georefid:2008-118143SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2008-1181432007-01-01publicationgeorefid:2008-118143Bhaumik, Ajoy K.Indian Institute of Technology, Department of Geology and Geophysics, Kharagpur, IndiaauthorGupta, Anil K.University of Delhi, IndiaauthorRaj, M. SundarauthorMohan, K.authorDe, SomaauthorSarkar, SudiptaauthorCouncil of Scientific & Industrial Research, New Delhi, IndiapublisherdocumentHardcopyIn: Nigam, Rajiv (editor), Saraswat, R. (editor), Marine micropaleontological studies from the northern Indian Ocean36 (4)332-341Statistical analyses (factor and cluster) were performed on 30 highest ranked deep-sea benthic foraminifer species from >149 mu m size fraction from Deep Sea Drilling Project Hole 216A to understand Miocene ( approximately 20.5 to approximately 7 Ma) paleoceanographic evolution of the northeastern Indian Ocean. Factor and cluster analyses enabled us to identify five biofacies defining five clusters. Known ecological preferences of benthic foraminifera were used for environmental interpretations. The faunal data documents a shift in deep-sea ventilation and productivity at 15-14 Ma, coinciding with the abrupt cooling in the middle Miocene. This coincides with the beginning of permanent ice sheets in Antarctica during the middle Miocene.completedStratigraphyassemblagesbenthic taxabiofaciesCenozoiccluster analysisDeep Sea Drilling Projectdeep-sea environmentDSDP Site 216faunal listForaminiferaIndian OceanInvertebrataLeg 22marine environmentmicrofossilsMioceneNeogeneNinetyeast Ridgepaleo-oceanographypaleoenvironmentProtistastatistical analysisTertiaryurn:org.iodp:exp:22urnlargerWorkCitationcampaignurn:org.iodp:exp:22:site:216urnlargerWorkCitationstudyurn:org.iodp:exp:22urnlargerWorkCitationcampaignEnglishgeoscientificInformation90.122890.12291.27431.2744