lamont core Database to include searches for published cores, by coordinate and other known data. Location of cores in the Repository that have been cited in journal and book publications, visualized in the GeoMapApp browser (www.geomapapp.org). This figure shows 9,665 citations to individual cores between 1953 and 1999. The dot color in the map is coded to year of publication.

  24. Greater involvement with SESAR in assigning every item in the Repository a unique identifier

  25. Provide reconnaissance CaCO3 measurements on as yet un-sampled cores that have promise as excellent archives of past climate change in order to promote their use by the scientific community and improve the global coverage of our investigations

  26. Enhance data mining and visualization for users to simplify and improve use of legacy data. We plan to begin processing of descriptions into a tabulated format so that barrel sheets will be generated automatically including carbonate contents, photos, sensor track measurements, paleomagnetic measurements, isotope measurements, etc.

  27. Processing samples for researchers and undertaking non-destructive measurements on cores based on user requests.

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