georefid:2003-079107SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2003-079107<gco:CharacterString>Oxygen and carbon isotope records of calcareous nannofossils for the past 1 Ma in the southern South China Sea</gco:CharacterString>2002-01-01publicationgeorefid:2003-079107Liu ChuanlianTongji University, Shanghai, ChinaauthorCheng XinrongChinese Academy of Sciences, ChinaauthorZhu YouhuaauthorTian JunauthorXia PeifenauthorScience Press, Beijing, ChinapublisherdocumentHardcopyChinese Science Bulletin47 (10)798-803Oxygen and carbon isotopic analyses have been carried out on calcareous nannofossils from ODP Site 1143 in the southern South China Sea. The results demonstrate that the delta (super 18) O values of calcareous nannofossils for the past 1 Ma vary systematically with those of planktonic and benthic foraminifera form the same site. But the average delta (super 18) O value of nannofossils is 1.869 per mil higher than that of planktonic foraminifera, and is 3.855 per mil lower than that of benthic foraminifera. There are systematic differences between the delta (super 13) C values of nannofossils, planktonic foraminifera and benthic foraminifera. The average delta (super 13) C of nannofossils is 0.756 per mil higher than that of benthic foraminifera, and is 0.460 per mil lower than that of planktonic foraminifera. The delta (super 13) C values of nannofossils exhibit a significant positive shift beginning near isotope stage 14 and lasting until stage 8. This study also finds that there is a close relationship between the delta (super 13) C of nannofossils and the percentage of Florisphaera profunda. This implies that the delta (super 13) C of nannofossils can be used as an indicator of sea water surface paleoproductivity.completedQuaternary geologyIsotope geochemistryalgaebenthic taxaC-13/C-12carbonCenozoicForaminiferageochemical indicatorsgeochemistryHoloceneInvertebrataisotope ratiosisotopesLeg 184microfossilsmiddle PleistocenenannofossilsNorth PacificNorthwest PacificO-18/O-16Ocean Drilling ProgramODP Site 1143oxygenPacific Oceanpaleo-oceanographypaleoclimatologypaleoenvironmentpaleoproductivityplanktonic taxaPlantaePleistoceneProtistaQuaternarySouth China Seastable isotopesWest Pacificurn:org.iodp:exp:184urnlargerWorkCitationcampaignurn:org.iodp:exp:184:site:1143urnlargerWorkCitationstudyurn:org.iodp:exp:184urnlargerWorkCitationcampaignEnglishgeoscientificInformation113.1707113.17079.21439.2143