Abstract View
Geology
Article: pp. 141–144 | Full Text | PDF (231K)
Warmings in the far northwestern Pacific promoted pre-Clovis immigration to America during Heinrich event 1
1. Institute for Geosciences, University of Kiel, Olshausenstrasse 40, 24118 Kiel, Germany, 2. Institute for Geosciences, University of Kiel, Olshausenstrasse 40, 24118 Kiel, Germany, and Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK, 3. Leibniz Labor, University of Kiel, Max-Eyth Strasse 11, 24118 Kiel, Germany, 4. Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK, 5. Leibniz Labor, University of Kiel, Max-Eyth Strasse 11, 24118 Kiel, Germany
Well-dated multidecadal- to centennial-scale sediment records from the subarctic northwest Pacific show that the early deglacial 18.5–15.0 ka was marked by 3 pronounced short-term warmings of ∼5 °C. They lasted 500–1500 yr each and were coeval with early to late stages of cold Heinrich event 1 in the North Atlantic. These regional climate windows may have promoted a pre-Clovis emigration of people from the cold-arid monsoon climate in East Asia to the climatically more favorable, then-emerged Beringian and Aleutian shelf regions and the Americas, as suggested by archeological findings.
Keywords: subarctic North Pacific, sea-surface warming, paleoceanography, Heinrich I stadial, pre-Clovis immigration
Received: 16 September 2005; Revised: 3 November 2005; Accepted: 5 November 2005
DOI: 10.1130/G22200.1
GSA Home • Bookstore • About GSA • Contact Us • FAQs
© 2007 Geological Society of America
Tel: (303) 357-1000. E-mail: gsaservice@geosociety.org.