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DOI | 10.1038/s41561-017-0011-6 |
Evidence for a spike in mantle carbon outgassing during the Ediacaran period | |
Paulsen, Timothy1; Deering, Chad2; Sliwinski, Jakub3; Bachmann, Olivier3; Guillong, Marcel3 | |
2017-12-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Switzerland |
英文摘要 | Long-term cycles in Earth's climate are thought to be primarily controlled by changes in atmospheric CO2 concentrations. Changes in carbon emissions from volcanic activity can create an imbalance in the carbon cycle. Large-scale changes in volcanic activity have been inferred from proxies such as the age abundance of detrital zircons, but the magnitude of carbon emissions depends on the style of volcanism as well as the amount. Here we analyse U-Pb age and trace element data of detrital zircons from Antarctica and compare the results with the global rock record. We identify a spike in CO2-rich carbonatite and alkaline magmatism during the Ediacaran period. Before the Ediacaran, secular cooling of the mantle and the advent of cooler subduction regimes promoted the sequestration of carbon derived from decarbonation of subducting oceanic slabs in the mantle. We infer that subsequent magmatism led to the extensive release of carbon that may at least in part be recorded in the Shuram-Wonoka carbon isotope excursion. We therefore suggest that this pulse of alkaline volcanism reflects a profound reorganization of the Neoproterozoic deep and surface carbon cycles and promoted planetary warming before the Cambrian radiation. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416858000015 |
WOS关键词 | U-TH-PB ; TRACE-ELEMENT ; ISOTOPE EXCURSION ; IGNEOUS ZIRCON ; LU-HF ; ALKALINE ; GEOCHRONOLOGY ; SUBDUCTION ; MOUNTAINS ; EVOLUTION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35161 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Wisconsin, Dept Geol, Oshkosh, WI 54901 USA; 2.Michigan Technol Univ, Dept Geol & Min Engn & Sci, Houghton, MI 49931 USA; 3.ETH, Dept Earth Sci, Inst Geochem & Petr, Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Paulsen, Timothy,Deering, Chad,Sliwinski, Jakub,et al. Evidence for a spike in mantle carbon outgassing during the Ediacaran period[J]. NATURE GEOSCIENCE,2017,10(12). |
APA | Paulsen, Timothy,Deering, Chad,Sliwinski, Jakub,Bachmann, Olivier,&Guillong, Marcel.(2017).Evidence for a spike in mantle carbon outgassing during the Ediacaran period.NATURE GEOSCIENCE,10(12). |
MLA | Paulsen, Timothy,et al."Evidence for a spike in mantle carbon outgassing during the Ediacaran period".NATURE GEOSCIENCE 10.12(2017). |
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