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

Dataset Identification:

Resource 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.
Citation
Title Biogenic Silica and Carbon 14 Age Dates from Lake Victoria Cruise V95 Cores
publication  Date   1997-11-03
revision  Date   1997-11-03
Edition First
presentationForm  tableDigital
Series
Name Marine Geology and Geophysics (MGG)
Issue MGG 94075001
other Citation Details  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/
cited responsible party - author
individual Name David J. DeMaster
organisation Name  Department of Marine, Earth and Atmospheric Sciences, North Carolina State University
Contact information
Address
2800 Faucette Drive, Jordan Hall Campus Box 8208, Raleigh, NC, 27695-8208
electronic Mail Address demaster@ncsu.edu
Linkage for online resource
name http://www.meas.ncsu.edu/
URL: http://www.meas.ncsu.edu/
protocol WWW:LINK-1.0-http--link
link function information
Description Contributors web site
target application profile  Web Browser
cited responsible party - publisher
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Topic Category:  geoscientificInformation,oceans
Keywords:
project Keywords
Unknown
ICSU-WDS > International Council for Science - World Data System
thesaurus name >
Title Global Change Master Directory (GCMD) Project Keywords
revision  Date   2016-12-12
publication  Date   1995-04-24
Edition 8.4.1
cited responsible party - publisher
organisation Name  NASA
position Name GCMD User Support Office
Contact information
Address
electronic Mail Address gcmduso@gcmd.gsfc.nasa.gov
Linkage for online resource
name GCMD Feedback Form
URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
link function information
Description Have a Comment for the GCMD?
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name GCMD's Science Keywords and Associated Directory Keywords
URL: http://gcmd.nasa.gov/learn/keyword_list.html
link function information
Description This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
Theme keywords (theme):
Scientific archives
Electronic records
Geology
thesaurus name >
Title Library of Congress Subject Headings
cited responsible party - resourceProvider
organisation Name  US Library of Congress
Contact information
Linkage for online resource
name Library of Congress Subject Headings (LCSH)
URL: http://id.loc.gov/authorities/subjects
protocol http
link function information
Description 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.
target application profile  web browser
Theme keywords (theme):
lacustrine sediments
thesaurus name >
Title USDA National Agricultural Library's Agricultural Thesaurus (NALT)
cited responsible party - resourceProvider
organisation Name  USDA National Agricultural Library
Contact information
Linkage for online resource
name NAL Agricultural Thesaurus (NALT)
URL: http://agclass.nal.usda.gov/
protocol http
link function information
Description The US Department of Agriculture, National Agricultural Library's (NAL) Agricultural Thesaurus (NALT).
target application profile  web browser
Theme keywords (theme):
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
thesaurus name >
Title Global Change Master Directory (GCMD) Science and Services Keywords
revision  Date   2016-09-13
publication  Date   1995-04-24
Edition 8.4.1
cited responsible party - publisher
organisation Name  NASA
position Name GCMD User Support Office
Contact information
Address
electronic Mail Address gcmduso@gcmd.gsfc.nasa.gov
Linkage for online resource
name GCMD Feedback Form
URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
link function information
Description Have a Comment for the GCMD?
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name GCMD's Science Keywords and Associated Directory Keywords
URL: http://gcmd.nasa.gov/learn/keyword_list.html
link function information
Description This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
platform Keywords
In Situ Ocean-based Platforms > SHIPS
thesaurus name >
Title Global Change Master Directory (GCMD) Platform Keywords
revision  Date   2016-12-09
publication  Date   1995-04-24
Edition 8.4.1
cited responsible party - publisher
organisation Name  NASA
position Name GCMD User Support Office
Contact information
Address
electronic Mail Address gcmduso@gcmd.gsfc.nasa.gov
Linkage for online resource
name GCMD Feedback Form
URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
link function information
Description Have a Comment for the GCMD?
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name GCMD's Science Keywords and Associated Directory Keywords
URL: http://gcmd.nasa.gov/learn/keyword_list.html
link function information
Description This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
instrument Keywords
In Situ/Laboratory Instruments > Corers > CORING DEVICES
In Situ/Laboratory Instruments > Corers > SEDIMENT CORERS
thesaurus name >
Title Global Change Master Directory (GCMD) Instrument Keywords
revision  Date   2016-12-20
publication  Date   1995-04-24
Edition 8.4.1
cited responsible party - publisher
organisation Name  NASA
position Name GCMD User Support Office
Contact information
Address
electronic Mail Address gcmduso@gcmd.gsfc.nasa.gov
Linkage for online resource
name GCMD Feedback Form
URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
link function information
Description Have a Comment for the GCMD?
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name GCMD's Science Keywords and Associated Directory Keywords
URL: http://gcmd.nasa.gov/learn/keyword_list.html
link function information
Description This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
Theme keywords (theme):
CIESIN > Environmental Protection > Environmental Modeling > Climate Modeling
CIESIN > Environmental Protection > Climate > Climate Change
thesaurus name >
