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https://hdl.handle.net/2440/60760
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Type: | Journal article |
Title: | A Pleistocene diatomite from the western piedmont of Jebel Marra volcano, Darfur, western Sudan, and its hydrological and climatic significance |
Author: | Philibert, A. Tibby, J. Williams, M. |
Citation: | Quaternary International, 2010; 216(1-2):145-150 |
Publisher: | Pergamon-Elsevier Science Ltd |
Issue Date: | 2010 |
ISSN: | 1040-6182 1873-4553 |
Statement of Responsibility: | Aline Philibert, John Tibby and Martin Williams |
Abstract: | Diatoms collected at 10 cm intervals from a 6.3 m Pleistocene lacustrine diatomite section in the now arid piedmont west of Jebel Marra volcanic caldera, Darfur, western Sudan were analyzed. The lake probably formed as a result of a rhyolite lava flow damming a former river. The lake was initially shallow, but in the upper 5.3 m, diatom composition and a salinity reconstruction indicate persistent deep freshwater conditions. The diatomite is overlain by an Acheulian stone tool assemblage with a probable age range of ∼0.8 ± 0.3 Ma. The lake may be coeval with the oil palm fossils discovered ∼90 km to the southwest, which are underlain by Developed Oldowan/Early Acheulian artifacts, some in primary context, and so of Lower/Middle Pleistocene age. Both the diatomite and the oil palm fossils indicate a much wetter climate than today. © 2010 Elsevier Ltd and INQUA. |
Rights: | Copyright © 2010 Elsevier Ltd and INQUA All rights reserved. |
DOI: | 10.1016/j.quaint.2010.01.009 |
Description (link): | http://www.elsevier.com/wps/find/journaldescription.cws_home/865/description#description |
Published version: | http://dx.doi.org/10.1016/j.quaint.2010.01.009 |
Appears in Collections: | Aurora harvest Environment Institute publications Geography, Environment and Population publications |
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