gov.noaa.ngdc.mgg.geology:G02885 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact 2020-04-21 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) point European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group http://www.epsg-registry.org/ European Petroleum Survey Group Geodetic Parameter Dataset Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. search urn:ogc:def:crs:EPSG:4326 6.18.3 Biogenic Silica and Carbon 14 Age Dates from Lake Victoria Cruise V95 Cores 1997-11-03 publication 1997-11-03 revision First David J. DeMaster Department of Marine, Earth and Atmospheric Sciences, North Carolina State University 2800 Faucette Drive, Jordan Hall Campus Box 8208 Raleigh, NC 27695-8208 demaster@ncsu.edu http://www.meas.ncsu.edu/ WWW:LINK-1.0-http--link Web Browser http://www.meas.ncsu.edu/ Contributors web site information author NOAA National Centers for Environmental Information publisher tableDigital Marine Geology and Geophysics (MGG) MGG 94075001 DeMaster, David J. (1979), The Marine Budgets of Silica and 32Si. Ph. D. Thesis, Yale University. pp 246-264. Johnson, T. C., C. A. Scholz, M. R. Talbot, K. Kelts, R. D. Ricketts, G.Ngobi, K. Beuning, I. Ssemmanda and J. McGill, 1996. Late Pleistocene desiccation of Lake Victoria and rapid evolution of cichlid fishes.Science, v.273, p. 1091-1093...Beuning, K., K. Kelts and T. C. Johnson, in press. Paleohydrology of Lake Victoria, East Africa inferred from 18O/16O ratios in sediment cellulose. Geology.Johnson, T. C., Y. Chan, K. Beuning, K. Kelts, G. Ngobi and D. Verschuren, in press. Biogenic silica profiles in Holocene cores from Lake Victoria:implications for lake level history and initiation of the Victoria Nile. In: Lehman, J. T. (Editor), Environmental Change and Response in East African Lakes. Kluwer Press, Amsterdam.Verschuren, D., D. N. Edgington, H. J. Kling and T. C. Johnson, in press. The eutrophication of Lake Victoria: sedimentary signals at offshore stations. Journal of Gt. Lakes Research.Scholz, C. A., T. C. Johnson, P. Cattaneo, H. Malinga and S. Shana, in press. Initial results of 1995 IDEAL seismic reflection survey of LakeVictoria, Uganda and Tanzania. In: Lehman, J. T. (Editor), Environmental Change and Response in East African Lakes. Kluwer Press, Amsterdam.Data produced by: Large Lakes Observatory, University of Minnesota, Duluth, 213 Research Laboratory Building, 2205 East 5th Street, Duluth, MN 55812-2401email: tcj@d.umn.edu http://www.d.umn.edu/llo/ 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. paleoenvironmental studies Dr. David J. DeMaster, University of Minnesota Large Lakes Observatory, with funding from the US National Science Foundation IDEAL project. completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA National Centers for Environmental Information Marine Geology Data Manager 325 Broadway, Mail Code E/NE42 Boulder CO 80305-3328 USA geology.info@noaa.gov pointOfContact notPlanned Completed data set, no additions planned. https://www.ngdc.noaa.gov/mgg/image/geolin/preview94075001.gif sample locations in study area GIF Unknown ICSU-WDS > International Council for Science - World Data System project Global Change Master Directory (GCMD) Project Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. 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URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Scientific archives Electronic records Geology theme Library of Congress Subject Headings US Library of Congress http://id.loc.gov/authorities/subjects http web browser Library of Congress Subject Headings (LCSH) 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. information resourceProvider lacustrine sediments theme USDA National Agricultural Library's Agricultural Thesaurus (NALT) USDA National Agricultural Library http://agclass.nal.usda.gov/ http web browser NAL Agricultural Thesaurus (NALT) The US Department of Agriculture, National Agricultural Library's (NAL) Agricultural Thesaurus (NALT). information resourceProvider Earth Science > Paleoclimate > Ocean/Lake Records > Sediments Earth Science > PALEOCLIMATE > Ocean/Lake Records > Isotopes Earth Science > PALEOCLIMATE > Ocean/Lake Records > Radiocarbon Earth Science > PALEOCLIMATE > Ocean/Lake Records > Stratigraphic Sequence theme Global Change