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    • Biogenic Silica and Carbon 14 Age Dates from Lake Victoria Cruise V95 Cores

    Metadata Updated: November 12, 2020

    The LLO operates in conjunction with the Limnological Research Center (LRC) in working towards fulfilling the objectives of the International Decade for the East African Lakes (IDEAL) to study the East African Lakes. The Lake Victoria project is funded by NSF. Like Lake Victoria, extensive work is being continued on Lake Malawi, Lake Turkana, and Lake Edward. In addition to the East African lakes, the LLO is working on Lake Issyk Kul', Lake Nicaragua, and Lake Superior. Summary: The Biogenic Silica Data file contains data for 5 cores taken from various sites in Lake Victoria. The data include ship, coring date, water depth, latitude/longitude, sampling device, sampled interval, % biogenic silica, and 14C dates. Cores were sampled at 10 cm intervals for biogenic silica analysis. Samples taken for 14C dating were prepared at the LRC Laboratory and sent to an outside AMS Facility for analysis. Pollen, charcoal, and plant macrofossils were dated. Biogenic Silica analysis was done using a timed, wet extraction technique adapted from D. J. DeMaster (1979). The analysis was done using 0.5 M NaOH at 85 0C.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date April 21, 2020
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 12, 2020
    Reference Date(s) November 3, 1997 (publication), November 3, 1997 (revision)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NGDC MGG Geology

    Other Data Resources

    Graphic Preview

    sample locations in study area

    Additional Metadata

    Resource Type Dataset
    Metadata Date April 21, 2020
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 12, 2020
    Reference Date(s) November 3, 1997 (publication), November 3, 1997 (revision)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ngdc.mgg.geology:G02885
    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., 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., Access to this dataset is unrestricted., Cite as: David J. DeMaster. 1997: Biogenic Silica and Carbon 14 Age Dates from Lake Victoria Cruise V95 Cores. First. NOAA National Centers for Environmental Information. Accessed [date]., 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.
    Bbox East Long 33.4553
    Bbox North Lat -0.4605
    Bbox South Lat -1.593
    Bbox West Long 32.8285
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview Description sample locations in study area
    Graphic Preview File https://www.ngdc.noaa.gov/mgg/image/geolin/preview94075001.gif
    Graphic Preview Type GIF
    Harvest Object Id 5e075617-0be9-4f94-aa1f-87d785529fa3
    Harvest Source Id 2738981c-0c63-4286-9da7-20abe8cd4700
    Harvest Source Title NGDC MGG Geology
    Licence Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
    Metadata Language
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System urn:ogc:def:crs:EPSG:4326
    Spatial Harvester True
    Temporal Extent Begin 1995-04-08
    Temporal Extent End 1995-04-12

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