Devising quality assurance procedures for assessment of legacy geochronological data relating to deglaciation of the last British-Irish Ice Sheet

Small, D., Clark, C. D., Chiverrell, R. C., Smedley, R. K., Bateman, M. D., Duller, G. A.T., Ely, J. C., Fabel, D. , Medialdea, A. and Moreton, S. G. (2017) Devising quality assurance procedures for assessment of legacy geochronological data relating to deglaciation of the last British-Irish Ice Sheet. Earth Science Reviews, 164, pp. 232-250. (doi:10.1016/j.earscirev.2016.11.007)

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Abstract

This contribution documents the process of assessing the quality of data within a compilation of legacy geochronological data relating to the last British-Irish Ice Sheet, a task undertaken as part of a larger community-based project (BRITICE-CHRONO) that aims to improve understanding of the ice sheet's deglacial evolution. As accurate reconstructions depend on the quality of the available data, some form of assessment is needed of the reliability and suitability of each given age(s) in our dataset. We outline the background considerations that informed the quality assurance procedures devised given our specific research question. We describe criteria that have been used to make an objective assessment of the likelihood that an age is influenced by the technique specific sources of geological uncertainty. When these criteria were applied to an existing database of all geochronological data relating to the last British-Irish Ice Sheet they resulted in a significant reduction in data considered suitable for synthesis. The assessed data set was used to test a Bayesian approach to age modelling ice stream retreat and we outline our procedure that allows us to minimise the influence of potentially erroneous data and maximise the accuracy of the resultant age models.

Item Type:Articles
Additional Information:The project is the NERC funded consortium BRITICE-CHRONO NE/J009768/1.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Small, Dr David and Moreton, Dr Steven and Fabel, Dr Derek
Authors: Small, D., Clark, C. D., Chiverrell, R. C., Smedley, R. K., Bateman, M. D., Duller, G. A.T., Ely, J. C., Fabel, D., Medialdea, A., and Moreton, S. G.
College/School:College of Science and Engineering > School of Geographical and Earth Sciences
College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Earth Science Reviews
Publisher:Elsevier
ISSN:0012-8252
ISSN (Online):1872-6828
Published Online:30 November 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Earth-Science Reviews 164:232-250
Publisher Policy:Reproduced under a Creative Commons License

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