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Afar Valley

The experts think of slow transitions but their own evidence says replacements. The analysis of a nearly complete skeleton found in the Afar Valley of Ethiopia told Johanson and his colleague that A. afarensis was a true upright walker with a brain about as large as that of a chimpanzee.4 More than 10 years after this sensational... [Pg.73]

Extensive volcanism can be found in eastern Africa associated with the East African rift system. Helium isotope ratios measured in basalts from the Ethiopian Rift Valley and Afar, near the triple junction of Red Sea, Aden, and Ethiopian rift systems, are 6-17/ a (Marty et al., 1993, 1996 Scarsi and Craig, 1996). These values include MORB ratios as well as indications of both contributions from radiogenic He and high He/ He hotspots. To the south, the rift system divides into eastern and western branches. Xenoliths from Tanzanian vents in the eastern branch... [Pg.1010]

One tentative theory for the absence of human fossils in the Pliocene Era is that a great drought in Central Africa forced the hominoids to become aquatic waders, isolated in the Afar GulfThis Gulf lies in the Rift Valley of Africa, south of the Danakil Alps. " °... [Pg.51]

Emergence of the Afro-Asiatic Language Groups and the cradle of Man in the Danakil Alps of Afar Gulf of the Rift Valley at the southern end of the Red Sea... [Pg.52]


See other pages where Afar Valley is mentioned: [Pg.291]   
See also in sourсe #XX -- [ Pg.73 ]




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