georefid:2003-079115SEDIS 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=2003-0791152002-01-01publicationgeorefid:2003-079115Li JianruTongji University, Laboratory of Marine Geology, Shanghai, ChinaauthorWang RujianChinese Academy of Sciences, ChinaauthorLi BaohuaauthorScience Press, Beijing, ChinapublisherdocumentHardcopyChinese Science Bulletin47 (7)596-598The biogenic silica analysis was performed on 463 samples from ODP 184 Site 1143, the southern South China Sea. The results show that the opal content and MAR evidently increased between 12.3 and 5.7 Ma, which was contemporary with the high carbonate and total MARs, reflecting the high biogenic productivity in the late Miocene. This demonstrates the occurrence of the late Miocene "Biogenic Bloom Event" in the southern South China Sea, corresponding to the late Miocene-early Pliocene "Biogenic Bloom Event" in the Indian-Pacific Ocean. The increases of opal content and MAR after the middle Pleistocene (about 0.7 Ma) is inferred to result from the enhanced upwelling and nutrient supply, which was induced by the intensified monsoon circulation after the "Mid-Pleistocene Revolution".completedStratigraphyCenozoicevent stratigraphyframework silicatesLeg 184marine sedimentationMioceneNeogeneNorth PacificNorthwest PacificOcean Drilling ProgramODP Site 1143opalPacific Oceanpaleo-oceanographyproductivitysedimentationsedimentation ratessequence stratigraphysilica mineralssilicatesSouth China SeaTertiaryupper MiocenevariationsWest Pacificurn:org.iodp:exp:184urnlargerWorkCitationcampaignurn:org.iodp:exp:184:site:1143urnlargerWorkCitationstudyurn:org.iodp:exp:184urnlargerWorkCitationcampaignEnglishgeoscientificInformation113.1707113.17079.21439.2143