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Biogenic Silica and Carbon 14 Age Dates from Lake Victoria Cruise V95 Cores
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    dateStamp:  2015-06-24
    metadataStandardName:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
    metadataStandardVersion:  ISO 19115-2:2009(E)
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                title:  European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
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                    date:  2008-11-12
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            code:  urn:ogc:def:crs:EPSG:4326
            version:  6.18.3
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        citation:  (CI_Citation)
            title:  Biogenic Silica and Carbon 14 Age Dates from Lake Victoria Cruise V95 Cores
            date:  (CI_Date)
                date:  1997-11-03
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                date:  1997-11-03
                dateType:  (CI_DateTypeCode) revision
            edition:  First
            citedResponsibleParty:  (CI_ResponsibleParty)
                individualName:  David J. DeMaster
                organisationName:  Department of Marine, Earth and Atmospheric Sciences, North Carolina State University
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                        deliveryPoint:  2800 Faucette Drive, Jordan Hall Campus Box 8208
                        city:  Raleigh, NC
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                        electronicMailAddress:  demaster@ncsu.edu
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                organisationName:  National Geophysical Data Center, NOAA
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                name:  Marine Geology and Geophysics (MGG)
                issueIdentification:  MGG 94075001
            otherCitationDetails:  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/
        abstract:  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.
        purpose:  paleoenvironmental studies
        credit:  Dr. David J. DeMaster, University of Minnesota Large Lakes Observatory, with funding from the US National Science Foundation IDEAL project.
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            otherConstraints:  Access to this dataset is unrestricted.
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            useLimitation:  Please cite the originator of the data set, the date downloaded, and the National Centers for Environmental Information, NOAA, as the source of the data.
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            otherConstraints:  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.
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                title:  DeMaster, D.J. (1979) , The Marine Budgets of Silica and 32Si. Ph. D. Thesis, Yale University. pp 246-264.
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                title:  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.
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                title:  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.
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                title:  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.
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                title:  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.
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                title:  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.
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                title: (inapplicable)
                date:  (CI_Date)
                    date:  2015-06-24
                    dateType:  (CI_DateTypeCode)
                identifier:  (MD_Identifier)
                    code:
                      Anchor:  Paleoclimate Paleoclimate data
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  National Centers for Environmental Information, NOAA
                    role:  (CI_RoleCode) resourceProvider
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (inapplicable)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage:  https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets
                            protocol:  WWW:LINK-1.0-http--link
                            applicationProfile:  Web Browser
                            name:  Related NCEI Archive
                            description:  Information about the Paleoclimatology Data Archive at NCEI.
                            function:  (CI_OnLineFunctionCode) information
                    role: (inapplicable)
            aggregateDataSetIdentifier:  (MD_Identifier)
                code:
                  Anchor:  Paleoclimate Paleoclimate data
            associationType:  (DS_AssociationTypeCode) largerWorkCitation
            initiativeType:  (DS_InitiativeTypeCode) collection
        spatialRepresentationType:  (MD_SpatialRepresentationTypeCode) vector
        spatialResolution: (missing)  (MD_Resolution)
            equivalentScale:
        language:
          LanguageCode:  eng; USA
        characterSet:  (MD_CharacterSetCode) UTF8
        topicCategory:  (MD_TopicCategoryCode) geoscientificInformation
        topicCategory:  (MD_TopicCategoryCode) oceans
        environmentDescription:  Native Dataset Environment: ASCII text
        extent:  (EX_Extent)
            description:  Lake Victoria, East Africa
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  32.8285
                eastBoundLongitude:  33.4553
                southBoundLatitude:  -1.593
                northBoundLatitude:  -0.4605
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    description:  Sample Collection Dates
                    beginPosition:  1995-04-08
                    endPosition:  1995-04-12
            verticalElement:  (EX_VerticalExtent)
                minimumValue:
                  Real:  -69
                maximumValue:
                  Real:  -60
                verticalCRS: (missing)
        supplementalInformation:  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.
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    contentInfo:  (MD_CoverageDescription)
        attributeDescription:
          RecordType:  The Latitude and Longitude (point) from which a sample of sediment or rock was collected from the sea floor or a lakebed.
        contentType:  (MD_CoverageContentTypeCode) point
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  Latitude
                attributeType: (unknown)
            descriptor:  Distance measured north or south from the equator. Distance north is positive, distance south is negative.
            maxValue:
              Real:  90.00000
            minValue:
              Real:  -90.00000
            units:
              UnitDefinition:
                identifier:  decimal degrees
                name:  decimal degrees
        dimension:  (MD_Band)
            sequenceIdentifier:
              MemberName:
                aName:  Longitude
                attributeType: (unknown)
            descriptor:  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.
            maxValue:
              Real:  180.00000
            minValue:
              Real:  -180.00000
            units:
              UnitDefinition:
                identifier:  decimal degrees
                name:  decimal degrees
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    contentInfo:  (MD_FeatureCatalogueDescription)
        complianceCode:  false
        includedWithDataset:  true
        featureTypes:
          LocalName:
        featureCatalogueCitation:  (CI_Citation)
            title:  Documentation for the Biogenic Silica and Carbon 14 Age Dates from Lake Victoria Cruise V95 Cores dataset.
            date:  (CI_Date)
                date:  1997-11-03
                dateType:  (CI_DateTypeCode) creation
            otherCitationDetails:  Entities and attributes are completely described in a text file accompanying the dataset on download.
