Afficher la notice abrégée

Investigating the effect of diagenesis on ESR dating of Middle Stone Age tooth samples from the open-air site of Lovedale, Free State, South Africa

hal.structure.identifierCentro Nacional de Investigación sobre la Evolución Humana [CENIEH]
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierGéochrononologie Traceurs Archéométrie [GEOTRAC]
hal.structure.identifierUniversity of Tübingen
hal.structure.identifierCentre de recherche francais de Jérusalem [CRFJ]
dc.contributor.authorRICHARD, Maïlys
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierGéochrononologie Traceurs Archéométrie [GEOTRAC]
dc.contributor.authorPONS-BRANCHU, Edwige
hal.structure.identifierDepartment of Chemical Research Support
dc.contributor.authorCARMIELI, Raanan
hal.structure.identifierDepartment of Chemical Research Support
dc.contributor.authorKAPLAN-ASHIRI, Ifat
hal.structure.identifierCentro Nacional de Investigación sobre la Evolución Humana [CENIEH]
dc.contributor.authorALVARO GALLO, Ana
hal.structure.identifierDipartimento di Geoscienze [Padova]
dc.contributor.authorRICCI, Giulia
hal.structure.identifierItalian National agency for new technologies, Energy and sustainable economic development [Frascati] [ENEA]
dc.contributor.authorCANEVE, Luisa
hal.structure.identifierEberhard Karls Universität Tübingen = Eberhard Karls University of Tuebingen
dc.contributor.authorWROTH, Kristen
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierGéochrononologie Traceurs Archéométrie [GEOTRAC]
dc.contributor.authorDAPOIGNY, Arnaud
hal.structure.identifierArchéosciences Bordeaux
dc.contributor.authorTRIBOLO, Chantal
hal.structure.identifierWeizmann Institute of Science [Rehovot, Israël]
dc.contributor.authorBOARETTO, Elisabetta
hal.structure.identifierArchéosciences Bordeaux
dc.contributor.authorTOFFOLO, Michael
dc.date.issued2022-03
dc.identifier.issn1871-1014
dc.description.abstractEnTeeth are usually targeted for dating archaeological sites because they are less prone to dissolution, in comparison with bones. However, despite this apparent resistance, teeth do undergo diagenesis, which needs to be accounted for in order to obtain accurate ages. In particular, the uptake of trace elements such as uranium in dental tissues needs to be considered for dose rate determination when dated using electron spin resonance(ESR). Characterising the mineralogy and structural integrity of samples prior to dating may thus provide important information related to their state of preservation, especially in the case of teeth whose U content can significantly affect the dose rate. In this study, we dated five teeth of small-sized bovids using combined ESR/U-series dating. They were collected at the Middle Stone Age site of Lovedale, located in the central interior of South Africa. Micromorphology provided sedimentary context to the samples, which were recovered from a layer of gravel rich in faunal remains. Using cathodoluminescence, laser-induced fluorescence, Fourier transform infrared spectroscopy and Raman micro-spectroscopy we assessed the degree of preservation of the enamel. Results reveal that carbonate hydroxyapatite underwent post-depositional alteration, based on its molecular structure and elemental composition. Although the teeth all originate from the same layer and were sampled in the same 1-m square and at asimilar elevation, U-content in the enamel differs highly from one tooth to the other, with values ranging from 1.7 to 29.6 ppm. These values are correlated with equivalent doses (De) from 228 to 923 Gy and are consistent with variations in crystallinity determined with vibrational spectroscopy. We also investigated the possible saturation of the ESR signal, by repeating measurements with microwave power values from 1 to 20 mW.Despite such diversity in U-content, the ages calculated assuming an early uptake of U all fall within the same range, from 63 ± 8 ka to 68 ± 15 ka and may only represent a minimum estimate.
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
dc.language.isoen
dc.publisherElsevier
dc.subjectPANOPLY
dc.subject.enElectron spin resonance
dc.subject.enUranium-series
dc.subject.enDiagenesis
dc.subject.enInfrared spectroscopy
dc.subject.enRaman micro-spectroscopy
dc.subject.enCathodoluminescence
dc.subject.enLaser-induced fluorescence
dc.subject.enMicromorphology
dc.title.enInvestigating the effect of diagenesis on ESR dating of Middle Stone Age tooth samples from the open-air site of Lovedale, Free State, South Africa
dc.typeArticle de revue
dc.identifier.doi10.1016/j.quageo.2022.101269
dc.subject.halPlanète et Univers [physics]/Océan, Atmosphère
dc.subject.halPlanète et Univers [physics]/Interfaces continentales, environnement
bordeaux.journalQuaternary Geochronology
bordeaux.page101269
bordeaux.volume69
bordeaux.peerReviewedoui
hal.identifierhal-03607523
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03607523v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Quaternary%20Geochronology&rft.date=2022-03&rft.volume=69&rft.spage=101269&rft.epage=101269&rft.eissn=1871-1014&rft.issn=1871-1014&rft.au=RICHARD,%20Ma%C3%AFlys&PONS-BRANCHU,%20Edwige&CARMIELI,%20Raanan&KAPLAN-ASHIRI,%20Ifat&ALVARO%20GALLO,%20Ana&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée