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DOI | 10.1038/ncomms15531 |
Nb/Ta systematics in arc magma differentiation and the role of arclogites in continent formation | |
Tang, Ming1; Lee, Cin-Ty A.1; Chen, Kang2; Erdman, Monica1; Costin, Gelu1; Jiang, Hehe1 | |
2019-01-16 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2019 |
卷号 | 10 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | The surfaces of rocky planets are mostly covered by basaltic crust, but Earth is unique in that it also has extensive regions of felsic crust, manifested in the form of continents. Exactly how felsic crust forms when basaltic magmas are the dominant products of melting the mantles of rocky planets is unclear. A fundamental part of the debate is centered on the low Nb/Ta of Earth's continental crust (11-13) compared to basalts (15-16). Here, we show that during arc magma differentiation, the extent of Nb/Ta fractionation varies with crustal thickness with the lowest Nb/Ta seen in continental arc magmas. Deep arc cumulates (arclogites) are found to have high Nb/Ta (average -19) due to the presence of high Nb/Ta magmatic rutiles. We show that the crustal thickness control of Nb/Ta can be explained by rutile saturation being favored at higher pressures. Deep-seated magmatic differentiation, such as in continental arcs and other magmatic orogens, is thus necessary for making continents. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000455761000009 |
WOS关键词 | RUTILE SATURATION ; HIGH-PRESSURE ; GARNET PYROXENITE ; SIERRA-NEVADA ; EXPERIMENTAL CONSTRAINTS ; CRUSTAL THICKNESS ; TRACE-ELEMENTS ; CALC-ALKALINE ; OCEAN ISLAND ; MANTLE |
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/203336 |
专题 | 资源环境科学 |
作者单位 | 1.Rice Univ, Dept Earth Environm & Planetary Sci, Houston, TX 77005 USA; 2.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China |
推荐引用方式 GB/T 7714 | Tang, Ming,Lee, Cin-Ty A.,Chen, Kang,et al. Nb/Ta systematics in arc magma differentiation and the role of arclogites in continent formation[J]. NATURE COMMUNICATIONS,2019,10. |
APA | Tang, Ming,Lee, Cin-Ty A.,Chen, Kang,Erdman, Monica,Costin, Gelu,&Jiang, Hehe.(2019).Nb/Ta systematics in arc magma differentiation and the role of arclogites in continent formation.NATURE COMMUNICATIONS,10. |
MLA | Tang, Ming,et al."Nb/Ta systematics in arc magma differentiation and the role of arclogites in continent formation".NATURE COMMUNICATIONS 10(2019). |
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