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| DOI | 10.1016/j.earscirev.2020.103266 |
| The role of temperature in the initiation of the end-Triassic mass extinction | |
| Petryshyn V.A.; Greene S.E.; Farnsworth A.; Lunt D.J.; Kelley A.; Gammariello R.; Ibarra Y.; Bottjer D.J.; Tripati A.; Corsetti F.A. | |
| 发表日期 | 2020 |
| ISSN | 00128252 |
| 卷号 | 208 |
| 英文摘要 | The end-Triassic mass extinction coincided with the eruption of the Central Atlantic Magmatic Province, a large igneous province responsible for the massive atmospheric input of potentially climate-altering volatile compounds that is associated with a sharp rise in atmospheric CO2. The extinction mechanism is debated, but both short-term cooling (~10s of years) related to sulfur aerosols and longer-term warming (10,000 yrs) related to CO2 emissions—essentially opposite hypotheses—are suggested triggers. Until now, no temperature records spanning this crucial interval were available to provide a baseline or to differentiate between hypothesized mechanisms. Here, we use clumped-isotope paleothermometry of shallow marine microbialites coupled with climate modeling to reconstruct ocean temperature at the extinction horizon. We find mild to warm ocean temperatures during the extinction event and evidence for repeated temperature swings of ~16 °C, which we interpret as a signature of strong seasonality. These results constitute the oldest non-biomineralized marine seasonal temperature record. We resolve no apparent evidence for short-term cooling or initial warming across the 1-80kyr of the extinction event our record captures, implying that the initial onset of the biodiversity crisis may necessitate another mechanism. © 2020 Elsevier B.V. |
| 关键词 | Climate modelClumped isotopesEnd-Triassic extinctionMicrobialitePaleoclimateTriassic-Jurassic boundary |
| 英文关键词 | aerosol; climate change; large igneous province; mass extinction; seasonal variation; sulfur; temperature effect; Triassic |
| 语种 | 英语 |
| 来源期刊 | Earth Science Reviews
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/203846 |
| 作者单位 | Department of Earth, Planetary and Space Sciences, Institute of the Environment and Sustainability, Center for Diverse Leadership in Science, University of California Los Angeles, Los Angeles, CA 90095, United States; European Institute of Marine Sciences (IUEM), Université de Bretagne Occidentale, UMR 6538/6539, Rue Dumont D'Urville, and IFREMER, Plouzané, France; Environmental Studies Program, University of Southern California, Los Angeles, CA 90089, United States; School of Geography, Earth, and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, United Kingdom; BRIDGE, School of Geographical Sciences, University of Bristol, Bristol, BS8 1SS, United Kingdom; Cabot Institute, University of Bristol, Bristol, United Kingdom; San Francisco State University, Department of Earth and Climate Sciences, San Francisco, CA 94132, United States; Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, United States; Department of Atmospheric and Oceanic Science... |
| 推荐引用方式 GB/T 7714 | Petryshyn V.A.,Greene S.E.,Farnsworth A.,et al. The role of temperature in the initiation of the end-Triassic mass extinction[J],2020,208. |
| APA | Petryshyn V.A..,Greene S.E..,Farnsworth A..,Lunt D.J..,Kelley A..,...&Corsetti F.A..(2020).The role of temperature in the initiation of the end-Triassic mass extinction.Earth Science Reviews,208. |
| MLA | Petryshyn V.A.,et al."The role of temperature in the initiation of the end-Triassic mass extinction".Earth Science Reviews 208(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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