期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 106, 期 30, 页码 12261-12266出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.0810842106
关键词
archaeology; environment; genetics; lithic technology
资金
- British Academy
- The Leverhulme Trust
- The Leakey Foundation
- McDonald Institute for Archaeological Research
- Natural Environmental Research Council's Environmental Factors in the Chronology of Human Evolution and Dispersal Program
- Natural Environmental Research Council's Arts and Humanities Research Council Oxford Radiocarbon Accelerator Dating Service
- Australian Research Council
- Leakey Trust
- Royal Anthropological Institute
- Natural Environment Research Council [NER/T/S/2002/00468] Funding Source: researchfish
Genetic studies of South Asia's population history have led to postulations of a significant and early population expansion in the subcontinent, dating to sometime in the Late Pleistocene. We evaluate this argument, based on new mtDNA analyses, and find evidence for significant demographic transition in the subcontinent, dating to 35-28 ka. We then examine the paleoenvironmental and, particularly, archaeological records for this time period and note that this putative demographic event coincides with a period of ecological and technological change in South Asia. We document the development of a new diminutive stone blade (microlithic) technology beginning at 35-30 ka, the first time that the precocity of this transition has been recognized across the subcontinent. We argue that the transition to microlithic technology may relate to changes in subsistence practices, as increasingly large and probably fragmented populations exploited resources in contracting favorable ecological zones just before the onset of full glacial conditions.
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