Biogenic Silica and Carbon 14 Age Dates from Lake Victoria Cruise V95 Cores
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.
- 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].
- ID not available.
gov.noaa.ngdc.mgg.geology:G02885
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Distribution Formats |
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor | NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact | NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact | Marine Geology Data Manager NOAA National Centers for Environmental Information geology.info@noaa.gov |
Coverage Description | Lake Victoria, East Africa |
Time Period | 1995-04-08 to 1995-04-12 |
Spatial Reference System | urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
West:32.8285
East:33.4553
South:-1.593
North:-0.4605
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Spatial Coverage Map |
General Documentation |
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Edition | First |
Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed,
especially in columns |
Dataset Progress Status | Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | Not planned - Completed data set, no additions planned. |
Supplemental Information |
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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Purpose | paleoenvironmental studies |
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Theme keywords | Library of Congress Subject Headings
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Platform keywords | Global Change Master Directory (GCMD) Platform Keywords
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Instrument keywords | Global Change Master Directory (GCMD) Instrument Keywords
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Place keywords | Global Change Master Directory (GCMD) Location Keywords
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Project keywords | Global Change Master Directory (GCMD) Project Keywords
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Other Constraints | 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]. |
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Lineage Statement | lineage prior to transfer to NCEI is unknown. |
Processing Environment | Native Dataset Environment: ASCII text |
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Last Modified: 2020-04-21
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