globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2015.04.024
Scopus记录号: 2-s2.0-84930185341
论文题名:
Distal tephras of the eastern Lake Victoria basin, equatorial East Africa: Correlations, chronology and a context for early modern humans
作者: Blegen N.; Tryon C.A.; Faith J.T.; Peppe D.J.; Beverly E.J.; Li B.; Jacobs Z.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 122
起始页码: 89
结束页码: 111
语种: 英语
英文关键词: East Africa ; Human evolution ; Middle Stone Age ; Tephrostratigraphy
Scopus关键词: Electron probe microanalysis ; Lakes ; Luminescence ; Microanalysis ; Stratigraphy ; Early pleistocene ; East Africa ; Human evolution ; Major and minor elements ; Optically stimulated luminescence ; Stone age ; Tephrostratigraphy ; Volcaniclastic deposits ; Deposits ; archaeological evidence ; correlation ; fossil record ; human evolution ; Mesolithic ; paleontology ; Pleistocene ; Pliocene ; stratigraphy ; tephra ; tephrochronology ; volcanogenic deposit ; East African Lakes ; Homa Bay ; Kenya ; Lake Victoria ; Rusinga Island
英文摘要: 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. © 2015 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59877
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作者单位: Department of Anthropology, University of Connecticut, Storrs, CT, United States; Department of Anthropology, Harvard University, Peabody Museum, 11 Divinity Ave, Cambridge, MA, United States; School of Social Science, University of Queensland, Brisbane, QLD, Australia; Terrestrial Paleoclimatology Research Group, Department of Geology, Baylor University, Waco, TX, United States; Centre for Archaeological Science, School of Earth and Environmental Sciences, University of Wollongong, Wollongong, NSW, Australia

Recommended Citation:
Blegen N.,Tryon C.A.,Faith J.T.,et al. Distal tephras of the eastern Lake Victoria basin, equatorial East Africa: Correlations, chronology and a context for early modern humans[J]. Quaternary Science Reviews,2015-01-01,122
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