georefid:2002-013603SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2002-013603<gco:CharacterString>Isotopic variation in late Cenomanian to early Turonian Foraminifera and matrix from DSDP Site 551 (Goban Spur, Northeast Atlantic)</gco:CharacterString>1999-01-01publicationgeorefid:2002-013603Price, G. D.University of Plymouth, Department of Geological Sciences, Plymouth, United KingdomauthorSellwood, B. W.University of Reading, United KingdomauthorUssher Society, Bristol, United KingdompublisherdocumentHardcopyIn: Williams, Brian J. (editor), Geoscience in South-West England9, Part 4297-299Stable isotopic measurements have been made on both planktonic foraminifera and coccolith-rich matrix of Cretaceous (latest Cenomanian-early Turonian) age from DSDP site 551 (Goban Spur, Northeast Atlantic). The foraminifera display a delta (super 18) O range of 1.1 to 2.2 per mil (PDB) whilst the delta (super 13) C values are confined to a narrower range of 2.0 to 2.1 per mil (PDB). The preservation of the foraminifera has been assessed through geochemistry and scanning electron microscopy and indicates that they show evidence of some diagenetic alteration. Consequently palaeotemperature estimates using these values are deemed to be in general unreliable. The delta (super 13) C of the matrix (in conjunction with published data) show heaviest values during the latest Cenomanian. The data are thus consistent with the widely observed positive carbon isotope excursion associated with the latest Cenomanian oceanic anoxic event.completedStratigraphyIsotope geochemistryalgaeanaerobic environmentAtlantic OceanbiochemistryC-13/C-12carboncarbonate rocksCenomanianchalkCoccolithophoraceaecoresCretaceousDeep Sea Drilling ProjectdiagenesisDSDP Site 551ForaminiferafossilizationgeochemistryGlobigerinaceaGlobotruncanaGlobotruncanidaeGoban SpurInvertebrataIPODisotope ratiosisotopesLeg 80lower Turonianmarine environmentmatrixMesozoicmicrofossilsNorth AtlanticNortheast AtlanticO-18/O-16oxygenpaleo-oceanographypaleoecologyplanktonic taxaPlantaeProtistaRotaliinaRotaliporasedimentary rocksSEM datastable isotopestrace elementsTuronianupper CenomanianUpper Cretaceousurn:org.iodp:exp:80urnlargerWorkCitationcampaignurn:org.iodp:exp:80:site:551urnlargerWorkCitationstudyurn:org.iodp:exp:80urnlargerWorkCitationcampaignEnglishgeoscientificInformation-13.3006-13.300548.543848.5439