DOI: 10.1016/j.epsl.2020.116245
论文题名: A high-resolution Middle to Late Permian paleotemperature curve reconstructed using oxygen isotopes of well-preserved brachiopod shells
作者: Wang W.-Q. ; Garbelli C. ; Zhang F.-F. ; Zheng Q.-F. ; Zhang Y.-C. ; Yuan D.-X. ; Shi Y.-K. ; Chen B. ; Shen S.-Z.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 540 语种: 英语
中文关键词: brachiopods
; climatic warming
; conodonts
; mass extinctions
; oxygen isotopes
; paleotemperature
英文关键词: Atmospheric temperature
; Calcite
; Isotopes
; Oceanography
; Oxygen
; Stratigraphy
; Submarine geophysics
; Surface properties
; brachiopods
; Climatic warming
; conodonts
; Mass extinction
; Oxygen isotopes
; Paleotemperatures
; Surface waters
; brachiopod
; climate change
; conodont
; mass extinction
; oxygen isotope
; paleotemperature
; Permian
; reconstruction
; China
; Brachiopoda
英文摘要: Climatic warming has been widely cited as a driver for many mass extinction events in Earth history, including the middle-late Permian Guadalupian-Lopingian boundary (GLB) mass extinction and end-Permian mass extinction (EPME) investigated in this study. However, the role of warming in driving the EPME event is under debate because current paleotemperature studies indicate the rapid increase in sea-surface temperature postdate the onset of the EPME event, and a reliable paleotemperature record across the GLB event is lacking. Here, we present a high-resolution and successive δ18O record using low-Mg calcite shells of brachiopods (bLMCs) from a single stratigraphic section in central China to reconstruct paleotemperature changes from the middle to the latest Permian. After a rigorous screening for diagenesis, our data show a ∼1.0‰ decrease in δ18Ocalcite (and thus climatic warming) during the middle Capitanian, followed by a gradual ∼2.0‰ increase (climatic cooling) during the late Wuchiapingian. From the latest Wuchiapingian to the early Changhsingian, δ18O decreased gradually and reached the lowest values of -4.0‰ (and thus rapid climatic warming) immediately before the Permian-Triassic boundary. The two warming events are coeval with the onset of the Emeishan Large Igneous Province and the Siberian Traps Large Igneous Province, respectively, suggesting the two volcanic events are the plausible drivers of these climatic warming events. A close comparison of paleontological and geochemical records indicates that the warming events occurred predate the GLB and EPME events, this is in contrast with conodont δ18Oapatite data which document the rapid climatic warming lagged the onset of the extinction event. The comparison between δ18O of bLMCs and δ18O of conodonts from the same section shows that the long-term trends are similar, but, at higher temporal resolution, discrepancies are present, entailing further investigation in the near future. Our study confirms that δ18O of the brachiopod shells underwent important changes during the end of Paleozoic, highlighting that sea surface temperature is a key factor to understand the biosphere history, since it changes simultaneously with the biological crises, and that bLMCs are invaluable archive for tracking physical and chemical conditions of past oceans. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165337
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory for Mineral Deposits Research, 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, Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing, 210008, China; Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, 100101, China
Recommended Citation:
Wang W.-Q.,Garbelli C.,Zhang F.-F.,et al. A high-resolution Middle to Late Permian paleotemperature curve reconstructed using oxygen isotopes of well-preserved brachiopod shells[J]. Earth and Planetary Science Letters,2020-01-01,540