Early Holocene climate change and human occupation along the semiarid coast of north‐central Chile

Early Holocene climate change and human occupation along the semiarid coast of north‐central Chile The brief, terminal Pleistocene archaeological site at Santa Julia (SJ, 31° 50′ S; 71° 45′ W) is the only one with fluted projectile preforms and megafauna consumption known from the Chilean semiarid coastline. Here, we present the climatic history at SJ during the early Holocene reconstructed from pollen and charcoal analyses spanning 13.2–8.6 ka (=103 calibrated 14C yr BP). Elevated charcoal concentrations confirm human activity by 13.2 ka. Human occupation decreased in intensity and charcoal practically disappears from the record after 10.6 ka, followed by wetland expansion at SJ between 10.5 and 9.5 ka. Local dominance of coastal shrubland reveals that dry phases occurred between >11.2–10.5 and 9.5–9.0 ka. Overall, these findings imply that by modulating available resources at both local and landscape levels climate change may have played an important role in explaining the peopling of semiarid coastal Chile. Copyright © 2010 John Wiley & Sons, Ltd. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Quaternary Science Wiley

Early Holocene climate change and human occupation along the semiarid coast of north‐central Chile

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Publisher
Wiley
Copyright
Copyright © 2010 John Wiley & Sons, Ltd.
ISSN
0267-8179
eISSN
1099-1417
DOI
10.1002/jqs.1385
Publisher site
See Article on Publisher Site

Abstract

The brief, terminal Pleistocene archaeological site at Santa Julia (SJ, 31° 50′ S; 71° 45′ W) is the only one with fluted projectile preforms and megafauna consumption known from the Chilean semiarid coastline. Here, we present the climatic history at SJ during the early Holocene reconstructed from pollen and charcoal analyses spanning 13.2–8.6 ka (=103 calibrated 14C yr BP). Elevated charcoal concentrations confirm human activity by 13.2 ka. Human occupation decreased in intensity and charcoal practically disappears from the record after 10.6 ka, followed by wetland expansion at SJ between 10.5 and 9.5 ka. Local dominance of coastal shrubland reveals that dry phases occurred between >11.2–10.5 and 9.5–9.0 ka. Overall, these findings imply that by modulating available resources at both local and landscape levels climate change may have played an important role in explaining the peopling of semiarid coastal Chile. Copyright © 2010 John Wiley & Sons, Ltd.

Journal

Journal of Quaternary ScienceWiley

Published: Sep 1, 2010

References

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    Kaiser, Kaiser; Schefuß, Schefuß; Lamy, Lamy; Mohtadi, Mohtadi; Hebbeln, Hebbeln
  • Last deglacial sea‐surface temperature evolution in the Southeast Pacific compared to climate changes on the South American continent
    Kim, Kim; Schneider, Schneider; Hebbeln, Hebbeln; Müller, Müller; Wefer, Wefer
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    Montecinos, Montecinos; Díaz, Díaz; Aceituno, Aceituno

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