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dc.contributor.authorZamelczyk, Katarzyna
dc.contributor.authorRasmussen, Tine Lander
dc.contributor.authorHusum, Katrine
dc.contributor.authorGodtliebsen, Fred
dc.contributor.authorHald, Morten
dc.date.accessioned2018-02-13T12:35:39Z
dc.date.available2018-02-13T12:35:39Z
dc.date.issued2014-01-14
dc.description.abstractWe present a high-resolution record of calcium carbonate preservation alongside the distribution pattern of planktic foraminifera from the Fram Strait. The record covers the marine isotope stage (MIS) 2, 28.8 to 15.4 kyr, including the Last Glacial Maximum (LGM) and the early deglaciation in multidecadal temporal resolution. The investigation is based on the distribution patterns of planktic foraminifera, stable isotopes, mean shell weight of Neogloboquadrina pachyderma, the degree of fragmentation of planktic shells, CaCO<sub>3</sub> content, and geochemical and sedimentological data. The dissolution proxies indicate long-lasting periods of markedly reduced preservation of calcium carbonate at ~28.8–27.2, ~24.1–23.2, and ~16.6–15.4 kyr in addition to a number of short-lasting periods (< 300 year) during the LGM. These periods are accompanied by a simultaneous and significant reduction in specimens of subpolar planktic foraminifera indicating a southward expansion of Arctic surface water masses. Prolonged periods with high abundances of subpolar foraminiferal species and good preservation of calcium carbonate are attributed to increased influence of Atlantic water masses, which appears to persist throughout most of the MIS 2. Comparison to Holocene (MIS 1) shell weight records shows that the preservation during MIS 2 was overall better, even during the events of dissolution. This was probably a reflection of the low concentration of atmospheric CO<sub>2</sub> at the time.en_US
dc.descriptionSource at <a href=http://doi.org/10.1002/2012PA002448> http://doi.org/10.1002/2012PA002448 </a>en_US
dc.identifier.citationZamelczyk, K., Rasmussen, T.L., Husum, K., Godtliebsen, F., Hald, M. (2014). Surface water conditions and calcium carbonate preservation in the Fram Strait during marine isotope stage 2, 28.8–15.4 kyr. Paleoceanography. 29(1):1-12en_US
dc.identifier.cristinIDFRIDAID 1083842
dc.identifier.doi10.1002/2012PA002448
dc.identifier.issn0883-8305
dc.identifier.issn1944-9186
dc.identifier.urihttps://hdl.handle.net/10037/12134
dc.language.isoengen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.journalPaleoceanography
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/NORWAY/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450en_US
dc.titleSurface water conditions and calcium carbonate preservation in the Fram Strait during marine isotope stage 2, 28.8–15.4 kyren_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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