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DOI	10.1016/j.epsl.2020.116401
	Unravelling Middle to Late Jurassic palaeoceanographic and palaeoclimatic signals in the Hebrides Basin using belemnite clumped isotope thermometry
	Vickers M.L.; Fernandez A.; Hesselbo S.P.; Price G.D.; Bernasconi S.M.; Lode S.; Ullmann C.V.; Thibault N.; Hougaard I.W.; Korte C.
发表日期	2020
ISSN	0012821X
卷号	546
英文摘要	Clumped isotope based temperature estimates from exceptionally well-preserved belemnites from Staffin Bay (Isle of Skye, Scotland) reveal that seawater temperatures throughout the Middle-Late Jurassic were significantly warmer than previously reconstructed by conventional oxygen isotope thermometry. We demonstrate here that this underestimation by oxygen isotope thermometry was likely due to a) using the incorrect calcite thermometry equation for belemnite temperature reconstructions and b) by incorrectly estimating the seawater δ18O (δ18Osw) for the Hebrides Basin. Our data suggests that the fractionation factor for oxygen isotopes in belemnites from seawater was closer to that of slow-growing abiogenic calcites than that of other marine calcifying organisms. Our clumped isotope temperatures are used to reconstruct δ18Osw trends across the Callovian–Kimmeridgian in the Hebrides Basin. The δ18Osw varied significantly in the Hebrides Basin throughout this interval, possibly as a result of changing currents through the Laurasian seaway. Trends in temperature and δ18Osw are compared to published palaeoceanographic studies to shed light on changing palaeoceanography in the Tethyan and Boreal realms throughout the Middle–Late Jurassic. © 2020 Elsevier B.V.
关键词	belemnites clumped isotopes Jurassic palaeoclimate palaeoceanography
英文关键词	Calcite; Oxygen; Seawater; Thermometers; Abiogenic; Clumped isotopes; Fractionation factors; Late Jurassic; Oxygen isotopes; Palaeoceanography; Seawater temperature; Temperature reconstruction; Isotopes; belemnite; Jurassic; oxygen isotope; paleoceanography; paleoclimate; paleotemperature; seawater; thermometry; Hebrides; Scotland; United Kingdom; Belemnoidea
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/202947
作者单位	University of Copenhagen, Faculty of Science, Geology Section, Øster Voldgade 10, Copenhagen K, DK-1350, Denmark; Bjerknes Centre for Climate Research, Department of Earth Science, University of Bergen, Allégaten 41, Bergen, N-5007, Norway; Camborne School of Mines, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE, United Kingdom; School of Geography, Earth and Environmental Sciences, Plymouth University, Drake Circus, Plymouth, PL4 8AA, United Kingdom; ETH Zürich, Geologisches Institut, Sonneggstrasse 5, Zürich, 8092, Switzerland; Geological Survey of Denmark and Greenland, Department of Petrology and Economic Geology, Øster Voldgade 10, Copenhagen K, DK-1350, Denmark
推荐引用方式 GB/T 7714	Vickers M.L.,Fernandez A.,Hesselbo S.P.,et al. Unravelling Middle to Late Jurassic palaeoceanographic and palaeoclimatic signals in the Hebrides Basin using belemnite clumped isotope thermometry[J],2020,546.
APA	Vickers M.L..,Fernandez A..,Hesselbo S.P..,Price G.D..,Bernasconi S.M..,...&Korte C..(2020).Unravelling Middle to Late Jurassic palaeoceanographic and palaeoclimatic signals in the Hebrides Basin using belemnite clumped isotope thermometry.Earth and Planetary Science Letters,546.
MLA	Vickers M.L.,et al."Unravelling Middle to Late Jurassic palaeoceanographic and palaeoclimatic signals in the Hebrides Basin using belemnite clumped isotope thermometry".Earth and Planetary Science Letters 546(2020).