Paleozoic Sanweishan arc in the northern Dunhuang region, NW China: The Dunhuang block is a Phanerozoic orogen, not a Precambrian block
文献类型：期刊论文
| 作者 | Shi, Mengyan1; Hou, Quanlin1,2; Wu, Chunming1,2; Yan, Quanren1,2; Wang, Hao Y. C.2; Cheng, Nannan1; Zhang, Qian W. L.1; Li, Zhen M. G.1 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 194页码:15 |
| ISSN号 | 1367-9120 |
| 关键词 | Sanweishan arc Dunhuang Orogen Volcaniclastic rock Geochronology |
| DOI | 10.1016/j.jseaes.2019.103954 |
| 英文摘要 | The Dunhuang region is located to the south of the Central Asian Orogenic Belt and connecting the Tarim Craton westerly and North China Craton easterly, respectively. It is an important position for understanding the geodynamics and tectonic framework of Central Asia. However, the issue about whether it is a Phanerozoic orogen or a Precambrian block is still controversial. Magmatic arcs are the most prominent and laterally persistent structural elements of orogenic belts and used to reconstruct now-disrupted orogenic belts. This paper concerns the petrogenesis and tectonic setting of andesitic-dacitic-rhyolitic volcaniclastic rocks and dacitic porphyries in the Sanweishan area, northern Dunhuang region. Volcaniclastic rocks overlie the metasedimentary rocks by fault and dacitic porphyries intrude into the metasedimentary rocks. The calc-alkaline signature and relative enrichment of large-ion lithophile elements of volcaniclastic rocks and dacitic porphyries seemingly favor a subduction setting. Zircon U-Pb dating results reveal the deposition at 424-414 Ma for volcaniclastic rocks and emplacement at ca. 364 Ma for dacitic porphyries. The coeval granitoid plutons in the Sanweishan area show arc geochemical signature and are originated from partial melting of the subducted sediments based on the available data. Paleozoic volcanic-subvolcanic rocks and plutons in this area probably represent a magmatic arc developed on the accretionary complex, resembling the arc magmatic rocks formed in the Nankai complex, SW Japanese Island arc. Our results provide constraints on the existence of the Paleozoic magmatic arc in the northern Dunhuang region and suggest the so-called "Dunhuang block" is virtually a Phanerozoic orogen rather than a Precambrian block. |
| WOS关键词 | ZIRCON U-PB ; PALEOPROTEROZOIC CRUSTAL EVOLUTION ; HF ISOTOPIC CHARACTERISTICS ; NORTHEASTERN TARIM CRATON ; TECTONIC EVOLUTION ; METAMORPHIC EVOLUTION ; CONTINENTAL-CRUST ; VOLCANIC-ROCKS ; GANSU PROVINCE ; GEOCHEMICAL CHARACTERISTICS |
| 资助项目 | National key research and development plan-Major special project for exploration and mining of deep earth resources[2016YFC0600401] ; National Natural Science Foundation of China[41730215] ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences[K201605] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000538820400021 |
| 资助机构 | National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National key research and development plan-Major special project for exploration and mining of deep earth resources ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Open Foundation of State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/96902]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Hou, Quanlin |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Mengyan,Hou, Quanlin,Wu, Chunming,et al. Paleozoic Sanweishan arc in the northern Dunhuang region, NW China: The Dunhuang block is a Phanerozoic orogen, not a Precambrian block[J]. JOURNAL OF ASIAN EARTH SCIENCES,2020,194:15. |
| APA | Shi, Mengyan.,Hou, Quanlin.,Wu, Chunming.,Yan, Quanren.,Wang, Hao Y. C..,...&Li, Zhen M. G..(2020).Paleozoic Sanweishan arc in the northern Dunhuang region, NW China: The Dunhuang block is a Phanerozoic orogen, not a Precambrian block.JOURNAL OF ASIAN EARTH SCIENCES,194,15. |
| MLA | Shi, Mengyan,et al."Paleozoic Sanweishan arc in the northern Dunhuang region, NW China: The Dunhuang block is a Phanerozoic orogen, not a Precambrian block".JOURNAL OF ASIAN EARTH SCIENCES 194(2020):15. |
入库方式： OAI收割
来源：地质与地球物理研究所
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