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New ΔR Values for the Southwest Pacific Ocean

Published online by Cambridge University Press:  18 July 2016

Fiona Petchey ,
Matthew Phelan  and
J Peter White
Fiona Petchey
Affiliation:
Waikato Radiocarbon Dating Laboratory, University of Waikato, Private Bag 3105, Hamilton, New Zealand. Corresponding author. Email: f.petchey@waikato.ac.nz
Matthew Phelan
Affiliation:
Aboriginal Affairs Victoria, PO Box 515, East Melbourne, Victoria 3002, Australia
J Peter White
Affiliation:
School of Philosophical and Historical Inquiry, University of Sydney, New South Wales 2006, Australia
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Abstract

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ΔR results of known-age shells from the Solomon and Coral Seas and the northwest coast of New Ireland are presented. The results are too few to be conclusive but indicate that ΔR in this region is variable. An average ΔR value of 370 ± 25 yr is recorded for a range of shell species from Kavieng Harbor, New Ireland, and is primarily attributed to weak equatorial upwelling of depleted 14C due to seasonal current reversals. In contrast, values from the Solomon and Coral Seas are lower (average ΔR = 45 ± 19 yr). Higher ΔR values for some shellfish from these 2 seas is attributed to ingestion of 14C-depleted sediment by deposit-feeding species.

Type
Part II
Information
Radiocarbon , Volume 46 , Issue 2: Proceedings of the 18th International Radiocarbon Conference (Part 2 of 2), Conference Editors: Nancy Beavan Athfield, Rodger J Sparks , 2004 , pp. 1005 - 1014
Copyright
Copyright © The Arizona Board of Regents on behalf of the University of Arizona 

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