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dc.contributor.authorAndersson, Carineng
dc.contributor.authorJansen, Eysteineng
dc.date.accessioned2004-07-12T09:08:43Z
dc.date.accessioned2004-08-03T12:58:21Z
dc.date.accessioned2004-08-26T11:57:54Z
dc.date.available2004-07-12T09:08:43Z
dc.date.available2004-08-03T12:58:21Z
dc.date.available2004-08-26T11:57:54Z
dc.date.issued2003-03-12eng
dc.identifier.issn0883-8305eng
dc.identifier.urihttp://hdl.handle.net/1956/384
dc.description.abstractOxygen and carbon isotope records are presented for the benthic foraminifer Cibicidoides wuellerstorfi from upper middle through lower upper Miocene (11.6–8.2 Ma) sediments recovered at intermediate water depth (1134 m) at Ocean Drilling Program Site 982 on Rockall Plateau. Oxygen isotopic values generally lighter than those for the Holocene indicate significantly warmer intermediate waters and/or less global ice volume during the late middle to early late Miocene than at the present. The most depleted oxygen isotope values occurred at around 10.5 Ma. After this time a long-term increase in d18O suggests a gradual increase in global ice volume and/or cooling of intermediate waters during the late Miocene. Comparison of the intermediate depth benthic foraminiferal carbon isotope record from Site 982 and records from various North Atlantic deep sites shows that intermediate waters were generally better ventilated than deep waters between 11.6 and 9.6 Ma. During this time period, increased ventilation of intermediate waters was linked to cooling or the build up of polar ice caps. The Mi events originally proposed by Miller et al. [1991b] and Wright and Miller [1992] are difficult to identify with certainty in sediments sampled at high resolution (<104 year). Comparison of the highresolution benthic d18O records from ODP Site 982 with the low-resolution benthic d18O record from Monte Gibliscemi (Mediterranean) show that Mi events, if real, may not be of importance as a stratigraphic tool in upper Miocene sedimentary sequences.en
dc.format.extent50007 byteseng
dc.format.extent453787 byteseng
dc.format.extent183 byteseng
dc.format.mimetypeapplication/pdfeng
dc.format.mimetypetext/plaineng
dc.language.isoengeng
dc.publisherAmerican Geophysical Unioneng
dc.subjectPaleoceanographyeng
dc.subjectStable isotopeseng
dc.subjectNorth Atlantic Oceaneng
dc.titleA Miocene (8–12 Ma) intermediate water benthic stable isotope record from the northeastern Atlantic, ODP Site 982eng
dc.typeJournal articleeng
dc.rights.holderCopyright 2003 the American Geophysical Union
dc.type.versionpublishedVersioneng
bora.peerreviewedPeer reviewedeng
bora.journalTitlePaleoceanographyeng
bibo.volume18eng
bibo.issue1eng
bora.cristinID399372eng
bibo.number1013eng
bibo.doihttp://dx.doi.org/10.1029/2001pa000657eng
dc.identifier.cristinID399372eng
dc.identifier.doihttp://dx.doi.org/10.1029/2001pa000657


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