Master Directory (GCMD) Science Keywords 2024 revision 19 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page 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 information custodian In Situ Ocean-based Platforms > Ships platform Global Change Master Directory (GCMD) Platform Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page 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 information custodian In Situ/Laboratory Instruments > Corers > Coring Devices In Situ/Laboratory Instruments > Corers > Sediment Corers instrument Global Change Master Directory (GCMD) Instrument Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page 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 information custodian CIESIN > Environmental Protection > Environmental Modeling > Climate Modeling CIESIN > Environmental Protection > Climate > Climate Change theme CIESIN Keyword Thesaurus 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 dataCenter Global Change Master Directory (GCMD) Data Center Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page 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 information custodian CONTINENT > AFRICA > EASTERN AFRICA > LAKE VICTORIA place Global Change Master Directory (GCMD) Location Keywords 2024 revision 19 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page 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 information custodian otherRestrictions 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. otherRestrictions 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. otherRestrictions Access to this dataset is unrestricted. otherRestrictions 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]. Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States. otherRestrictions 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. unclassified The Marine Budgets of Silica and 32Si 1979-12-31 publication David J. DeMaster author documentHardcopy Yale University Ph. D. Thesis DeMaster, D.J. (1979) , The Marine Budgets of Silica and 32Si. Ph. D. Thesis, Yale University. pp 246-264. crossReference study Late Pleistocene desiccation of Lake Victoria and rapid evolution of cichlid fishes 1996-12-31 publication Johnson, T.C., et al. author documentHardcopy Science v. 273 Johnson, T. C., C. A. Scholz, M. R. Talbot, K. Kelts, R. D. Ricketts, G. Ngobi, K. Beuning, I. Ssemmanda and J. McGill, 1996. Late Pleistocene desiccation of Lake Victoria and rapid evolution of cichlid fishes. Science, v.273, p. 1091-1093. crossReference study Paleohydrology of Lake Victoria, East Africa inferred from 18O/16O ratios in sediment cellulose 1996-12-31 publication >Beuning, K., et al. author documentHardcopy Geology in press Beuning, K., K. Kelts and T. C. Johnson, in press. Paleohydrology of Lake Victoria, East Africa inferred from 18O/16O ratios in sediment cellulose. Geology. crossReference study Biogenic silica profiles in Holocene cores from Lake Victoria: implications for lake level history and initiation of the Victoria Nile 1996-12-31 publication Johnson, T.C., et al. author documentHardcopy Environmental Change and Response in East African Lakes in press Johnson, T. C., Y. Chan, K. Beuning, K. Kelts, G. Ngobi and D. Verschuren, in press. Biogenic silica profiles in Holocene cores from Lake Victoria: implications for lake level history and initiation of the Victoria Nile. In: Lehman, J. T. (Editor), Environmental Change and Response in East African Lakes. Kluwer Press, Amsterdam. crossReference study The eutrophication of Lake Victoria: sedimentary signals at offshore stations 1996-12-31 publication Verschuren, D., et al. author documentHardcopy Journal of Great Lakes Research in press Verschuren, D., D. N. Edgington, H. J. Kling and T. C. Johnson, in press. The eutrophication of Lake Victoria: sedimentary signals at offshore stations. Journal of Gt. Lakes Research. crossReference study Initial results of 1995 IDEAL seismic reflection survey of Lake Victoria, Uganda and Tanzania 1996-12-31 publication >Scholz, C.A., et al. author documentHardcopy Environmental Change and Response in East African Lakes. Kluwer Press, Amsterdam in press Scholz, C. A., T. C. Johnson, P. Cattaneo, H. Malinga and S. Shana, in press. Initial results of 1995 IDEAL seismic reflection survey of Lake