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DOI | 10.1029/2020GL087484 |
Arc-Type Magmatism Due to Continental-Edge Plowing Through Ancient Subduction-Enriched Mantle | |
van Hinsbergen, Douwe J. J.1; Spakman, Wim1; de Boorder, Hugo1; Van Dongen, Michiel2,3; Jowitt, Simon M.4; Mason, Paul R. D.1 | |
2020-05-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; Australia; USA |
英文摘要 | The puzzling <7 Ma old "postsubduction" arc magmatism of New Guinea contains geochemical subduction-type signatures yet did not occur above an active subduction zone. Here we show that these arc magmas formed at the North Australian continental lithospheric edge when it plowed northward through mantle above the detached Arafura slab remnant. This mantle preserved its subduction signature and the edge plowing process generated new melts that ascended via an active transform fault. Arafura slab subduction occurred at an intraoceanic subduction zone that ended similar to 30-25 Ma ago, when the Australian continental edge was still similar to 1,000 km to the south. Our absolute plate tectonic reconstruction of continental-edge plowing suggests that ancient mantle wedges remain semistationary in the upper mantle and can preserve their geochemical signature for tens of Ma, explaining previously enigmatic "postsubduction" arc magmatism. |
英文关键词 | subduction tomography absolute plate motion magmatism plate reconstruction |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000536639500021 |
WOS关键词 | PORPHYRY CU-AU ; NEW-GUINEA ; KINEMATIC RECONSTRUCTION ; TECTONIC EVOLUTION ; BAJA-CALIFORNIA ; DEPOSITS ; SLAB ; MINERALIZATION ; PAPUA ; ROCKS |
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/279906 |
专题 | 气候变化 |
作者单位 | 1.Univ Utrecht, Dept Earth Sci, Utrecht, Netherlands; 2.Monash Univ, Sch Earth Atmosphere & Environm, Clayton, Vic 3800, Australia; 3.Minist Infrastruct & Water Management, NL-2500 EX The Hague, Netherlands; 4.Univ Nevada, Dept Geosci, Las Vegas, NV 89154 USA |
推荐引用方式 GB/T 7714 | van Hinsbergen, Douwe J. J.,Spakman, Wim,de Boorder, Hugo,et al. Arc-Type Magmatism Due to Continental-Edge Plowing Through Ancient Subduction-Enriched Mantle[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(9). |
APA | van Hinsbergen, Douwe J. J.,Spakman, Wim,de Boorder, Hugo,Van Dongen, Michiel,Jowitt, Simon M.,&Mason, Paul R. D..(2020).Arc-Type Magmatism Due to Continental-Edge Plowing Through Ancient Subduction-Enriched Mantle.GEOPHYSICAL RESEARCH LETTERS,47(9). |
MLA | van Hinsbergen, Douwe J. J.,et al."Arc-Type Magmatism Due to Continental-Edge Plowing Through Ancient Subduction-Enriched Mantle".GEOPHYSICAL RESEARCH LETTERS 47.9(2020). |
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