Climatic control of sediment transport from the Himalayas to the proximal NE Bengal Fan during the last glacial-interglacial cycle
| dc.rights.license | open | en_US |
| hal.structure.identifier | Géosciences Paris Sud [GEOPS] | |
| dc.contributor.author | JOUSSAIN, Ronan | |
| hal.structure.identifier | Géosciences Paris Sud [GEOPS] | |
| dc.contributor.author | COLIN, Christophe | |
| hal.structure.identifier | State Key Laboratory of Marine Geology [Shanghai] | |
| dc.contributor.author | LIU, Zhifei | |
| hal.structure.identifier | Institut de Physique du Globe de Paris [IPGP] | |
| dc.contributor.author | MEYNADIER, L. | |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | FOURNIER, Lea | |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | FAUQUEMBERGUE, Kelly
IDREF: 233247483 | |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | ZARAGOSI, Sebastien | |
| hal.structure.identifier | Géosciences Paris Sud [GEOPS] | |
| dc.contributor.author | SCHMIDT, Frédéric | |
| hal.structure.identifier | Institut de Physique du Globe de Paris [IPGP] | |
| dc.contributor.author | ROJAS, Virjinia | |
| hal.structure.identifier | Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE] | |
| hal.structure.identifier | Paléocéanographie [PALEOCEAN] | |
| dc.contributor.author | BASSINOT, F. | |
| dc.date.accessioned | 2024-10-04T08:57:44Z | |
| dc.date.available | 2024-10-04T08:57:44Z | |
| dc.date.issued | 2016 | |
| dc.identifier.issn | 0277-3791 | en_US |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/202251 | |
| dc.description.abstractEn | Clay mineralogy, siliciclastic grain-size, major elements, 87Sr/86Sr, and εNd analyses of deep-sea sediments cored in the north-eastern Bay of Bengal are used to reconstruct evolution of detrital sources and sediment transport to the proximal part of the Bengal deep-sea fan during the last climatic cycle. εNd values (−13.3 to −9.7) and 87Sr/86Sr ratios (0.721–0.733) indicate a mixture of sediments originating from the Ganges-Brahmaputra rivers and the Indo-Burman ranges. Interglacial Marine Isotopic Stages (MIS) 5 and 1 are associated with a higher contribution of sediments from the Ganges-Brahmaputra river system than is the case for glacial MIS 6, 4, 3, and 2. Siliciclasitic grain-size combined with Si/Al and Si/Fe ratios indicate coarser glacial sediments with numerous turbidite layers. Glacial turbidite layers display similar clay mineralogical compositions to hemipelagic sediments. Only few of turbidite layers (MIS 6, 4, and 2) are slightly unradiogenic (εNd −13.3), suggesting a higher contribution of Ganges-Brahmaputra river sediments. Independently of changes in the sedimentary sources, the smectite/(illite + chlorite) ratio of cores located on the NE Bengal Fan indicates higher inputs of primary minerals (illite and chlorite) from the highlands of the river basins (relief) during glacial MIS 6, 4, 3, and 2 and an increased contribution of pedogenic minerals (smectite and kaolinite) during interglacial MIS 5 and 1. Maximum smectite/(illite + chlorite) ratios during the warm sub-stages of MIS 5 suggest an intensification of summer monsoon rainfall associated with higher rates of physical erosion of the Indo-Gangetic flood-plain and/or dominant summer hydrological conditions transporting a higher proportion of sediments deriving from the Ganges-Brahmaputra rivers to the NE Bengal Fan. In addition, a higher production of smectite in soils of the Indo-Gangetic flood-plain during periods of intensification of monsoon rainfall cannot be excluded. | |
| dc.description.sponsorship | LabEx Institut Pierre Simon Laplace (IPSL): Understand climate and anticipate future changes - ANR-10-LABX-0018 | en_US |
| dc.language.iso | EN | en_US |
| dc.subject.en | Panoply | |
| dc.title.en | Climatic control of sediment transport from the Himalayas to the proximal NE Bengal Fan during the last glacial-interglacial cycle | |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.1016/j.quascirev.2016.06.016 | en_US |
| dc.subject.hal | Planète et Univers [physics] | en_US |
| bordeaux.journal | Quaternary Science Reviews | en_US |
| bordeaux.page | 1-16 (IF 4,521) | en_US |
| bordeaux.volume | 148: | en_US |
| bordeaux.hal.laboratories | EPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805 | en_US |
| bordeaux.institution | Université de Bordeaux | en_US |
| bordeaux.institution | CNRS | en_US |
| bordeaux.team | GEOLSED | en_US |
| bordeaux.peerReviewed | oui | en_US |
| bordeaux.inpress | non | en_US |
| bordeaux.import.source | hal | |
| hal.identifier | hal-01415978 | |
| hal.version | 1 | |
| hal.popular | non | en_US |
| hal.audience | Internationale | en_US |
| hal.export | false | |
| workflow.import.source | hal | |
| dc.rights.cc | Pas de Licence CC | en_US |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Quaternary%20Science%20Reviews&rft.date=2016&rft.volume=148:&rft.spage=1-16%20(IF%204,521)&rft.epage=1-16%20(IF%204,521)&rft.eissn=0277-3791&rft.issn=0277-3791&rft.au=JOUSSAIN,%20Ronan&COLIN,%20Christophe&LIU,%20Zhifei&MEYNADIER,%20L.&FOURNIER,%20Lea&rft.genre=article |
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