Distal tephras of the eastern Lake Victoria Basin, Equatorial East Africa: correlations, chronology, and a context for early modern humans

Blegen, Nick, Tryon, Christian A., Faith, J. Tyler, Peppe, Daniel J., Beverly, Emily J., Li, Bo and Jacobs, Zenobia (2015) Distal tephras of the eastern Lake Victoria Basin, Equatorial East Africa: correlations, chronology, and a context for early modern humans. Quaternary Science Reviews, 122 89-111. doi:10.1016/j.quascirev.2015.04.024


Author Blegen, Nick
Tryon, Christian A.
Faith, J. Tyler
Peppe, Daniel J.
Beverly, Emily J.
Li, Bo
Jacobs, Zenobia
Title Distal tephras of the eastern Lake Victoria Basin, Equatorial East Africa: correlations, chronology, and a context for early modern humans
Journal name Quaternary Science Reviews   Check publisher's open access policy
ISSN 0277-3791
1873-457X
Publication date 2015-06-15
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.quascirev.2015.04.024
Open Access Status
Volume 122
Start page 89
End page 111
Total pages 23
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Collection year 2016
Language eng
Formatted abstract
The tephrostratigraphic framework for Pliocene and Early Pleistocene paleoanthropological sites in East Africa has been well established through nearly 50 years of research, but a similarly comprehensive framework is lacking for the Middle and particularly the Late Pleistocene. We provide the first detailed regional record of Late Pleistocene tephra deposits associated with artifacts or fossils from the Lake Victoria basin of western Kenya. Correlations of Late Pleistocene distal tephra deposits from the Wasiriya beds on Rusinga Island, the Waware beds on Mfangano Island and deposits near Karungu, mainland Kenya, are based on field stratigraphy coupled with 916 electron microprobe analyses of eleven major and minor element oxides from 50 samples. At least eight distinct distal tephra deposits are distinguished, four of which are found at multiple localities spanning >60km over an approximately north to south transect. New optically stimulated luminescence dates help to constrain the Late Pleistocene depositional ages of these deposits. Our correlation and characterization of volcaniclastic deposits expand and refine the current stratigraphy of the eastern Lake Victoria basin. This provides the basis for relating fossil- and artifact-bearing sediments and a framework for ongoing geological, archaeological and paleontological studies of Late Pleistocene East Africa, a crucial time period for human evolution and dispersal within and out of Africa.
Keyword East Africa
Human evolution
Middle Stone Age
Tephrostratigraphy
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Social Science Publications
 
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Created: Mon, 15 Jun 2015, 07:51:30 EST by Tyler Faith on behalf of School of Social Science