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Contribution of strontium to the human diet from querns and millstones: an experiment in digestive strontium isotope uptake

Johnson, Lucie; Montgomery, Janet; Evans, Jane; Hamilton, Elliot

Contribution of strontium to the human diet from querns and millstones: an experiment in digestive strontium isotope uptake Thumbnail


Authors

Lucie Johnson

Jane Evans

Elliot Hamilton



Abstract

The question of whether rock grit ingested unintentionally from querns, metates or millstones or deliberately through pica or geophagy is bioaccessible in the human gut has not been addressed in archaeological Sr-isotope studies. This study employed the Unified Bioaccessibility Method and determined that ingested rock grit can provide bioaccessible 87Sr/86Sr, but that unintentional consumption is unlikely to constitute more than 1% of the diet (by mass) and will not significantly change, i.e. by > 0.001, human skeletal 87Sr/86Sr. The use of locally or non-locally sourced querns or millstones will not affect the interpretation of archaeological human 87Sr/86Sr values in Britain. Keywords: Strontium, 87Sr/86Sr, bioaccessible, quern, millstone, grinding stone, metates, human diet, Millstone Grit, Pennant sandstone, Eskdale granite.

Journal Article Type Article
Acceptance Date Apr 11, 2019
Online Publication Date Jun 10, 2019
Publication Date Dec 31, 2019
Deposit Date Jan 29, 2019
Publicly Available Date Jun 14, 2019
Journal Archaeometry
Print ISSN 0003-813X
Electronic ISSN 1475-4754
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 61
Issue 6
Pages 1366-1381
DOI https://doi.org/10.1111/arcm.12485
Public URL https://durham-repository.worktribe.com/output/1309223

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Published Journal Article (Advance online version) (431 Kb)
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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Advance online version © 2019 The Authors Archaeometry published by John Wiley & Sons Ltd on behalf of University of Oxford. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.





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