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    distributionInfo:  (MD_Distribution)
        distributionFormat:  (MD_Format)
            name:  ASCII
            version:  UTF-8
            specification:  American Standard Code for Information Interchange (ASCII) text format.
        distributionFormat:  (MD_Format)
            name:  tar.gz
            version:  unknown
            specification:  compressed Tape ARchive file
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                positionName:  Data Manager
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  (303) 497-6338
                        facsimile:  (303) 497-6513
                    address:  (CI_Address)
                        deliveryPoint:  325 Broadway, Mail Code E/GC3
                        city:  Boulder
                        administrativeArea:  CO
                        postalCode:  80305-3328
                        country:  USA
                        electronicMailAddress:  geology.info@noaa.gov
                    hoursOfService:  7:30 - 5:00 Mountain
                role:  (CI_RoleCode) distributor
            distributionOrderProcess:  (MD_StandardOrderProcess)
                fees:  free online download
        transferOptions:  (MD_DigitalTransferOptions)
            transferSize:
              Real:  .03
            onLine:  (CI_OnlineResource)
                linkage: http://www.ngdc.noaa.gov/docucomp/page?xml=NOAA/NESDIS/NGDC/MGG/Geology/iso/xml/G02885.xml&view=getDataView&header=none
                protocol:  WWW:LINK-1.0-http--link
                applicationProfile:  Web Browser
                name:  Publisher's landing page
                description:  Information about the data set, all access options, and complete documentation.
                function:  (CI_OnLineFunctionCode) information
            onLine:  (CI_OnlineResource)
                linkage:  https://www.ngdc.noaa.gov/mgg/geology/data/g02885/
                protocol:  WWW:LINK-1.0-http--link
                applicationProfile:  Web Browser
                name:  Data files and documentation
                description:  All originator's data and documentation.
                function:  (CI_OnLineFunctionCode) download
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
            extent:  #boundingExtent
            levelDescription:  (MD_ScopeDescription)
                dataset:  gov.noaa.ngdc.mgg.geology:G02885
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Horizontal Positional Accuracy
            measureDescription: (unknown)
            evaluationMethodDescription:  The horizontal accuracy of data values is approximately .001 degree of latitude/longitude.
            result: (unknown)
        report:  (DQ_QuantitativeAttributeAccuracy)
            nameOfMeasure:  Reliability
            measureDescription: (unknown)
            evaluationMethodDescription:  Quality control was performed by the originator. NCEI performed basic out-of-range location testing.
            result: (unknown)
        lineage:  (LI_Lineage)
            statement:  lineage prior to transfer to NCEI is unknown.
            processStep:  (LI_ProcessStep)
                description:  Received data from originator
                dateTime:
                  DateTime:  1977-11-03T00:00:00
            source:  (LI_Source)
                description:  D.J. DeMaster, University of Minnesota, Large Lakes Observatory
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) annually
        dateOfNextUpdate:  2016-06-24
        maintenanceNote:  Metadata Review Date: 2016-06-24
        contact:  (CI_ResponsibleParty)
            organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
            positionName:  Marine Geology Data Manager
            contactInfo:  (CI_Contact)
                phone:  (CI_Telephone)
                    voice:  (303) 497-6339
                    facsimile:  (303) 497-6513
                address:  (CI_Address)
                    deliveryPoint:  325 Broadway, Mail Code E/GC3
                    city:  Boulder
                    administrativeArea:  CO
                    postalCode:  80305-3328
                    country:  USA
                    electronicMailAddress:  geology.info@noaa.gov
                hoursOfService:  7:30 - 5:00 Mountain
            role:  (CI_RoleCode) custodian
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    acquisitionInformation:  (MI_AcquisitionInformation)
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  various
            type: (unknown)
            description:  5 cores, piston
        platform:  (MI_Platform)
            identifier:  (MD_Identifier)
                authority:  (CI_Citation)
                    title:  NASA/Global Change Master Directory (GCMD) Platform Keywords
                    date:  (CI_Date)
                        date:  2008-02-05
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  GCMD User Support Office
                    citedResponsibleParty:  GCMD Valids
                code:  In Situ Ocean-based Platforms > SHIPS
            description:  Various ocean-based and lake-based ships, boats, remotely operated vehicles, submersibles, and other unspecified types of platforms
            instrument: (unknown)