气候变化领域集成服务门户(CCPortal): Abrupt warming in the latest Permian detected using high-resolution in situ oxygen isotopes of conodont apatite from Abadeh; central Iran

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DOI	10.1016/j.palaeo.2020.109973
	Abrupt warming in the latest Permian detected using high-resolution in situ oxygen isotopes of conodont apatite from Abadeh; central Iran
	Chen J.; Shen S.-Z.; Zhang Y.-C.; Angiolini L.; Gorgij M.N.; Crippa G.; Wang W.; Zhang H.; Yuan D.-X.; Li X.-H.; Xu Y.-G.
发表日期	2020
ISSN	0031-0182
卷号	560
英文摘要	Climate warming, probably as a result of massive degassing of greenhouse gases from the Siberian Traps magmatism, has often been acclaimed as a major cause of the end-Permian mass extinction. Indeed, several studies have documented a sudden rise in seawater temperatures during the latest Permian-earliest Triassic, as evidenced by oxygen isotopic records measured on conodont apatite. However, whether such a rapid increase in seawater temperatures occurred before, during, or after the mass extinction remains controversial. Moreover, the pattern of this rise in seawater temperatures and its timing relative to the latest Permian-earliest Triassic carbon cycle disruption, mass extinction, as well as the Siberian Traps magmatism still need to be rigorously examined in various regions. In this study, we present high-resolution oxygen isotopic records of conodont apatite (δ18Oapatite) from the Upper Permian-lowermost Triassic interval at the Abadeh section, central Iran that are analyzed with in situ secondary ion mass spectrometry (SIMS) method. The δ18Oapatite results from Abadeh demonstrate a clear pattern consisting of three phases: (1) From the lower Wuchiapingian Clarkina dukouensis Zone to the end-Permian mass extinction horizon, δ18Oapatite values are relatively stable, fluctuating in the range of 18.28-20.15‰ with an average of 19.44‰. (2) δ18Oapatite value remains high as 19.26‰ at the mass extinction horizon. Above this horizon, a sudden decrease occurs in the Clarkina hauschkei Zone and reaches a low value of 17.05‰ close to the Permian-Triassic boundary. (3) In the lowermost Triassic, δ18Oapatite values maintain a low baseline in the range of 16.92-17.39‰ with an average of 17.11‰. Overall, the most dramatic change in δ18Oapatite values (i.e., a decrease of ~2‰), converting into an abrupt warming of ~10 °C, occurred above the mass extinction horizon and below the Permian-Triassic boundary at Abadeh. The Abadeh δ18Oapatite record is consistent with previous results documented in South China, Iran, and Armenia in terms of the timing and magnitude of a substantial warming, and therefore represents a global signature. If applying the high-precision temporal framework established in the well-dated Meishan GSSP section to Abadeh, the abrupt warming of ~10 °C took only a maximum duration of ~37 kyr (thousand years). By projecting the carbon cycle change, temperature rise, mass extinction at the Abadeh and Meishan sections, and the temporal evolution of the Siberian Traps magmatism onto a unified timescale, the temporal correlation strongly suggests that the switch from dominantly extrusive eruptions to widespread sill intrusions is probably the most annihilating phase of the Siberian Traps magmatism, and is temporally consistent with the end-Permian mass extinction. © 2020 Elsevier B.V.
英文关键词	Climate warming; End-Permian mass extinction; Intrusive magmatism; Permian-Triassic boundary; Siberian Traps; SIMS
语种	英语
scopus关键词	apatite; carbon cycle; conodont; degassing; magmatism; mass extinction; mass spectrometry; oxygen isotope; Permian-Triassic boundary; temporal evolution; volcanic eruption; Abadeh; China; Fars; Iran; Meishan; Zhejiang; Clarkina; Clarkina dukouensis
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150303
作者单位	State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; State Key Laboratory for Mineral Deposits Research and School of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, 210008, China; Dipartimento di Scienze della Terra ‘A. Desio’, Università degli Studi di Milano, Via Mangiagalli 34, Milano, 20133, Italy; Department of Geology, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, Iran; Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China
推荐引用方式 GB/T 7714	Chen J.,Shen S.-Z.,Zhang Y.-C.,et al. Abrupt warming in the latest Permian detected using high-resolution in situ oxygen isotopes of conodont apatite from Abadeh; central Iran[J],2020,560.
APA	Chen J..,Shen S.-Z..,Zhang Y.-C..,Angiolini L..,Gorgij M.N..,...&Xu Y.-G..(2020).Abrupt warming in the latest Permian detected using high-resolution in situ oxygen isotopes of conodont apatite from Abadeh; central Iran.Palaeogeography, Palaeoclimatology, Palaeoecology,560.
MLA	Chen J.,et al."Abrupt warming in the latest Permian detected using high-resolution in situ oxygen isotopes of conodont apatite from Abadeh; central Iran".Palaeogeography, Palaeoclimatology, Palaeoecology 560(2020).