Magnetic Properties of Cherts from the Basque-Cantabrian Basin and Surrounding Regions: Archeological Implications

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dc.contributor.author Larrasoaña Gorosquieta, Juan Cruz
dc.contributor.author Beamud, Elisabet
dc.contributor.author Olivares, Maitane
dc.contributor.author Murelaga, Xabier
dc.contributor.author Tarriño, Andoni
dc.contributor.author Baceta, Juan I.
dc.contributor.author Etxebarría, Néstor
dc.date.accessioned 2020-09-24T10:17:29Z
dc.date.available 2020-09-24T10:17:29Z
dc.date.issued 2016-04-13
dc.identifier.citation Frontiers in Earth Science, 2016, vol. 4 es_ES
dc.identifier.issn 2296-6463
dc.identifier.uri http://hdl.handle.net/20.500.12468/387
dc.description.abstract We present the first rock magnetic study of archeologically-relevant chert samples from the Basque-Cantabrian basin (BCB) and surrounding regions, which was conducted in order to test the usefulness of non-destructive magnetic properties for assessing chert quality, distinguishing source areas, and identifying heated samples in the archeological record. Our results indicate that the studied BCB cherts are diamagnetic and have very low amounts of magnetic minerals. The only exception is the chert of Artxilondo, which has a median positive magnetic susceptibility associated with larger concentrations of magnetic minerals. But even in this case, the magnetic susceptibility is within the lower range of other archeologically-relevant cherts elsewhere, which indicates that the studied BCB cherts can be considered as flint. The similar median values for all magnetic properties, along with their associated large interquartile ranges, indicates that rock magnetic methods are of limited use for sourcing different types of flint except in some specific contexts involving the Artxilondo flint. With regards to the identification of chert heating in the archeological record, our results indicate only a minor magnetic enhancement of BCB natural flint samples upon heating, which we attribute to the low amount of non-silica impurities. In any case, the diamagnetic behavior of most BCB natural flints, along with the local use only of the Artxilondo type, suggests that any flint tool within the core of the BCB with positive magnetic susceptibility values is likely to have been subjected to heating for improving its knapping properties. Further studies are necessary to better identify the type, origin and grain size of magnetic minerals in BCB natural flints, and to apply non-destructive magnetic properties to flint tools in order to identify the use of heat treatment in the BCB archeological record. es_ES
dc.description.sponsorship Unidad de Zaragoza, Instituto Geológico y Minero de España, España es_ES
dc.description.sponsorship Laboratori de Paleomagnetisme, Institut de Ciències de la Terra Jaume Almera, España es_ES
dc.description.sponsorship Laboratori de Paleomagnetisme, Universitat de Barcelona, España es_ES
dc.description.sponsorship Departamento de Química Analítica, Universidad del País Vasco, España es_ES
dc.description.sponsorship Departamento de Estratigrafía y Paleontología, Universidad del País Vasco, España es_ES
dc.description.sponsorship Centro Nacional de Investigación sobre la Evolución Humana, España es_ES
dc.language.iso en es_ES
dc.publisher Lausanne Frontiers Media es_ES
dc.relation GUI15/34 es_ES
dc.rights Acceso abierto es_ES
dc.subject environmental magnetism es_ES
dc.subject chert es_ES
dc.subject flint knapping es_ES
dc.subject archeology es_ES
dc.subject Basque-Cantabrian basin es_ES
dc.title Magnetic Properties of Cherts from the Basque-Cantabrian Basin and Surrounding Regions: Archeological Implications es_ES
dc.type Postprint es_ES
dc.relation.publisherversion https://www.frontiersin.org/articles/10.3389/feart.2016.00035/full es_ES
dc.description.funder Universidad del País Vasco, España es_ES
dc.identifier.doi https://doi.org/10.3389/feart.2016.00035 es_ES
dc.coverage.spatialStudy País Vasco, Cantabria es_ES


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