Title CIESIN Keyword Thesaurus
dataCenter Keywords
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
thesaurus name >
Title NASA/GCMD Data Center Keywords
revision  Date   2015-03-01
publication  Date   1995-04-24
Edition 8.1
cited responsible party - publisher
organisation Name  NASA
position Name GCMD User Support Office
Contact information
Address
electronic Mail Address gcmduso@gcmd.gsfc.nasa.gov
Linkage for online resource
name GCMD Feedback Form
URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
link function information
Description Have a Comment for the GCMD?
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name GCMD's Science Keywords and Associated Directory Keywords
URL: http://gcmd.nasa.gov/learn/keyword_list.html
link function information
Description This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
Location keywords:
CONTINENT > AFRICA > EASTERN AFRICA > LAKE VICTORIA
thesaurus name >
Title Global Change Master Directory (GCMD) Location Keywords
revision  Date   2016-12-01
publication  Date   1995-04-24
Edition 8.4.1
cited responsible party - publisher
organisation Name  NASA
position Name GCMD User Support Office
Contact information
Address
electronic Mail Address gcmduso@gcmd.gsfc.nasa.gov
Linkage for online resource
name GCMD Feedback Form
URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
link function information
Description Have a Comment for the GCMD?
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name GCMD's Science Keywords and Associated Directory Keywords
URL: http://gcmd.nasa.gov/learn/keyword_list.html
link function information
Description This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
Theme keywords (theme):
Limnology
Geophysics
thesaurus name >
Title Science Domain > Earth Science
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
Platform
thesaurus name >
Title Equipment > Platform
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
NOAA
DOC/NOAA/NESDIS/NGDC
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Title Organization > GOVERNMENT AGENCIES-U.S. FEDERAL AGENCIES
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
Analysis
thesaurus name >
Title Method > information processing
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
Silica
Water
thesaurus name >
Title Material > Environmental Material
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
Carbon
NaOH
Isotope
thesaurus name >
Title Material > Chemical
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
Core
thesaurus name >
Title Activity > Observation
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
Lake
thesaurus name >
Title Feature > Hydrologic Feature
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
CIESIN
thesaurus name >
Title Organization > NON-GOVERNMENT/NON-PROFIT ORGANIZATIONS
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
Biogenic Silica
thesaurus name >
Title Material > Mineral
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
Centered
East
thesaurus name >
Title Property > Measure
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
Device
In Situ/Laboratory Instrument
CORING DEVICE
SEDIMENT CORER
thesaurus name >
Title Equipment > Instrument
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
National Centers for Environmental Information
U.S. Department of Commerce
thesaurus name >
Title Virtual International Authority File (VIAF) Corporate Names
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
Theme keywords (theme):
Climate Change
thesaurus name >
Title Process > Atmospheric Process
publication  Date   2018-12-14
other Citation Details  Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:21 UTC 2018
purpose:
paleoenvironmental studies
Browse image (thumbnail):
thumbnail file name:  ...
file type: GIF
thumbnail file description:  sample locations in study area
Resource language:  eng; USA
Character set encoding of resource:  UTF8
Resource progress code:  completed
Resource Maintenance Information
maintenance or update frequency:  notPlanned
notes: Completed data set, no additions planned.
Constraints on resource usage:
Legal Constraints
Access Constraints  otherRestrictions
Other constraints
Access to this dataset is unrestricted.
Constraints on resource usage:
Constraints
Use limitation statement:
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.
Constraints on resource usage:
Constraints
Use limitation statement:
Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
Constraints on resource usage:
Legal Constraints
use constraint:  otherRestrictions
Other constraints
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.
Constraints on resource usage:
Security Constraints
Classification  unclassified
Spatial representation type code:  vector
Processing environment:  Native Dataset Environment: ASCII text
Spatial resolution:
Resource extent
Extent description
Lake Victoria, East Africa
Geographic Extent
Geographic Bounding Box
westBoundLongitude  32.8285
eastBoundLongitude  33.4553
northBoundLatitude  -0.4605
southBoundLatitude  -1.593
Temporal Extent
Sample Collection Dates 1995-04-08 1995-04-12
Vertical Extent
bottom -69
top -60
Additional information on resource:
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.
Credits:
Dr. David J. DeMaster, University of Minnesota Large Lakes Observatory, with funding from the US National Science Foundation IDEAL project.
point of contact - pointOfContact
individual Name Marine Geology Data Manager
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
position Name Marine Geology Data Manager
Contact information
Telephone
Voice (303) 497-4603
Fax (303) 497-6513
Address
325 Broadway, Mail Code E/NE42, Boulder, CO, 80305-3328 Country USA
electronic Mail Address geology.info@noaa.gov
hoursOfService 7:30 - 5:00 Mountain
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Vector spatial representation information

