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      Colonisation of Remote Oceania: New dates for the Bapot-1 site in the Mariana Islands

      Petchey, Fiona; Clark, Geoffrey; Winter, Olaf; O'Day, Patrick; Litster, Mirani
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      Bapot-1 Draft-5.pdf
      Submitted version, 355.6Kb
      DOI
       10.1002/arco.5108
      Link
       onlinelibrary.wiley.com
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      Petchey, F., Clark, G., Winter, O., O’Day, P., & Litster, M. (2016). Colonisation of Remote Oceania: New dates for the Bapot-1 site in the Mariana Islands. Archaeology in Oceania. https://doi.org/10.1002/arco.5108
      Permanent Research Commons link: https://hdl.handle.net/10289/11379
      Abstract
      The colonisation of the Mariana Islands in Western Micronesia is likely to represent a long-distance ocean dispersal of more than 2000 km, and establishing the date of human arrival in the archipelago is important for modelling Neolithic expansion in Island South-East Asia and the Pacific. In 2010, Clark et al. published a paper discussing a number of radiocarbon dates from the Bapot-1 site on Saipan Island, but a disparity between charcoal and marine shell (Anadara sp.) results prevented the calculation of a definitive age for the site and left open the possibility that Bapot-1 was first settled as early as 3500 calBP. Here, we present new research using a combination of stable isotope (δ13C and δ18O) and 14C information to demonstrate that A. antiquata from the lowest layers of Bapot-1 is affected by hardwaters. These new results indicate human arrival at Bapot-1 occurred around 3200-3080 calBP (1250-1130 BC). We recommend a similar isotopic evaluation for other sites in the Marianas that are dated by marine shell.
      Date
      2016
      Type
      Journal Article
      Publisher
      Wiley-Blackwell
      Rights
      This is an author’s submitted version of an article published in the journal: Archaeology in Oceania. © 2016 Oceania Publications.
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      • Science and Engineering Papers [3116]
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