Late Cenozoic Moisture History of East Africa-Reference-Cited by-同舟云学术

Late Cenozoic Moisture History of East Africa

Published:2005-09-23 Issue:5743 Volume:309 Page:2051-2053
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Trauth Martin H.¹²³,Maslin Mark A.¹²³,Deino Alan¹²³,Strecker Manfred R.¹²³

Affiliation:

1. Institut für Geowissenschaften, Universität Potsdam, Post Office Box 601553, D-14415 Potsdam, Germany.

2. Environmental Change Research Center, Department of Geography, University College London, UK.

3. Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA.

Abstract

Lake sediments in 10 Ethiopian, Kenyan, and Tanzanian rift basins suggest that there were three humid periods at 2.7 to 2.5 million years ago (Ma), 1.9 to 1.7 Ma, and 1.1 to 0.9 Ma, superimposed on the longer-term aridification of East Africa. These humid periods correlate with increased aridity in northwest and northeast Africa and with substantial global climate transitions. These episodes could have had important impacts on the speciation and dispersal of mammals and hominins, because a number of key events, such as the origin of the genus Homo and the evolution of the species Homo erectus , took place in this region during that time.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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