A rapid onset of ocean acidification associated with the end-Permian mass extinction
文献类型：期刊论文
| 作者 | Li, Rucao1; Wu, Nanping9; Shen, Shu-Zhong7,8; Wang, Xiao-Lei7,8; Chen, Huayong6 ; Algeo, Thomas J.3,4,5; Zhang, Hua2; Zhang, Feifei7,8
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| 刊名 | GLOBAL AND PLANETARY CHANGE
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| 出版日期 | 2023-06-01 |
| 卷号 | 225页码:9 |
| 关键词 | Permian-Triassic Marcasite Sulfur isotope SIMS Meishan Penglaitan |
| ISSN号 | 0921-8181 |
| DOI | 10.1016/j.gloplacha.2023.104130 |
| 英文摘要 | The end-Permian mass extinction (EPME) resulted in the most severe biodiversity loss in Earth's history, the cause(s) of which are still heavily debated. Recent studies have emphasized the role of ocean acidification on marine ecosystem collapse during the EPME, but the timing of the onset of ocean acidification and its relationship to contemporaneous large igneous province (LIP) magmatism remain ambiguous. Here, we present the first in-situ secondary ion mass spectrometry (SIMS) sulfur isotope data for pyrite and marcasite from the Meishan section, which hosts the Global Stratotype Section and Point (GSSP) of the Permian-Triassic boundary (PTB). We found a sharp increase in marcasite abundance and a concurrent decrease in marcasite delta 34S to highly negative values (ca. -50 parts per thousand) within the EPME interval (i.e., Beds 25-28). Combined with the morphology of marcasite, we infer that the formation of 34S-depleted anhedral marcasite occurred in a sulfate-unlimited porewater environment that was likely well connected to the overlying water column. A similar negative shift in delta 34Smarcasite was observed in the EPME interval of the Penglaitan section. Given that marcasite forms only in acidic conditions and low delta 34Smarcasite values suggest an open porewater system, the sharp negative shift in the delta 34S of syndepositional marcasite records a sudden acidification of Late Permian seawater. This conclusion is broadly consistent with previously reported boron isotope data of brachiopod-shell which witnessed a negative shift at the same stratigraphic horizons. While the ocean acidification event started after the starting point (base of Bed 25) of EPME, it occurred broadly within the extinction interval (Beds 25 to 28), supporting the hypothesis that ocean acidification may have been a major environmental factor contributing to the end-Permian marine ecosystem collapse. |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000990811600001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74255]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Chen, Huayong; Zhang, Feifei |
| 作者单位 | 1.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 3.Univ Cincinnati, Dept Geol, Cincinnati, OH 42221 USA 4.China Univ Geosci, Sch Earth Sci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China 5.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510604, Peoples R China 7.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, 163 Xianlin Ave, Nanjing 210023, Peoples R China 8.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, 163 Xianlin Ave, Nanjing 210023, Peoples R China 9.Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Rucao,Wu, Nanping,Shen, Shu-Zhong,et al. A rapid onset of ocean acidification associated with the end-Permian mass extinction[J]. GLOBAL AND PLANETARY CHANGE,2023,225:9. |
| APA | Li, Rucao.,Wu, Nanping.,Shen, Shu-Zhong.,Wang, Xiao-Lei.,Chen, Huayong.,...&Zhang, Feifei.(2023).A rapid onset of ocean acidification associated with the end-Permian mass extinction.GLOBAL AND PLANETARY CHANGE,225,9. |
| MLA | Li, Rucao,et al."A rapid onset of ocean acidification associated with the end-Permian mass extinction".GLOBAL AND PLANETARY CHANGE 225(2023):9. |
入库方式： OAI收割
来源：广州地球化学研究所
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