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      A revised age for the Kawakawa/Oruanui tephra, a key marker for the Last Glacial Maximum in New Zealand

      Vandergoes, Marcus J.; Hogg, Alan G.; Lowe, David J.; Newnham, Rewi M.; Denton, George H.; Southon, John R.; Barrell, David J.A.; Wilson, Colin J.N.; McGlone, Matt S.; Allan, Aidan S.R.; Almond, Peter C.; Petchey, Fiona; Dabell, Kathleen; Dieffenbacher-Krall, Ann C.; Blaauw, Maarten
      DOI
       10.1016/j.quascirev.2012.11.006
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      Vandergoes, M. J., Hogg, A. G., Lowe, D. J., Newnham, R. M., Denton, G. H., Southon, J., & Blaauw, M. (2013). A revised age for the Kawakawa/Oruanui tephra, a key marker for the Last Glacial Maximum in New Zealand. Quaternary Science Reviews, first published online 2013.
      Permanent Research Commons link: https://hdl.handle.net/10289/7256
      Abstract
      The Kawakawa/Oruanui tephra (KOT) is a key chronostratigraphic marker in terrestrial and marine deposits of the New Zealand (NZ) sector of the southwest Pacific. Erupted early during the Last Glacial Maximum (LGM), the wide distribution of the KOT enables inter-regional alignment of proxy records and facilitates comparison between NZ climatic variations and those from well-dated records elsewhere. We present 22 new radiocarbon ages for the KOT from sites and materials considered optimal for dating, and apply Bayesian statistical methods via OxCal4.1.7 that incorporate stratigraphic information to develop a new age probability model for KOT. The revised calibrated age, ±2 standard deviations, for the eruption of the KOT is 25,360 ± 160 cal yr BP. The age revision provides a basis for refining marine reservoir ages for the LGM in the southwest Pacific.
      Date
      2013
      Type
      Journal Article
      Publisher
      Elsevier
      Collections
      • Science and Engineering Papers [2945]
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