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Developments in the calibration and modeling of radiocarbon dates

Lookup NU author(s): Professor Takeshi Nakagawa

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Abstract

Calibration is a core element of radiocarbon dating and is undergoing rapid development on a number of different fronts. This is most obvious in the area of 14C archives suitable for calibration purposes, which are now demonstrating much greater coherence over the earlier age range of the technique. Of particular significance to this end is the development of purely terrestrial archives such as those from the Lake Suigetsu sedimentary profile and Kauri tree rings from New Zealand, in addition to the groundwater records from speleothems. Equally important, however, is the development of statistical tools that can be used with, and help develop, such calibration data. In the context of sedimentary deposition, age-depth modeling provides a very useful way to analyze series of measurements from cores, with or without the presence of additional varve information. New methods are under development, making use of model averaging, that generate more robust age models. In addition, all calibration requires a coherent approach to outliers, for both single samples and where entire data sets might be offset relative to the calibration curve. This paper looks at current developments in these areas. © 2010 by the Arizona Board of Regents on behalf of the University of Arizona.


Publication metadata

Author(s): Ramsey C, Dee M, Lee S, Nakagawa T, Staff R

Publication type: Article

Publication status: Published

Journal: Radiocarbon

Year: 2010

Volume: 52

Issue: 3

Pages: 953-961

Print publication date: 01/08/2010

ISSN (print): 0033-8222

ISSN (electronic):

Publisher: Arizona Board of Regents


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