Hostname: page-component-848d4c4894-x5gtn Total loading time: 0 Render date: 2024-06-03T00:17:03.092Z Has data issue: false hasContentIssue false
  • English
  • Français

PRELIMINARY RESULTS FROM GLASGOW INTERNATIONAL RADIOCARBON INTERCOMPARISON

Published online by Cambridge University Press:  14 August 2023

E M Scott Open the ORCID record for E M Scott [Opens in a new window] ,
P Naysmith  and
E Dunbar Open the ORCID record for E Dunbar [Opens in a new window]
E M Scott*
Affiliation:
School of Mathematics and Statistics, University of Glasgow, Glasgow, UK
P Naysmith
Affiliation:
SUERC Radiocarbon Laboratory, University of Glasgow, East Kilbride, UK
E Dunbar
Affiliation:
SUERC Radiocarbon Laboratory, University of Glasgow, East Kilbride, UK
*
*Corresponding author. Email: marian.scott@glasgow.ac.uk
Get access Rights & Permissions [Opens in a new window]

Abstract

GIRI (Glasgow International Radiocarbon Intercomparison) was designed to meet a number of objectives, including to provide an independent assessment of the analytical quality of the laboratory/measurement and an opportunity for a laboratory to participate and improve (if needed). The principles in the design of GIRI were to provide the following: (a) a series of unrelated individual samples, spanning the dating age range, (b) linked samples to earlier intercomparisons to allow traceability, (c) known age samples, to allow independent accuracy checks, (d) a small number of duplicates, to allow independent estimation of laboratory uncertainty, and (e) two categories of samples—bulk and individual—to support laboratory investigation of variability. All of the GIRI samples are natural (wood, peat, and grain), some are known age, and overall their age spans approx. >40,000 years BP to modern. The complete list of sample materials includes humic acid, whalebone, grain, single ring dendro-dated samples, dendro-dated wood samples spanning a number of rings (e.g., 10 rings), background and near background samples of bone and wood. We present an overview of the results received and preliminary consensus values for the samples supporting a more in-depth evaluation of laboratory performance and variability.

Keywords

accuracyconsensusintercomparison
Type
Conference Paper
Information
Radiocarbon , First View , pp. 1 - 8
Check for updates
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of University of Arizona

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

Selected Papers from the 24th Radiocarbon and 10th Radiocarbon & Archaeology International Conferences, Zurich, Switzerland, 11–16 Sept. 2022

References

REFERENCES

Hogg, A, Lorrey, AM, Turney, CS, Palmer, JG, Boswijk, G, Fenwick, P. 2021. Advances and limitations in establishing a contiguous high-resolution atmospheric radiocarbon record derived from subfossil kauri tree rings for the interval 60–27 cal kyr BP. Quaternary Geochronology. doi: 10.1016/j.quageo.2021.101251 Google Scholar
Naysmith, P, Scott, EM, Dunbar, E, Cook, GT. 2019. Humics—their history in the radiocarbon inter-comparisons studies. Radiocarbon 61(5):1413–1422.CrossRefGoogle Scholar
Scott, EM, Naysmith, P, Cook, GT. 2018. Why do we need 14C inter-comparisons?: The Glasgow 14C inter-comparison series, a reflection over 30 years. Quaternary Geochronology 43:72–82.CrossRefGoogle Scholar
Scott, EM, Naysmith, P, Cook, G. 2022. What lies behind radiocarbon intercomparisons and the design of the new intercomparison, GIRI? Nuclear Instruments and Methods in Physics Research Section B 525:62–66. doi: 10.1016/j.nimb.2022.06.015 CrossRefGoogle Scholar
Scott, EM, Naysmith, P, Cook, GT. 2017. Should archaeologists care about 14C inter-comparisons? Why? A summary report on SIRI. Radiocarbon 59(5):1589–1596. doi: 10.1017/RDC.2017.12 CrossRefGoogle Scholar
Thompson, M. 2022. Assigned values in the GeoPT Proficiency Testing Scheme. Geostandards and Geoanalytical Research 46(1):37–41.CrossRefGoogle Scholar
Tripney, B, Dunbar, E, Naysmith, P, Scott, EM. 2023. Routine quality assurance in the SUERC radiocarbon laboratory. Radiocarbon. doi: 10.1017/RDC.2023.45.CrossRefGoogle Scholar