Revisiting the potential of carbonized grain to preserve biogenic  87 Sr/ 86 Sr signatures within the burial environment | Zendy

Styring A. K. | Zendy; Evans J. A. | Zendy; Nitsch E. K. | Zendy; LeeThorp J. A. | Zendy; Bogaard A. | Zendy

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Revisiting the potential of carbonized grain to preserve biogenic 87 Sr/ 86 Sr signatures within the burial environment

Author(s) -

Styring A. K.,

Evans J. A.,

Nitsch E. K.,

LeeThorp J. A.,

Bogaard A.

Publication year - 2019

Publication title -

archaeometry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.716

H-Index - 67

eISSN - 1475-4754

pISSN - 0003-813X

DOI - 10.1111/arcm.12398

Subject(s) - leaching (pedology) , isotopes of strontium , strontium , isotope , carbonization , geology , mineralogy , hydrochloric acid , archaeology , environmental chemistry , chemistry , soil water , soil science , geography , inorganic chemistry , nuclear physics , physics , organic chemistry , adsorption

Strontium (Sr) isotope analysis of archaeological crops is a potential method of provenancing and identifying the movement of crops in the past, but there remains uncertainty about whether original 87 Sr/ 86 Sr values can be obtained from carbonized buried grains. We have determined that hydrochloric acid (HCl) leaching removes some, but not all, exogenous Sr from carbonized cereal grains buried in soil for up to one year. We conclude that while further work could refine the leaching method, Sr isotope analysis of archaeological cereal grains can distinguish crops sourced from outside a particular (e.g., local) area if it can be shown that leaching moves grain 87 Sr/ 86 Sr values significantly away from the expected Sr signature.

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