georefid:2001-071968SEDIS 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=2001-071968<gco:CharacterString>Mise au point d'un protocole experimental de separation granulometrique d'assemblages de nannofossiles calcaires; applications paleoecologiques et geochimiques A new experimental protocol for granulometric separation of calcareous nannofossil assemblages; paleoecological and geochemical applications</gco:CharacterString>2001-01-01publicationgeorefid:2001-071968Minoletti, FabriceUniversite Pierre et Marie Curie, Departement de Geologie Sedimentaire, Paris, FranceauthorGardin, SilviaETH-Zentrum, SwitzerlandauthorNicot, ElisabethauthorRenard, MauriceauthorSpezzaferri, SilviaauthorSociete Geologique de France, Paris, FrancepublisherdocumentHardcopyBulletin de la Societe Geologique de France172 (4)437-446Calcareous nannofossils play an important role in biostratigraphy and paleoecology, though their study is often complicated by their reduced size. The methodology presented herein allows to separate the nannofossil assemblage into granulometrically and taxonomically homogeneous fractions. This method permits :a) the concentration of rare taxa in order to simplify their morphometric study; b) the geochemical analysis (stable isotopes and trace elements) of these fractions. The latter is helpful in many cases, especially when the analysis of major or minor taxa constituent of the assemblage is greatly complicated by the reduced particles dimensions. In this way, it will be possible to bring light to the ecological parameters of these taxa, as calcification temperature and other ecological requirements (salinity, nutrient concentrations).completedPaleobotanyalgaeapplicationsassemblagesbiostratigraphyC-13/C-12carbonCenozoicCoccolithophoraceaeCretaceousDeep Sea Drilling ProjectDSDP Site 74Equatorial Pacificexperimental studiesfiltrationgeochemistrygrain sizeisotope ratiosisotopesK-T boundarylaboratory studiesLeg 8lower PaleoceneMesozoicmicrofossilsmicropaleontologymorphologynannofossilsO-18/O-16oxygenPacific OceanPaleocenepaleoecologyPaleogenePlantaesample preparationseparationstable isotopesstratigraphic boundarytechniquesTertiaryUpper Cretaceousurn:org.iodp:exp:8urnlargerWorkCitationcampaignurn:org.iodp:exp:8:site:74urnlargerWorkCitationstudyurn:org.iodp:exp:8urnlargerWorkCitationcampaignFrenchgeoscientificInformation-136.0548-136.0548-6.1412-6.1412