gov.noaa.ngdc.mgg.geology:G02885 eng; USA utf8 dataset Carla J. Moore DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6339 (303) 497-6338 (303) 497-6513 NOAA/NESDIS/NGDC 325 Broadway Boulder CO 80305-3328 USA geology.info@noaa.gov 7:30 - 5:00 Mountain Contact Data Center pointOfContact 2012-09-14 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 registry European Petroleum Survey Group registry information urn:ogc:def:crs:EPSG:4326 6.18.3 Biogenic Silica and Carbon 14 Age Dates from Lake Victoria Cruise V95 Cores 19971103 creation 19971103 revision First D.J. DeMaster University of Minnesota, Large Lakes Observatory originator tableDigital Marine Geology and Geophysics (MGG) MGG 94075001 DeMaster, D.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. 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. D.J. DeMaster, University of Minnesota Large Lakes Observatory, with funding from the US National Science Foundation IDEAL project. completed Carla J. Moore DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6339 (303) 497-6338 (303) 497-6513 NOAA/NESDIS/NGDC 325 Broadway Boulder CO 80305-3328 USA geology.info@noaa.gov 7:30 - 5:00 Mountain Contact Data Center pointOfContact notPlanned http://www.ngdc.noaa.gov/mgg/image/geolin/preview94075001.gif sample locations in study area GIF Unknown project NASA/GCMD Earth Project Keywords 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 EARTH SCIENCE > Solid Earth > Rocks/Minerals > Sediments theme NASA/GCMD Earth Science Keywords LABORATORY SHIPS > SHIPS platform NASA/GCMD Platform Keywords CORING DEVICES SEDIMENT CORERS PISTON SAMPLERS instrument NASA/GCMD Instrument Keywords INFOTERRA > Subject Disciplines > Geology > Geology INFOTERRA > Subject Disciplines > Marine Geology > Marine Geology INFOTERRA > Subject Disciplines > Organic Chemistry > Organic Chemistry INFOTERRA > Subject Disciplines > Climate Studies theme INFOTERRA Keyword Thesaurus CIESIN > Environmental Protection > Environmental Monitoring CIESIN > Environmental Protection > Environmental Modeling > Climate Modeling CIESIN > Environmental Protection > Climate > Climate Change theme CIESIN Keyword Thesaurus WDC/MGG, BOULDER > World Data Center for Marine Geology and Geophysics, Boulder DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce dataCenter NASA/GCMD Data Center Keywords Continent > Africa place NASA/GCMD Location Keywords Please cite the original source when using these data. Disclaimer - 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. 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. false true Documentation for the null dataset. 19971103 creation Entities and attributes are completely described in a text file accompanying the dataset on download. ASCII Carla J. Moore DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6339 (303) 497-6338 (303) 497-6513 NOAA/NESDIS/NGDC 325 Broadway Boulder CO 80305-3328 USA geology.info@noaa.gov 7:30 - 5:00 Mountain Contact Data Center distributor free online download .03 http://www.ngdc.noaa.gov/mgg/geology/llo.html WWW:LINK-1.0-http--link Web Browser dataset information page Web page of information about the database including links to full documentation and free data download from NGDC. information http://www.ngdc.noaa.gov/mgg/geology/llo.html WWW:LINK-1.0-http--link Web Browser G02885 data download Web page of information about the database including links to full documentation and free data download from NGDC. download http://www.ngdc.noaa.gov/mgg/geolin/geolin.html WWW:LINK-1.0-http--link Web Browser search by set discovery via the NGDC marine geologic inventory search 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. NGDC performed basic out-of-range location testing. Lineage prior to transfer to NGDC is unknown. Received data from originator 1977-11-03T00:00:00 D.J. DeMaster, University of Minnesota, Large Lakes Observatory 2013-09-14 This metadata was automatically generated from the Content Standards for Digital Geospatial Metadata standard version FGDC-STD-001-1998 using the April 19th, 2011 version of the FGDC RSE to ISO 19115-2 transform. The record was hand edited on 2011-08-23 to include elements not created during the transformation. Carla J. Moore DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6339 (303) 497-6338 (303) 497-6513 NOAA/NESDIS/NGDC 325 Broadway Boulder CO 80305-3328 USA geology.info@noaa.gov 7:30 - 5:00 Mountain Contact Data Center custodian various 5 cores, piston NASA/Global Change Master Directory (GCMD) Platform Keywords 2008-02-05 publication NASA Global Change Master Directory (GCMD) User Support Office NASA Global Change Master Directory, Goddard Space Flight Center Greenbelt MD 20771 USA gcmduso@gcmd.gsfc.nasa.gov http://gcmd.nasa.gov/index.html http web browser NASA Global Change Master Directory (GCMD) Home Page information http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso custodian NASA Global Change Master Directory (GCMD) NASA Global Change Master Directory, Goddard Space Flight Center Greenbelt MD 20771 USA gcmduso@gcmd.gsfc.nasa.gov http://gcmd.nasa.gov/Resources/valids/ http web browser NASA Global Change Master Directory (GCMD) Keyword Page This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions. download http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso custodian SHIPS > SHIPS Various ships