Reflections On A Rift Lake: Paleolimnological Insights On Ecosystem Change At Lake Tanganyika

1
Lake Malawi Scientific Drilling Project Update A.
Cohen, C. Scholz, T. Johnson, J. King, R.
Lyons, C. Beuning and L. McHargue DOSECC 2006
Annual Drilling Workshop
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• Preliminary Scientific Results
• Site Characteristics
• Geochronology
• Sedimentologic, Paleoecologic
• Geochemical Records
• Paleoclimate Implications

3

• Drill Sites
• Site 1-C. basin deep hole, 592mwd, 381mblf,
  double cored
• top 85m, 1.5Ma record.
• Site 2-N. basin, short, high
• resolution record, 359mwd,
• 41mblf, triple cored.
• 100ka record.

• Provisional Age Model For MAL05-1B
• Based to date on
• C-14 (top of core)
• OSL
• P-mag excursion and reversal stratigraphy
• Be-10 U-series, cosmogenic surface dating and
  Ar/Ar
• in the works

4

• Current Research Activity
• Follow-on science program funded by NSF spring
  2006
• Broad suite of geochemistry, paleoecology,
  sedimentology
• physical properties studies planned
• Immediate focus on Core 1C-higher resolution
  record of last
• 250ka
• Refine age model-more
• age control

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Integrating Our Long Climate Records With The
Story Of Human Evolution