Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aan8086 |
Titanium isotopic evidence for felsic crust and plate tectonics 3.5 billion years ago | |
Greber, Nicolas D.1,2,6; Dauphas, Nicolas1,2; Bekker, Andrey3,4; Ptacek, Matous P.1,2; Bindeman, Ilya N.5; Hofmann, Axel4 | |
2017-09-22 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 357期号:6357页码:1271-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; South Africa; Switzerland |
英文摘要 | Earth exhibits a dichotomy in elevation and chemical composition between the continents and ocean floor. Reconstructing when this dichotomy arose is important for understanding when plate tectonics started and how the supply of nutrients to the oceans changed through time. We measured the titanium isotopic composition of shales to constrain the chemical composition of the continental crust exposed to weathering and found that shales of all ages have a uniform isotopic composition. This can only be explained if the emerged crust was predominantly felsic (silica-rich) since 3.5 billion years ago, requiring an early initiation of plate tectonics. We also observed a change in the abundance of biologically important nutrients phosphorus and nickel across the Archean-Proterozoic boundary, which might have helped trigger the rise in atmospheric oxygen. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411337700040 |
WOS关键词 | GREAT OXIDATION EVENT ; CONTINENTAL-CRUST ; EVOLUTION ; ICELAND ; ZIRCON ; SHALES ; ANALOG ; EARTH ; RECORD ; GROWTH |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/196917 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Chicago, Origins Lab, Dept Geophys Sci, 5734 South Ellis Ave, Chicago, IL 60615 USA; 2.Univ Chicago, Enrico Fermi Inst, 5734 South Ellis Ave, Chicago, IL 60615 USA; 3.Univ Calif Riverside, Dept Earth Sci, Riverside, CA 92521 USA; 4.Univ Johannesburg, Dept Geol, POB 524,Auckland Pk, ZA-2006 Johannesburg, South Africa; 5.Univ Oregon, Dept Geol Sci, Eugene, OR 97403 USA; 6.Univ Geneva, Dept Earth Sci, Rue Maraichers 13, CH-1205 Geneva, Switzerland |
推荐引用方式 GB/T 7714 | Greber, Nicolas D.,Dauphas, Nicolas,Bekker, Andrey,et al. Titanium isotopic evidence for felsic crust and plate tectonics 3.5 billion years ago[J]. SCIENCE,2017,357(6357):1271-+. |
APA | Greber, Nicolas D.,Dauphas, Nicolas,Bekker, Andrey,Ptacek, Matous P.,Bindeman, Ilya N.,&Hofmann, Axel.(2017).Titanium isotopic evidence for felsic crust and plate tectonics 3.5 billion years ago.SCIENCE,357(6357),1271-+. |
MLA | Greber, Nicolas D.,et al."Titanium isotopic evidence for felsic crust and plate tectonics 3.5 billion years ago".SCIENCE 357.6357(2017):1271-+. |
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