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Multi-proxy paleoenvironmental reconstruction of Robertson Bay, East Antarctica, since the last glacial period

dc.rights.licenseopenen_US
dc.contributor.authorTORRICELLA, Fiorenza
dc.contributor.authorTRUAX, Olivia
dc.contributor.authorMORELLI, Danilo
dc.contributor.authorBATTAGLIA, Francesca
dc.contributor.authorCORRADI, Nicola
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
hal.structure.identifierInstituto Andaluz de Ciencias de la Tierra [IACT]
dc.contributor.authorCROSTA, Xavier
dc.contributor.authorDE SANTIS, Laura
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorETOURNEAU, Johan
dc.contributor.authorFINOCCHIARO, Furio
dc.contributor.authorGALLERANI, Andrea
dc.contributor.authorGENIRAM, Andrea
dc.contributor.authorGIGLIO, Federico
dc.contributor.authorGINNANE, Catherine
dc.contributor.authorLEVY, Richard
dc.contributor.authorMISEROCCHI, Stefano
dc.contributor.authorMORIGI, Caterina
dc.contributor.authorPOCHINI, Enrico
dc.contributor.authorRIESSELMAN, Christina
dc.contributor.authorTURNBULL, Jocelyn
dc.contributor.authorCOLIZZA, Ester
dc.date.accessioned2025-04-14T08:50:47Z
dc.date.available2025-04-14T08:50:47Z
dc.date.issued2024-05
dc.identifier.issn0277-3791en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/206161
dc.description.abstractEnAntarctic fjords and coastal bays are excellent traps for sediment and represent key areas for high-resolutioninvestigation of past environmental conditions. Robertson Bay is an understudied coastal area located at theconfluence of the Ross Sea and the Southern Ocean. Recently obtained seafloor morphology data indicate thepresence of a cross-shelf elongated valley, composed of three minor basins separated by sills and seabed ridgeswith an arcuate shape. Several cores were collected within the basins, and investigated using a multiproxyapproach including sedimentological, chemical, geochemical, and micropaleontological characterization toreconstruct the paleoenvironmental evolution from the last glacial period to present. The ages of two of thesecores are constrained using ramped pyrolysis oxidation radiocarbon dating. Four sedimentary facies were recognisedfrom which we developed a sedimentary model covering the last 21,000 years (21 ka BP). Our recordprovide evidence for a covering ice shelf cover from 21 to 16.5 ka BP, which gradually receded between 16,5 and11 ka BP due to the progressive intrusion of modified Circumpolar Deep Water, thereby promoting the formationof Ice Shelf Water and High Salinity Shelf Water. From 11 to 5,8 ka BP, the ice shelf continued shrinking andnutrient-rich of modified Circumpolar Deep Water penetration onto the continental shelf progressively favoureddiatom blooms and a general increase in primary productivity until 5.8 ka BP. The Late Holocene is characterisedby an alternation of prolonged sea ice cover with stratified water column and strong bottom current with prolongedsea-ice free season with the intrusion of modified Circumpolar Deep Water and very slow energy bottomcurrent.
dc.language.isoENen_US
dc.subject.enRobertson bay
dc.subject.enAntarctica
dc.subject.enSedimentary facies
dc.subject.enDiatoms
dc.subject.enRamped pyrolysis oxidation
dc.title.enMulti-proxy paleoenvironmental reconstruction of Robertson Bay, East Antarctica, since the last glacial period
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.quascirev.2024.108629en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalQuaternary Science Reviewsen_US
bordeaux.page108629en_US
bordeaux.volume332en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamPALEOen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-04634101
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Quaternary%20Science%20Reviews&rft.date=2024-05&rft.volume=332&rft.spage=108629&rft.epage=108629&rft.eissn=0277-3791&rft.issn=0277-3791&rft.au=TORRICELLA,%20Fiorenza&TRUAX,%20Olivia&MORELLI,%20Danilo&BATTAGLIA,%20Francesca&CORRADI,%20Nicola&rft.genre=article


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