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Type: Journal article
Title: New light on the age of the White Nile
Author: Williams, M.
Adamson, D.
Prescott, J.
Williams, F.
Citation: Geology, 2003; 31(11):1001-1004
Publisher: Geological Soc America Inc
Issue Date: 2003
ISSN: 0091-7613
Statement of
Martin A. J. Williams, Donald Adamson, John R. Prescott and Frances M. Williams
Abstract: Landsat 5 Thematic Mapper and 7 Enhanced Thematic Mapper imagery reveal lake shorelines in the White Nile valley as far south as lat 10°N. The highest shoreline is at 386 m elevation and was eroded when the White Nile formed a lake as wide as 70 km and >500 km long. Finely laminated green clays laid down on the floor of this lake are overlain by alluvial sands and clays, dated by optically stimulated luminescence as 15 ka to older than 250 ka. The alluvium was deposited during interglacial episodes of stronger summer monsoons and very high White Nile floods. The White Nile paleolake is much older than marine oxygen isotope stage 7 and may have formed ca. 400 ka, during the exceptionally long stage 11 interglacial.
Keywords: Quaternary; Nile; paleohydrology; luminescence dating; paleolake
RMID: 0020030992
DOI: 10.1130/G19801.1
Appears in Collections:Physics publications
Geography, Environment and Population publications

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