georefid:2006-012273SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1029/2002PA000848<gco:CharacterString>Extreme polar warmth during the Cretaceous greenhouse? Paradox of the late Turonian delta (super 18) O record at Deep Sea Drilling Project Site 511</gco:CharacterString>2003-01-01publicationgeorefid:2006-012273doi:10.1029/2002PA000848Bice, Karen L.Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United StatesauthorHuber, Brian T.Smithsonian National Museum of Natural History, United StatesauthorNorris, Richard D.University of California at San Diego, United StatesauthorAmerican Geophysical Union, Washington, DC, United StatespublisherdocumentDigitalPaleoceanography18 (2)Oxygen isotope data for upper Turonian planktonic foraminifera at Deep Sea Drilling Project Site 511 (Falkland Plateau) exhibit an excursion values coincident with the warmest tropical temperature estimates yet obtained for the open ocean. The lowest planktonic foraminifer delta (super 18) O values suggest that the upper ocean was as warm as 30-32 degrees C consistent with temperatures estimated from apparently coeval mollusc delta (super 18) O from nearby James Ross Island. Glassy textural preservation, a well-defined depth distribution in Site 511 planktonics, low sediment burial temperature, and lack of evidence of highly depleted pore waters argue against diagenesis as the cause of the very depleted planktonic values. (modified journ. abstr.)completedStratigraphyalgaeAntarcticaAtlantic OceanCretaceousDeep Sea Drilling ProjectDSDP Site 511Falkland PlateauForaminiferaglobal changeglobal warminggreenhouse effectInvertebrataIPODisotope ratiosisotopesJames Ross IslandLeg 71MesozoicmicrofossilsMolluscanannofossilsO-18/O-16oxygenpaleo-oceanographypaleoatmospherepaleoclimatologypaleoecologypaleolatitudepaleomagnetismpaleosalinityplanktonic taxaPlantaeProtistareconstructionSouth Atlanticstable isotopessubantarctic regionsTuronianUpper Cretaceousupper Turonianurn:org.iodp:exp:71urnlargerWorkCitationcampaignurn:org.iodp:exp:71:site:511urnlargerWorkCitationstudyurn:org.iodp:exp:71urnlargerWorkCitationcampaignEnglishgeoscientificInformation-59.0000-46.5818-64.3000-51.0017James Ross IslandNSF Grants ATM-0000545 and EAR-9909658application/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://www.agu.org/journals/pa/pa0302/2002PA000848/2002PA000848.pdfdownload