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dc.contributor.authorCosta, Kassandra M.
dc.contributor.authorHayes, Christopher T.
dc.contributor.authorAnderson, Robert F.
dc.contributor.authorPavia, Frank J.
dc.contributor.authorBausch, Alexandra
dc.contributor.authorDeng, Feifei
dc.contributor.authorDutay, Jean-Claude
dc.contributor.authorGeibert, Walter
dc.contributor.authorHeinze, Christoph
dc.contributor.authorHenderson, Gideon M.
dc.contributor.authorHillaire-Marcel, Claude
dc.contributor.authorHoffmann, Sharon
dc.contributor.authorJaccard, Samuel L.
dc.contributor.authorJacobel, Allison W.
dc.contributor.authorKienast, Stephanie S.
dc.contributor.authorKipp, Lauren
dc.contributor.authorLerner, Paul
dc.contributor.authorLippold, Jörg
dc.contributor.authorLund, David
dc.contributor.authorMarcantonio, Franco
dc.contributor.authorMcGee, David
dc.contributor.authorMcManus, Jerry F.
dc.contributor.authorMekik, Figen
dc.contributor.authorMiddleton, Jennifer L.
dc.contributor.authorMissiaen, Lise
dc.contributor.authorNot, Christelle
dc.contributor.authorPichat, Sylvain
dc.contributor.authorRobinson, Laura F.
dc.contributor.authorRowland, George H.
dc.contributor.authorRoy‐Barman, Matthieu
dc.contributor.authorTagliabue, Alessandro
dc.contributor.authorTorfstein, Adi
dc.contributor.authorWinckler, Gisela
dc.contributor.authorZhou, Yuxin
dc.description.abstract230Th normalization is a valuable paleoceanographic tool for reconstructing high‐resolution sediment fluxes during the late Pleistocene (last ~500,000 years). As its application has expanded to ever more diverse marine environments, the nuances of 230Th systematics, with regard to particle type, particle size, lateral advective/diffusive redistribution, and other processes, have emerged. We synthesized over 1000 sedimentary records of 230Th from across the global ocean at two time slices, the late Holocene (0–5,000 years ago, or 0–5 ka) and the Last Glacial Maximum (18.5–23.5 ka), and investigated the spatial structure of 230Th‐normalized mass fluxes. On a global scale, sedimentary mass fluxes were significantly higher during the Last Glacial Maximum (1.79–2.17 g/cm2kyr, 95% confidence) relative to the Holocene (1.48–1.68 g/cm2kyr, 95% confidence). We then examined the potential confounding influences of boundary scavenging, nepheloid layers, hydrothermal scavenging, size‐dependent sediment fractionation, and carbonate dissolution on the efficacy of 230Th as a constant flux proxy. Anomalous 230Th behavior is sometimes observed proximal to hydrothermal ridges and in continental margins where high particle fluxes and steep continental slopes can lead to the combined effects of boundary scavenging and nepheloid interference. Notwithstanding these limitations, we found that 230Th normalization is a robust tool for determining sediment mass accumulation rates in the majority of pelagic marine settings (>1,000 m water depth).en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.title230Th Normalization: New Insights on an Essential Tool for Quantifying Sedimentary Fluxes in the Modern and Quaternary Oceanen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.rights.holderCopyright The authorsen_US
dc.source.journalPaleoceanography and Paleoclimatologyen_US

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Navngivelse 4.0 Internasjonal
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