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

Metadata Updated: January 9, 2016

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

Downloads & Resources


Metadata Date December 31, 2015
Metadata Created Date September 26, 2015
Metadata Updated Date January 9, 2016
Reference Date(s) November 3, 1997 (publication), November 3, 1997 (revision)
Frequency Of Update notPlanned

Metadata Source

Harvested from NOAA CSW Harvest Source

Graphic Preview

sample locations in study area

Additional Metadata

Resource Type Dataset
Metadata Date December 31, 2015
Metadata Created Date September 26, 2015
Metadata Updated Date January 9, 2016
Reference Date(s) November 3, 1997 (publication), November 3, 1997 (revision)
Responsible Party DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
Contact Email
Access Constraints Access to this dataset is unrestricted., 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
Graphic Preview Type GIF
Guid gov.noaa.ngdc.mgg.geology:G02885
Harvest Object Id abffe692-75bb-4940-b570-9b856846ac5a
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence 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., Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
Metadata Language eng: USA
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

Didn't find what you're looking for? Suggest a dataset here.