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      New radiocarbon dates from the Bapot-1 site in Saipan and Neolithic dispersal by stratified diffusion

      Clark, Geoffrey; Petchey, Fiona; Winter, Olaf; Carson, Mike; O’Day, Patrick
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      New radiocarbon dates.pdf
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       www.pacificarchaeology.org
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      Clark, G., Petchey, F., Winter, O., Carson, M. & O’Day, P. (2010). New radiocarbon dates from the Bapot-1 site in Saipan and Neolithic dispersal by stratified diffusion. Journal of Pacific Archaeology, 1(1), 21-35.
      Permanent Research Commons link: https://hdl.handle.net/10289/5405
      Abstract
      The colonisation of the Mariana Islands in Western Micronesia is likely to represent an early ocean dispersal of more than 2000 km. Establishing the date of human arrival in the archipelago is important for modelling Neolithic expansion in Island Southeast Asia and the Pacific, particularly the role of long-distance dispersals. This paper presents new ¹⁴C results and a ΔR estimate from the Bapot-1 site on Saipan Island, which indicate human arrival at ca. 3400-3200 cal. BP. Archaeological chronologies of long-distance dispersal to Western Micronesia and the Lapita expansion (Bismarcks to Samoa) show that the Neolithic dispersal rate was increasing during the period ca. 3400-2900 cal. BP. The range-versus-time relationship is similar to stratified diffusion whereby a period of relatively slow expansion is succeeded by long-distance movement. An increase in new colonies created by long-distance migrants results in accelerating range expansion.
      Date
      2010
      Type
      Journal Article
      Publisher
      New Zealand Archaeological Association
      Rights
      This article has been published in the journal: Journal of Pacific Archaeology. The definitive publisher-authenticated version is available online at: http://www.pacificarchaeology.org/index.php/journal/article/view/7. Used with permission.
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