Association of Permian gabbro and granite in the Langshan, southern Central Asian Orogenic Belt: Age, origin, and tectonic implications
文献类型：期刊论文
| 作者 | Zheng, Rongguo2; Zhang, Jin2; Xiao, Wenjiao1,3,4 |
| 刊名 | LITHOS
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 348页码:17 |
| 关键词 | Central Asian Orogenic Belt Alxa A-type granite Slab roll-back |
| ISSN号 | 0024-4937 |
| DOI | 10.1016/j.lithos.2019.105174 |
| 英文摘要 | The Permian magmatism in the Alxa region provides critical geological evidence to constrain the geodynamic processes in the southern Central Asian Orogenic Belt. The Shouji batholith is located in the southern Langshan, eastern Alxa region, and contains monzogranites, K-feldspar granites, and gabbros. New zircon U-Pb age data show that the Shouji batholith formed at 282-268 Ma. The Shouji granites have high (Na2O + K2O), Nb, and Zr contents, and high 10000*Ga/Al, FeOT/(FeOT + MgO), Yb/Nb, and Yb/Ta ratios, similar to the values of A(2)-type granites. The Shouij granites exhibit enrichment in light rare earth elements (LREE) and large ion lithophile elements (LILE); depletion in Nb, Ti, and Sr; and enriched isotopic compositions. These Shouji granites were generated by partial melting of dehydrated tonalite-trondhjemite-granodiorite rocks of the Diebusige Complex in the lower crust. The Shouji gabbros are sodium-rich and low-K calc-alkaline rocks. They are enriched in LREE and LILE, depleted in high field strength elements, and have enriched isotopic compositions. These Shouji gabbros were generated by partial melting of a lithospheric mantle source metasomatized by melts derived from an ancient continental crust in an active continental margin. Roll-back of the Enger Us subducting slab accounts for generations of the Shouji A(2)-type granites and gabbros. The zircon U-Pb ages of Carboniferous-Permian magmatism show a younging trend toward the northwest in the southern Alxa region. Evidence from late Paleozoic magmatism and arc-derived sediments indicates that the southern Alxa switched from an active continental margin to an intra-oceanic arc during the early Carboniferous-Late Permian as a result of retreat of the subducting Enger Us slab. (C) 2019 Elsevier B.V. All rights reserved. |
| WOS关键词 | A-TYPE GRANITES ; ALXA BLOCK ; INNER-MONGOLIA ; CHINA IMPLICATIONS ; CALC-ALKALINE ; LOWER CRUST ; NW CHINA ; GEOCHRONOLOGY ; GEOCHEMISTRY ; ZIRCON |
| 资助项目 | National Key Research and Development Program of China from the Ministry of Science and Technology of China[2017YFC0601301] ; National Natural Science Foundation of China[41502214] ; National Natural Science Foundation of China[41572206] ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences[J1706] ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows[2015LH0049] ; China Postdoctoral Foundation[2016M590990] |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000500375700025 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Key Research and Development Program of China from the Ministry of Science and Technology of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; China Postdoctoral Foundation ; China Postdoctoral Foundation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95784]  |
| 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 | Zheng, Rongguo |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi 830011, Peoples R China 4.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 | Zheng, Rongguo,Zhang, Jin,Xiao, Wenjiao. Association of Permian gabbro and granite in the Langshan, southern Central Asian Orogenic Belt: Age, origin, and tectonic implications[J]. LITHOS,2019,348:17. |
| APA | Zheng, Rongguo,Zhang, Jin,&Xiao, Wenjiao.(2019).Association of Permian gabbro and granite in the Langshan, southern Central Asian Orogenic Belt: Age, origin, and tectonic implications.LITHOS,348,17. |
| MLA | Zheng, Rongguo,et al."Association of Permian gabbro and granite in the Langshan, southern Central Asian Orogenic Belt: Age, origin, and tectonic implications".LITHOS 348(2019):17. |
入库方式： OAI收割
来源：地质与地球物理研究所
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