georefid:2008-080740SEDIS 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=10.2113/gsjfr.38.2.1622008-01-01publicationgeorefid:2008-080740doi:10.2113/gsjfr.38.2.162Huber, Brian T.Smithsonian Institution National Museum of Natural History, Department of Paleobiology, Washington, DC, United StatesauthorMacLeod, Kenneth G.University of Missouri-Columbia, United StatesauthorTur, Nataliya A.All-Russian Geological Institute, Russian FederationauthorCushman Foundation for Foraminiferal Research, Ithaca, NY, United StatespublisherdocumentHardcopyJournal of Foraminiferal Research38 (2)162-182A new chronostratigraphic framework is presented for upper Campanian-Maastrichtian pelagic sediments cored at DSDP/ODP Sites 390A/1049, 1050, and 1052, which were drilled across a 1300-m depth transect on the Blake Nose (subtropical western Atlantic Ocean). The planktonic foraminiferal zonation is based on standard global biozones for this interval, but rare and sporadic occurrence of two zonal biomarkers, Gansserina gansseri and Globotruncana aegyptiaca, precludes reliable identification of the nominate zones for those species. The Pseudoguembelina palpebra Partial-range Zone is defined as a means of subdividing this upper Campanian biostratigraphic interval. Planktonic foraminiferal, calcareous nannofossil and paleomagnetic datums are integrated to construct reliable age-depth curves for each of the Blake Nose drill sites. These age models are largely confirmed by Sr-isotopic data and suggest significant unconformities at various positions within the sections. Compilation of stable isotope datasets for this time interval from the Blake Nose sites reveals no significant shifts in delta (super 18) O and delta (super 13) C at the time of the inoceramid bivalve extinction (now dated as 68.5-68.7 Ma in the Blake Nose sections) and no correlation with proposed Campanian-Maastrichtian glacial intervals. However, benthic warming associated with Deccan volcanism during the late Maastrichtian is supported.completedStratigraphyIsotope geochemistryalgaealkaline earth metalsassemblagesAtlantic OceanbiostratigraphybiozonesBlake NoseBlake PlateauC-13/C-12CampaniancarbonchronostratigraphyCretaceousDeep Sea Drilling ProjectDSDP Site 390ForaminiferaInvertebrataisotope ratiosisotopesLeg 171BLeg 44Maestrichtianmarine environmentMesozoicmetalsmicrofossilsnannofossilsNorth AtlanticO-18/O-16Ocean Drilling ProgramODP Site 1049ODP Site 1050ODP Site 1052oxygenpaleo-oceanographypaleoclimatologypaleoenvironmentplanktonic taxaPlantaeProtistaSenonianSr-87/Sr-86stable isotopesstrontiumUpper Cretaceousurn:org.iodp:exp:171BurnlargerWorkCitationcampaignurn:org.iodp:exp:44urnlargerWorkCitationcampaignurn:org.iodp:exp:44:site:390urnlargerWorkCitationstudyurn:org.iodp:exp:44urnlargerWorkCitationcampaignurn:org.iodp:exp:171A:site:1049urnlargerWorkCitationstudyurn:org.iodp:exp:171AurnlargerWorkCitationcampaignurn:org.iodp:exp:171B:site:1050urnlargerWorkCitationstudyurn:org.iodp:exp:171BurnlargerWorkCitationcampaignurn:org.iodp:exp:171B:site:1052urnlargerWorkCitationstudyurn:org.iodp:exp:171BurnlargerWorkCitationcampaignEnglishgeoscientificInformation-76.3736-76.064429.570030.0832