Holocene variations in the Scottish marine radiocarbon reservoir effect

Ascough, P.L., Cook, G.T., Dugmore, A.J., Barber, J., Higney, E. and Scott, E.M. (2004) Holocene variations in the Scottish marine radiocarbon reservoir effect. Radiocarbon, 46(2), pp. 611-620.

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Publisher's URL: https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/4194

Abstract

We assessed the evidence for variations in the marine radiocarbon reservoir effect (MRE) at coastal, archaeological Iron Age sites in north and west Scotland by comparing AMS measurements of paired marine and terrestrial materials (4 pairs per context). DeltaR values were calculated from measurements on material from 3 sites using 6 sets of samples, all of which were deposited around 2000 BP. The weighted mean of the DeltaR determinations was -79 +/- 17 C-14 yr, which indicates a consistent, reduced offset between atmospheric and surface ocean C-14 specific activity for these sites during this period, relative to the present day (DeltaR = similar to0 C-14 yr). We discuss the significance of this revised AR correction by using the example of wheelhouse chronologies at Hornish Point and their development in relation to brochs. In addition, we assess the importance of using the concepts of MRE correction and AR variations when constructing chronologies using C-14 measurements made on materials that contain marine- derived carbon.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cook, Professor Gordon and Ascough, Dr Philippa and Dunbar, Dr Elaine
Authors: Ascough, P.L., Cook, G.T., Dugmore, A.J., Barber, J., Higney, E., and Scott, E.M.
Subjects:Q Science > QE Geology
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Radiocarbon
Publisher:University of Arizona
ISSN:0033-8222
Copyright Holders:© 2004 by the Arizona Board of Regents on behalf of the University of Arizona
First Published:First published in Radiocarbon 46(2):611-620
Publisher Policy:Reproduced with the permission of the Publisher

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