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Obsidian in the West Indies? Mysterious Ceramic Age glass artefacts in the Lesser Antilles

hal.structure.identifierDe la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie [PACEA]
hal.structure.identifierArchéosciences Bordeaux
dc.contributor.authorLECK, Arthur
hal.structure.identifierDe la Molécule aux Nanos-objets : Réactivité, Interactions et Spectroscopies [MONARIS]
dc.contributor.authorBELLOT-GURLET, Ludovic
hal.structure.identifierInstitut de Physique du Globe de Paris [IPG Paris]
dc.contributor.authorCARAZZO, Guillaume
hal.structure.identifierIRAMAT - Centre Ernest Babelon [IRAMAT-CEB]
dc.contributor.authorGRATUZE, Bernard
hal.structure.identifierInstitut Universitaire Européen de la Mer [IUEM]
dc.contributor.authorLANGLADE, Jessica
hal.structure.identifierArchéosciences Bordeaux
dc.contributor.authorLE BOURDONNEC, François-Xavier
hal.structure.identifierTravaux et recherches archéologiques sur les cultures, les espaces et les sociétés [TRACES]
hal.structure.identifierMinistère de la Culture [MC]
dc.contributor.authorBRESSY-LEANDRI, Céline
hal.structure.identifierMorgan State University
dc.contributor.authorSHEARN, Isaac
hal.structure.identifierArchéologie des Amériques [ArchAm]
hal.structure.identifierMinistère de la Culture [MC]
dc.contributor.authorSTOUVENOT, Christian
hal.structure.identifierDe la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie [PACEA]
dc.contributor.authorQUEFFELEC, Alain
dc.date.conference2024-04-07
dc.description.abstractEnThe Caribbean islands witnessed a population expansion of horti-ceramicists during the Early Ceramic Age (ca. 500 BC to 750 AD) from the Orinoco Valley to Puerto Rico. Our study focused on 18 lithic artefacts from 7 archaeological sites in Guadeloupe and Dominica, initially thought to be obsidian, a material believed to be absent from the West Indies. We investigated the volcanic or meteoritic origin of this unique and yet unknown material through observation (binocular, SEM, microtomography) and geochemical analyses (PIXE, SEM-EDS, ED-XRF, EPMA, LA-ICP-MS). Elementary analyses appear to refute the hypothesis of a meteoritic impact origin (i.e. identification as tektites). Most of the artefacts have an andesitic composition (< 63% SiO2), which appears to be absolutely unique among 'massive' glasses. The only artifact with a rhyolitic composition, which is more typical for natural glass, has been traced back to Guadeloupe's Volcan du Tuf, where glassy fragments were collected and analysed. The geological source of the other vitreous artefacts that exhibit an andesitic composition remains unknown, despite our efforts to search for the source in the south-western region of Guadeloupe. Geochemical data suggest that it is possible that they could originate from a sub-local subduction-arc volcanism (perhaps from Martinique), although no volcanic vitreous material of this kind has ever been reported worldwide. These results once again highlight the regional mobility of Early Ceramic populations, the production of standard lithic products using a highly original, albeit low-quality, local lithic resource, and provide valuable references for future identification of similar materials.
dc.language.isoen
dc.subject.enObsidian
dc.subject.enVolcanic glass
dc.subject.enAntilles
dc.title.enObsidian in the West Indies? Mysterious Ceramic Age glass artefacts in the Lesser Antilles
dc.typeCommunication dans un congrès
dc.subject.halSciences de l'Homme et Société/Archéologie et Préhistoire
dc.subject.halChimie/Chimie analytique
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géochimie
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Volcanologie
bordeaux.conference.titlePan American Ceramics Congress 2024, Session "Materials Approach to Art, Archaeology, and Architecture in the Americas"
bordeaux.countryPA
bordeaux.conference.cityPanama City
bordeaux.peerReviewedoui
hal.identifierhal-04568558
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.organizerThe American Ceramic Society
hal.conference.end2024-04-11
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04568558v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.au=LECK,%20Arthur&amp;BELLOT-GURLET,%20Ludovic&amp;CARAZZO,%20Guillaume&amp;GRATUZE,%20Bernard&amp;LANGLADE,%20Jessica&amp;rft.genre=unknown


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