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Radiocarbon Results from a 13-Kyr BP Coral from the Huon Peninsula, Papua New Guinea

Published online by Cambridge University Press:  18 July 2016

G S Burr ,
Chrystie Galang ,
F W Taylor ,
Christina Gallup ,
R Lawrence Edwards ,
Kirsten Cutler  and
Bill Quirk
G S Burr
Affiliation:
University of Arizona, NSF-Arizona AMS Laboratory, Tucson, Arizona 85721, USA.
Chrystie Galang
Affiliation:
University of Arizona, NSF-Arizona AMS Laboratory, Tucson, Arizona 85721, USA.
F W Taylor
Affiliation:
Institute for Geophysics, The University of Texas at Austin, 4412 Spicewood Springs Road, Bld. 600, Austin, Texas 78759-8500, USA.
Christina Gallup
Affiliation:
University of Minnesota Duluth Geological Sciences, Room 229 HHD175, 10 University Drive, Duluth, Minnesota 55812, USA
R Lawrence Edwards
Affiliation:
Minnesota Isotope Laboratory, Department of Geology and Geophysics, University of Minnesota, 310 Pillsbury Drive SE, Minneapolis, Minnesota 55455, USA.
Kirsten Cutler
Affiliation:
Minnesota Isotope Laboratory, Department of Geology and Geophysics, University of Minnesota, 310 Pillsbury Drive SE, Minneapolis, Minnesota 55455, USA.
Bill Quirk
Affiliation:
University Medical Center, University of Arizona, Tucson, Arizona 85721, USA.
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Abstract

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This paper presents radiocarbon results from a single Goniastrea favulus coral from Papua New Guinea which lived continuously between 13.0 and 13.1 kyr BP. The specimen was collected from a drill core on the Huon Peninsula and has been independently dated with 230Th. A site-specific reservoir correction has been applied to the results, and coral growth bands were used to calibrate individual growth years. Alternating density bands, which are the result of seasonal growth variations, were subsampled to provide 2 integrated 6-month 14C measurements per year. This allows for 20 independent measurements to be averaged for each decadal value of the 14C calibration, making these results the highest resolution data set available for this brief time range. The finestructure of the data set exhibits 14C oscillations with frequencies on the order of 4 to 10 yr, similar to those observed in modern coral 14C records.

Type
Articles
Information
Radiocarbon , Volume 46 , Issue 3: IntCal04: Calibration Issue, Guest Editor: PAULA J REIMER , 2004 , pp. 1211 - 1224
Copyright
Copyright © The Arizona Board of Regents on behalf of the University of Arizona 

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