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DOI	10.1016/j.epsl.2021.116814
	Isotopic constraints on ocean redox at the end of the Eocene
	Dickson A.J.; Bagard M.-L.; Katchinoff J.A.R.; Davies M.; Poulton S.W.; Cohen A.S.
发表日期	2021
ISSN	0012821X
卷号	562
英文摘要	A multi-million-year decrease in global temperatures during the Eocene was accompanied by large reorganisations to ocean circulation, ocean chemistry and biological productivity. These changes culminated in the rapid growth of grounded ice on Antarctica during the Eocene–Oligocene climate transition (EOT), ∼34 million years ago. However, while it is likely that environmental perturbations of this magnitude altered the oceanic oxygen inventory, the sign and magnitude of the response is poorly constrained. We show that euxinic, hydrographically restricted conditions developed in the Austrian Molasse Basin during the EOT. The isotopic compositions of molybdenum and uranium captured by sediments accumulating in the Molasse Basin at this time reveal that the global extent of sulfidic conditions during the EOT was not appreciably different to that of the Early Eocene greenhouse world. Our results suggest that the early Cenozoic oceans were buffered against extreme long-term changes in oxygenation. © 2021 The Author(s)
关键词	Eocene-Oligocene transition molybdenum isotopes Para-Tethys redox uranium isotopes
英文关键词	Molybdenum; Oceanography; Uranium; Climate transition; Condition; Eocene-oligocene transition; Global temperatures; Molasse basin; Molybdenum isotopes; Oligocene; Para-tethys; Redox; Uranium isotopes; Isotopes; Eocene-Oligocene boundary; euxinic environment; isotopic composition; molybdenum; oxygenation; paleoceanography; paleoclimate; redox conditions; Molasse Basin; Tethys
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203072
作者单位	Department of Earth Sciences, Royal Holloway University of London, Surrey, Egham, TW20 0EX, United Kingdom; Department of Environment, Earth and Ecosystems, The Open University, Milton Keynes, MK7 6AA, United Kingdom; Department of Earth Sciences, University of Cambridge, Downing Street, Cambridgeshire, Cambridge, CB2 3EQ, United Kingdom; Department of Geology and Geophysics, Yale University, New Haven, CT 06520-8109, United States; School of Geography, Earth and Environmental Sciences, University of Plymouth, Devon, Plymouth, PL4 8AA, United Kingdom; School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom
推荐引用方式 GB/T 7714	Dickson A.J.,Bagard M.-L.,Katchinoff J.A.R.,et al. Isotopic constraints on ocean redox at the end of the Eocene[J],2021,562.
APA	Dickson A.J.,Bagard M.-L.,Katchinoff J.A.R.,Davies M.,Poulton S.W.,&Cohen A.S..(2021).Isotopic constraints on ocean redox at the end of the Eocene.Earth and Planetary Science Letters,562.
MLA	Dickson A.J.,et al."Isotopic constraints on ocean redox at the end of the Eocene".Earth and Planetary Science Letters 562(2021).