georefid:2006-059461SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2006-059461<gco:CharacterString>Abrupt increase of calcium carbonate contents in the Campbell Plateau (SW Pacific Ocean) during the deglaciation</gco:CharacterString>2005-01-01publicationgeorefid:2006-059461Khim, B. K.Pusan National University, Department of Marine Science, Pusan, South KoreaauthorLee, Y. J.Korea Institute of Geoscience and Mineral Resources, South KoreaauthorHanrimwon Publishing Company for the Geological Society of Korea, Seoul, South KoreapublisherdocumentHardcopyGeosciences Journal (Seoul)9 (4)325-330A core taken from a mudline of Hole 1120A (ODP Leg 181) located in the Campbell Plateau, Southwest Pacific Ocean documents the deglacial variation of calcium carbonate contents. Stable isotope profiles of planktonic and benthic foraminifera and a radiocarbon AMS dating (11,260 ka) constrain the age of deglaciation. Abrupt increase in the calcium carbonate contents during the deglaciation is a result of complex combination of dissolution, production, and dilution. Dissolution of bottom water plays insignificant role in Site 1120 due to the bathymetric high site above the present lysocline. The reduction in dilution of non-carbonate terrigenous particles is considered as a major reason to show the enhanced calcium carbonate contents during the Holocene. Such chalk-marl cycle of Atlantic-type carbonate variation can be observed in the Southwest Pacific Ocean.completedQuaternary geologyIsotope geochemistryAustralasiaC-13/C-12calcium carbonateCampbell PlateaucarbonCenozoicchemostratigraphyconcentrationcontinental margincoresdeglaciationForaminiferaInvertebrataisotope ratiosisotopesLeg 181lithostratigraphymarine sedimentationmarine sedimentsmicrofossilsNew ZealandO-18/O-16Ocean Drilling ProgramODP Site 1120oxygenPacific Oceanpaleo-oceanographypaleoenvironmentproductivityProtistaQuaternarysedimentationsedimentation ratessedimentsSouth PacificSouthwest Pacificstable isotopesupper QuaternaryWest Pacificurn:org.iodp:exp:181urnlargerWorkCitationcampaignurn:org.iodp:exp:181:site:1120urnlargerWorkCitationstudyurn:org.iodp:exp:181urnlargerWorkCitationcampaignEnglishgeoscientificInformation173.2218173.2218-50.0349-50.0349