Late pleistocene climatic reconstruction in North Africa and the emergence of modern Europeans
Tóm tắt
A critical evaluation of a replacementist hypothesis regarding the origin of modernH. sapiens in Europe as suggested byN. T. Boaz D. Ninkovitch & M. Rossignol-Strick (1982) is presented. These authors have contended that harsh desertic conditions in North Africa between 40 ky — 30 ky B. P. resulted in the movement of modern humans from this region around the Mediterranean littoral into Europe. Two additional tenets of this hypothesis are the claim that Neandertals were islated in Europe during the first half of the Würm and also the assertion that formation of a landbridge at the Dardanelles ca. 34 ky B. P. ended this isolation and facilitated an influx of modern humans into Europe at this time. This hypothesis is found to be unsupported by the balance of the available data. The specific points discussed include the following: a) climatic and archaeological indicators of a hospitable environment in North Africa between 40 ky — 30 ky B.P., b) the likelihood of landbridge formation at the Dardanelles throughout the last glacial cycle, c) the technological capabilities and uncertain taxonomic identity of the North African source group and d) the similarities between west Asian and European Neandertals which indicate that a prolonged separation of the two groups is unlikely.
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