georefid:2003-047712SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2003-047712<gco:CharacterString>Quaternary high-resolution opal record and its paleoproductivity implication at ODP Site 1143, southern South China Sea</gco:CharacterString>2003-01-01publicationgeorefid:2003-047712Wang RujianTongji University, Laboratory of Marine Geology, Shanghai, ChinaauthorLi JianauthorScience Press, Beijing, ChinapublisherdocumentHardcopyChinese Science Bulletin48 (4)363-367The correlation of opal content and MAR with oxygen isotopic records of benthonic foraminifera at Site 1143, southern South China Sea indicates that, since about 900 ka, the increasing opal content and MAR during the interglacial periods is inferred to reflect the higher surface productivity, for the intensified summer monsoon during the interglacial periods would result in the enhanced upwelling and nutrient supply. Time-sequence spectral analyses of oxygen isotopic record, opal content and MAR at intervals of 0-900 ka reveal that the changes of surface productivity were dominantly forced by the variations of the earth orbital cycles.completedQuaternary geologyIsotope geochemistrybenthic taxaCenozoicchemostratigraphyForaminiferaframework silicatesgeochemistryhigh-resolution methodsinterglacial environmentInvertebrataisotope ratiosisotopesLeg 184microfossilsNorth PacificNorthwest PacificO-18/O-16Ocean Drilling ProgramODP Site 1143opaloxygenPacific OceanproductivityProtistaQuaternarysedimentationsilica mineralssilicatesSouth China Seastable isotopesWest Pacificurn:org.iodp:exp:184urnlargerWorkCitationcampaignurn:org.iodp:exp:184:site:1143urnlargerWorkCitationstudyurn:org.iodp:exp:184urnlargerWorkCitationcampaignEnglishgeoscientificInformation113.1707113.17079.21439.2143