Victoria, Uganda and Tanzania. In: Lehman, J. T. (Editor), Environmental Change and Response in East African Lakes. Kluwer Press, Amsterdam. crossReference study Index to Marine and Lacustrine Geological Samples (IMLGS) 1977-12-31 publication doi:10.7289/V5H41PB Curators of Marine and Lacustrine Geological Samples author https://dx.doi.org/10.7289/V5H41PB8 WWW:LINK-1.0-http--link Web Browser Parent Database The parent IMLGS database contains more/related data and information. information largerWorkCitation project NCEI Marine Geology Data Archive 1977-12-31 NOAA National Centers for Environmental Information resourceProvider https://data.noaa.gov/metaview/page?xml=NOAA/NESDIS/NGDC/Collection/iso/xml/Marine_Geology.xml&view=getDataView&header=none WWW:LINK-1.0-http--link Web Browser Parent Archive Information about the Marine Geology Data Archive at NCEI. information largerWorkCitation collection Paleoclimatology Datasets NOAA National Centers for Environmental Information resourceProvider https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets WWW:LINK-1.0-http--link Web Browser Related NCEI Archive Information about the Paleoclimatology Data Archive at NCEI. information largerWorkCitation collection NOAA/NCEI Marine Geology WAF 2015-10-05 NOAA National Centers for Environmental Information author https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/MGG/Geology/iso/ WWW:LINK-1.0-http--link Web Browser Marine geology metadata records. search crossReference collection vector eng; USA UTF8 geoscientificInformation oceans Native Dataset Environment: ASCII text Lake Victoria, East Africa 32.8285 33.4553 -1.593 -0.4605 Sample Collection Dates 1995-04-08 1995-04-12 -69 -60 Biogenic Silica analysis was done using a timed, wet extraction technique adapted from DeMaster, D.J. (1979), The Marine Budgets of Silica and 32Si. Ph. D. Thesis, Yale University. pp 246-264. . The analysis was done using 0.5 M NaOH at 85 0C. The Latitude and Longitude (point) from which a sample of sediment or rock was collected from the sea floor or a lakebed. point Latitude Distance measured north or south from the equator. Distance north is positive, distance south is negative. 90.00000 -90.00000 decimal degrees decimal degrees Longitude Longitude is measured from the Prime Meridian (which is the north/south line that runs through Greenwich, England), values measured east are positive and values measured west are negative. 180.00000 -180.00000 decimal degrees decimal degrees false true Documentation for the Biogenic Silica and Carbon 14 Age Dates from Lake Victoria Cruise V95 Cores dataset. 1997-11-03 creation Entities and attributes are completely described in a text file accompanying the dataset on download. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor 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. Contact NCEI for other distribution options and instructions. ASCII UTF-8 American Standard Code for Information Interchange (ASCII) text format. tar.gz unknown compressed Tape ARchive file https://data.noaa.gov/metaview/page?xml=NOAA/NESDIS/NGDC/MGG/Geology/iso/xml/G02885.xml&view=getDataView&header=none WWW:LINK-1.0-http--link Web Browser Metadata Landing Page Information about the data set, all access options, and complete documentation. information https://www.ngdc.noaa.gov/mgg/geology/data/g02885/ WWW:LINK-1.0-http--link Web Browser Data files and documentation All originator's data and documentation. download dataset gov.noaa.ngdc.mgg.geology:G02885 Horizontal Positional Accuracy The horizontal accuracy of data values is approximately .001 degree of latitude/longitude. Reliability Quality control was performed by the originator. NCEI performed basic out-of-range location testing. lineage prior to transfer to NCEI is unknown. Received data from originator 1977-11-03T00:00:00 D.J. DeMaster, University of Minnesota, Large Lakes Observatory repository NOAA National Centers for Environmental Information 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. 2015-04-22T00:00:00 asNeeded Modified for compliance to NCEI Template v1.2. various 5 cores, piston In Situ Ocean-based Platforms > SHIPS Various ocean-based and lake-based ships, boats, remotely operated vehicles, submersibles, and other unspecified types of platforms