Paleozoic tectonic of evolution of Tianshan orogen: In the view from a structure analysis of the HP-UHP metamorphic belt of SW Chinese Tianshan
文献类型：期刊论文
| 作者 | Lin Wei1; Li Le1; Zhang ZhongPei2; Shi YongHong3; Li QiuLi1; Xue ZhenHua1; Wang Fei1; Wu Lin1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2015-08-01 |
| 卷号 | 31期号:8页码:2115-2128 |
| 关键词 | SW Chinese Tianshan UHP metamorphic belt Structural analysis Polyphase deformation Tectonic evolution |
| 文献子类 | Article |
| 英文摘要 | The south-western Chinese Tianshan orogenic belt is famous for its UHP metamorphism. On the basis of the analysis including bulk geometry of structures and kinematic analyses, based on field and laboratory studies along the Akyazi, Keburt and Muzaert rivers, three tectonic units have been recognized, namely 1) a Southern Unit composed of weakly metamorphosed sedimentary rocks of Silurian age; 2) a Central HP/LT Unit composed of blueschist-eclogite-facies metamorphic rocks derived from basalts, pelites and volcaniclastic rocks; 3) a Northern Unit, which consists of a Carboniferous magmatic arc developed upon an amphibolite- facies metamorphic continental basement are established. Our structural analysis documents multi-phase tectonic events. The main event (E-1) is reflected by top-to-the northwest ductile shearing (D-1), coeval with HP/LT metamorphism with the age around 320Ma. This is followed by north-directed thrusting (D-2) of the Southern Unit over the Central Unit, coeval with retrogression of the high-pressure rocks (E-2). A top-to-the-S (SE) thrust event (D-3) overprints the earliest events and is observed in the Northern and Central Units (E-3). Lastly, Permian dextral ductile-brittle wrenching (1214) overprints the older flat-lying fabrics (E-4). E-4 is conspicuous along the Nalati Fault that separates the Northern Unit from the Central Unit. These multi-phase tectonic events could be observed along the entire Tianshan belt. Finally, the structural and geochronological data are integrated into a geodynamic model of the Chinese Tianshan that emphasizes south-directed subduction of the Junggar plate, North Tianshan-Yili-Kazakhstan plate and Central Tianshan microcontinent during the Early to Middle Paleozoic. |
| WOS关键词 | P-T PATH ; PRESSURE/LOW-TEMPERATURE ROCKS ; NW-CHINA ; WESTERN TIANSHAN ; CENTRAL-ASIA ; TIEN-SHAN ; SOUTHWESTERN TIANSHAN ; NORTHWESTERN CHINA ; SOUTHERN TIANSHAN ; NORTHERN MARGIN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000361075200001 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62255]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.SINOPEC Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China 3.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin Wei,Li Le,Zhang ZhongPei,et al. Paleozoic tectonic of evolution of Tianshan orogen: In the view from a structure analysis of the HP-UHP metamorphic belt of SW Chinese Tianshan[J]. ACTA PETROLOGICA SINICA,2015,31(8):2115-2128. |
| APA | Lin Wei.,Li Le.,Zhang ZhongPei.,Shi YongHong.,Li QiuLi.,...&Wu Lin.(2015).Paleozoic tectonic of evolution of Tianshan orogen: In the view from a structure analysis of the HP-UHP metamorphic belt of SW Chinese Tianshan.ACTA PETROLOGICA SINICA,31(8),2115-2128. |
| MLA | Lin Wei,et al."Paleozoic tectonic of evolution of Tianshan orogen: In the view from a structure analysis of the HP-UHP metamorphic belt of SW Chinese Tianshan".ACTA PETROLOGICA SINICA 31.8(2015):2115-2128. |
入库方式： OAI收割
来源：地质与地球物理研究所
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