A revised chronostratigraphic framework for International Ocean Discovery Program Expedition 355 sites in Laxmi Basin, eastern Arabian Sea

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUCL-
Autor(es): dc.contributorTexas A&M Univ-
Autor(es): dc.contributorUniv Calif San Diego-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorBanaras Hindu Univ-
Autor(es): dc.contributorXiamen Univ-
Autor(es): dc.contributorOhio State Univ-
Autor(es): dc.contributorNatl Inst Oceanog-
Autor(es): dc.creatorRoutledge, Claire M.-
Autor(es): dc.creatorKulhanek, Denise K.-
Autor(es): dc.creatorTauxe, Lisa-
Autor(es): dc.creatorScardia, Giancarlo [UNESP]-
Autor(es): dc.creatorSingh, Arun D.-
Autor(es): dc.creatorSteinke, Stephan-
Autor(es): dc.creatorGriffith, Elizabeth M.-
Autor(es): dc.creatorSaraswat, Rajeev-
Data de aceite: dc.date.accessioned2022-02-22T00:05:47Z-
Data de disponibilização: dc.date.available2022-02-22T00:05:47Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1017/S0016756819000104-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/195429-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/195429-
Descrição: dc.descriptionInternational Ocean Discovery Program Expedition 355 drilled Sites U1456 and U1457 in Laxmi Basin (eastern Arabian Sea) to document the impact of the South Asian monsoon on weathering and erosion of the Himalaya. We revised the chronostratigraphic framework for these sites using a combination of biostratigraphy, magnetostratigraphy and strontium isotope stratigraphy. The sedimentary section at the two sites is similar and we divided it into six units bounded by unconformities or emplaced as a mass-transport deposit (MTD). Unit 1 underlies the MTD, and is of early-middle Miocene age at Site U1456 and early Paleocene age at Site U1457. An unconformity (U1) created by emplacement of the MTD (unit 2) during the late Miocene Epoch (at c. 9.83-9.69 Ma) separates units 1 and 2 and is identified by a marked change in lithology. Unit 3 consists of hemipelagic sediment with thin interbeds of graded sandstone of late Miocene age, separated from unit 4 by a second unconformity (U2) of 0.5-0.9 Myr duration. Unit 4 consists of upper Miocene interbedded mudstone and sandstone and hemipelagic chalk deposited between c. 8 and 6 Ma. A c. 1.4-1.6 Myr hiatus (U3) encompasses the Miocene-Pliocene boundary and separates unit 4 from unit 5. Unit 5 includes upper Pliocene - lower Pleistocene siliciclastic sediment that is separated from unit 6 by a c. 0.45 Myr hiatus (U4) in the lower Pleistocene sediments. Unit 6 includes a thick package of rapidly deposited Pleistocene sand and mud overlain by predominantly hemipelagic sediment deposited since c. 1.2 Ma.-
Descrição: dc.descriptionUS Science Support Program (USSSP) National Science Foundation (NSF)-
Descrição: dc.descriptionNSF-
Descrição: dc.descriptionUCL, Dept Earth Sci, London WC1E 6BT, England-
Descrição: dc.descriptionTexas A&M Univ, Int Ocean Discovery Program, College Stn, TX 77845 USA-
Descrição: dc.descriptionUniv Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Geociencias & Ciencias Exatas, BR-19014020 Rio Claro, Brazil-
Descrição: dc.descriptionBanaras Hindu Univ, Ctr Adv Study Geol, Varanasi 221005, Uttar Pradesh, India-
Descrição: dc.descriptionXiamen Univ, Dept Geol Oceanog, Xiamen 361002, Peoples R China-
Descrição: dc.descriptionXiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361002, Peoples R China-
Descrição: dc.descriptionOhio State Univ, Sch Earth Sci, Columbus, OH 43210 USA-
Descrição: dc.descriptionNatl Inst Oceanog, Geol Oceanog Div, Panaji 403004, Goa, India-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Geociencias & Ciencias Exatas, BR-19014020 Rio Claro, Brazil-
Descrição: dc.descriptionUS Science Support Program (USSSP) National Science Foundation (NSF): OCE1450528-
Descrição: dc.descriptionNSF: EAR1547263-
Formato: dc.format961-978-
Idioma: dc.languageen-
Publicador: dc.publisherCambridge Univ Press-
Relação: dc.relationGeological Magazine-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectbiostratigraphy-
Palavras-chave: dc.subjectmagnetostratigraphy-
Palavras-chave: dc.subjectIODP Sites U1456 and U1457-
Palavras-chave: dc.subjectIndus Fan-
Palavras-chave: dc.subjectNeogene-
Título: dc.titleA revised chronostratigraphic framework for International Ocean Discovery Program Expedition 355 sites in Laxmi Basin, eastern Arabian Sea-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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