Geometric Objects
geometric Object Type  point
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Coverage description

Type of coverage content  point
Cell value attribute description:  The Latitude and Longitude (point) from which a sample of sediment or rock was collected from the sea floor or a lakebed.
Band
descriptor Distance measured north or south from the equator. Distance north is positive, distance south is negative.
sequence Identifier
name Latitude
Long Wavelength  90.00000
Short Wavelength  -90.00000
units
Band
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.
sequence Identifier
name Longitude
Long Wavelength  180.00000
Short Wavelength  -180.00000
units
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Content information: feature catalog description

Included With Dataset  true
Compliance Code  false
Feature Types  
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Reference system information

Reference System Identifier
Identifier string: urn:ogc:def:crs:EPSG:4326
authority
Title European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
publication  Date   2008-11-12
cited responsible party -
organisation Name  European Petroleum Survey Group
Contact information
Linkage for online resource
name European Petroleum Survey Group Geodetic Parameter Dataset
URL: http://www.epsg-registry.org/
link function search
Description Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.
Version 6.18.3
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Scope of quality information
scope level  dataset
Level Description
dataset described: gov.noaa.ngdc.mgg.geology:G02885
Resource lineage description
Lineage statement
lineage prior to transfer to NCEI is unknown.
Processing Step
date and time 1977-11-03T00:00:00
description Received data from originator
source
source description  D.J. DeMaster, University of Minnesota, Large Lakes Observatory
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy
measure Description  
evaluation Method Description  The horizontal accuracy of data values is approximately .001 degree of latitude/longitude.
QuantitativeAttributeAccuracy
name Of Measure Reliability
measure Description  
evaluation Method Description  Quality control was performed by the originator. NCEI performed basic out-of-range location testing.

Scope of quality information
scope level  repository
Level Description
other component described  NOAA National Centers for Environmental Information
Resource lineage description

Resource distribution information

Distributor
distributor contact - distributor
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
position Name Data Manager
Contact information
Telephone
Voice (303) 497-6338
Fax (303) 497-6513
Address
325 Broadway, Mail Code E/NE42, Boulder, CO, 80305-3328 Country USA
electronic Mail Address geology.info@noaa.gov
hoursOfService 7:30 - 5:00 Mountain
Standard ordering process
fees free online download
Format
Format name ASCII
Format version UTF-8
specification > American Standard Code for Information Interchange (ASCII) text format.
Format
Format name tar.gz
Format version unknown
specification > compressed Tape ARchive file
Digital Transfer Options
transfer Size .03
Linkage for online resource
name Publisher's landing page
URL: https://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
link function information
Description Information about the data set, all access options, and complete documentation.
target application profile  Web Browser
Linkage for online resource
name Data files and documentation
URL: https://www.ngdc.noaa.gov/mgg/geology/data/g02885/
protocol WWW:LINK-1.0-http--link
link function download
Description All originator's data and documentation.
target application profile  Web Browser

Metadata data stamp:  2015-12-31
Resource Maintenance Information
date of next update:  2016-12-31
maintenance or update frequency:  annually
notes: Metadata Review Date: 2016-12-31
notes: This record was automatically modified on 2015-11-05 to include references to NCEI where applicable.
Metadata contact - pointOfContact
individual Name Marine Geology Data Manager
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
position Name Marine Geology Data Manager
Contact information
Telephone
Voice (303) 497-4603
Fax (303) 497-6513
Address
325 Broadway, Mail Code E/NE42, Boulder, CO, 80305-3328 Country USA
electronic Mail Address geology.info@noaa.gov
hoursOfService 7:30 - 5:00 Mountain
Metadata scope code  dataset
Metadata language  eng; USA
Metadata character set encoding:   utf8
Metadata standard for this record:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
standard version:  ISO 19115-2:2009(E)
Metadata record identifier:  gov.noaa.ngdc.mgg.geology:G02885
'Parent' metadata record identifier:  gov.noaa.ngdc:Marine_Geology

Metadata record format is ISO19139-2 XML (MI_Metadata)