Afficher la notice abrégée

Insights of Pb isotopic signature into the historical evolution and sources of Pb contamination in a sediment core of the southwestern Iberian Atlantic shelf

dc.rights.licenseopenen_US
dc.contributor.authorMIL-HOMENS, Mário
dc.contributor.authorVALE, Carlos
dc.contributor.authorBRITO, Pedro
dc.contributor.authorNAUGHTON, Filipa
dc.contributor.authorDRAGO, Teresa
dc.contributor.authorRAIMUNDO, Joana
dc.contributor.authorANES, Bárbara
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSCHMIDT, Sabine
IDREF: 131836129
dc.contributor.authorCAETANO, Miguel
dc.date.accessioned2024-09-18T08:58:40Z
dc.date.available2024-09-18T08:58:40Z
dc.date.issued2017-05-01
dc.identifier.issn0048-9697en_US
dc.identifier.urioai:crossref.org:10.1016/j.scitotenv.2017.01.204
dc.identifier.uriorcid:0000-0002-3055-9396:10.1016/j.scitotenv.2017.01.204
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/201647
dc.description.abstractEnStable Pb isotopic ratios and concentrations of Al, Cu and Pb were measured in a 5 m long sediment core (VC2B) retrieved at 96 m water depth in the southwestern Iberian Atlantic shelf. Five phases during the last 9.5 kyrs were identified, two of them (Roman Period and modern mining) marked by a decrease of 206Pb/207Pb ratios reflecting additional inputs of Pb derived from mining activities. The Roman Period was also characterized by high 208Pb/206Pb ratios suggesting the exploitation of the outcropping portion of the orebody intensely weathered when compared with the other formations later mined. The shift of 208Pb/206Pb ratios towards linearity took approximately 1.0 kyrs, which may mirror the time of environmental recovery from the impact of Roman mining activities. The application of a mixing model allowed the quantification of the contribution associated with anthropogenic mining activities to the shelf sediments. The maximum values of Pb contamination occurred in the 20th century. This study gives direct evidence of Pb and Cu exploitation over the last 2000 years. The stable Pb isotopic signatures point to legacy of mining activities that are still the prevailing metal source recorded in the southwestern Iberian Atlantic shelf sediments.
dc.language.isoENen_US
dc.sourcecrossref
dc.sourceorcid
dc.title.enInsights of Pb isotopic signature into the historical evolution and sources of Pb contamination in a sediment core of the southwestern Iberian Atlantic shelf
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.scitotenv.2017.01.204en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalScience of the Total Environmenten_US
bordeaux.page473-484en_US
bordeaux.volume586en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamGEOLSEDen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04701067
hal.version1
hal.date.transferred2024-09-18T08:58:43Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Science%20of%20the%20Total%20Environment&rft.date=2017-05-01&rft.volume=586&rft.spage=473-484&rft.epage=473-484&rft.eissn=0048-9697&rft.issn=0048-9697&rft.au=MIL-HOMENS,%20M%C3%A1rio&VALE,%20Carlos&BRITO,%20Pedro&NAUGHTON,%20Filipa&DRAGO,%20Teresa&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