Afficher la notice abrégée

Link between Indian monsoon rainfall and physical erosion in the Himalayan system during the Holocene: INDIAN MONSOON AND HIMALAYAN EROSION

dc.rights.licenseopenen_US
dc.contributor.authorJOUSSAIN, Ronan
dc.contributor.authorLIU, Zhifei
dc.contributor.authorCOLIN, Christophe
dc.contributor.authorDUCHAMP-ALPHONSE, Stéphanie
dc.contributor.authorYU, Zhaojie
dc.contributor.authorMORÉNO, Eva
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorFOURNIER, Lea
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorZARAGOSI, Sebastien
IDREF: 189039159
dc.contributor.authorDAPOIGNY, Arnaud
dc.contributor.authorMEYNADIER, Laure
dc.contributor.authorBASSINOT, Franck
dc.date.accessioned2024-10-24T11:33:13Z
dc.date.available2024-10-24T11:33:13Z
dc.date.issued2017-09-15
dc.identifier.issn1525-2027en_US
dc.identifier.urioai:crossref.org:10.1002/2016gc006762
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/202706
dc.description.abstractEnMineralogical and geochemical analyses conducted on cores located on the active channellevee system of the northern Bengal Fan are used to establish changes in the weathering pattern and the sediment transport of the Himalayan system, and evaluate the effect of Indian summer monsoon rainfall during the Holocene. Our data indicate that during the Holocene, sediments from the northern Bengal Fan originate mainly from the G-B river system without any significant changes in the relative contribution of these rivers. From 9.8 to around 6 ka, relatively low smectite/(illite1chlorite) ratios and relatively high K/Si* ratios indicate high physical denudation rates of the Himalayan highlands together with a rapid transfer of the detrital material to the Bengal Fan. The period between 9.2 and 7 ka is associated to lower values of K/ Si* and corresponds to the maximum of Indian monsoon rainfall which indicates a more important chemical weathering material that rapidly transits by the G-B river system without a long storage in the Indo- Gangetic plain. From 6.0 ka to present day, higher smectite/(illite1chlorite) ratio and lower K/Si* ratio document a gradual increase of sediments originated from the Indo-Gangetic plain, characterized by higher degree of chemical weathering. During the last 2.5 ka, the drastic increase in the smectite/(illite1chlorite) ratio could be associated to enhanced alteration of the plain soils due to anthropogenic activity. The comparison of mineralogical and geochemical data with previous reconstructions of the Indian monsoon dynamic indicates a rapid response of erosion and sediment transfer of the G-B river system to changes of monsoon rainfall intensity.
dc.language.isoENen_US
dc.sourcecrossref
dc.title.enLink between Indian monsoon rainfall and physical erosion in the Himalayan system during the Holocene: INDIAN MONSOON AND HIMALAYAN EROSION
dc.typeArticle de revueen_US
dc.identifier.doi10.1002/2016gc006762en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalGeochemistry, Geophysics, Geosystemsen_US
bordeaux.page3452-3469en_US
bordeaux.volume18en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue9en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamGEOLSEDen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
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=Geochemistry,%20Geophysics,%20Geosystems&rft.date=2017-09-15&rft.volume=18&rft.issue=9&rft.spage=3452-3469&rft.epage=3452-3469&rft.eissn=1525-2027&rft.issn=1525-2027&rft.au=JOUSSAIN,%20Ronan&LIU,%20Zhifei&COLIN,%20Christophe&DUCHAMP-ALPHONSE,%20St%C3%A9phanie&YU,%20Zhaojie&rft.genre=article


Fichier(s) constituant ce document

Thumbnail
Nom:
2016GC006762.pdf
Taille:
4.073Mo
Format:
PDF
Voir/Ouvrir

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

Afficher la notice abrégée