LE GUIRRIEC, Julien; ALCAINA-MATEOS, Jonàs; BOUSQUET, Bruno; LE BOURDONNEC, François-Xavier; LE BOURDONNEC, François-Xavier; SÁNCHEZ DE LA TORRE, Marta

doi:10.1016/j.chemolab.2025.105411

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LE GUIRRIEC, Julien
Universitat de Barcelona [UB]

ALCAINA-MATEOS, Jonàs
Universitat de Barcelona [UB]

BOUSQUET, Bruno
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Article de revue

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Chemometrics and Intelligent Laboratory Systems. 2025-08, vol. 263, p. 105411

Elsevier

Resumen en inglés

The sourcing of lithic artefacts, and in particular chert, is a key proxy for archaeologist to better understand hunter-gatherer populations. The heterogeneous structure of chert samples, low trace element content, and variability of outcrops make the geochemical characterisation a methodological challenge. Laser Induced Breakdown Spectroscopy (LIBS) can overcome the issues of variability by enabling fast and low-cost and nearly non-destructive analysis of samples. This paper presents a protocol for chert sourcing using LIBS, by comparing several supervised classification models and signal pre-processing with two different approaches: a selection of features or the use of broadband spectra, with an example application on marine flysch cherts from the central Pyrenes (France) presenting similar micropaleontological and textural features.< Leer menos

URI

https://oskar-bordeaux.fr/handle/20.500.12278/206657

DOI

http://dx.doi.org/10.1016/j.chemolab.2025.105411

Proyecto europeo

Spectroscopy and Geochemistry of chert. Reconstructing human mobility in the Pyrenees from the first Modern Humans to the last Pleistocene hunter-gatherers

Orígen

Importado de Hal

Centros de investigación

Archéosciences Bordeaux - UMR 6034