Continental-scale shearing triggered by Oligocene subduction in Myanmar-Indochina, SE Asia
文献类型：期刊论文
| 作者 | Zhang, Ji'en6; Xiao, Wenjiao1,6; Zhang, Bo5; Wakabayashi, John4; Cai, Fulong3; Sein, Kyaing2 |
| 刊名 | GEOLOGICAL JOURNAL
 |
| 出版日期 | 2023-11-27 |
| 页码 | 21 |
| ISSN号 | 0072-1050 |
| 关键词 | Indochina intra-continental Mogok Metamorphic Belt Oligocene shear zone syn-subduction |
| DOI | 10.1002/gj.4907 |
| 英文摘要 | Continental-scale shear zones in Indochina record Cenozoic tectonic processes in SE Asia. Previous extrusion models link these shear zones to northward indentation of the Indian continent and conflict with distributed Oligocene conjugate strike-slip pairs, formed by E-W-directed compression (present coordinates). This paper presents evidence of Oligocene shearing along the Mogok Metamorphic Belt in Myanmar, the western boundary of the Indochina block. The Kyanigan quarry at northern Mogok Metamorphic Belt exposes paragneiss, marble and quartzite schist with E-W striking, which would be dragged from N-S striking foliations of the main Mogok Metamorphic Belt by right-lateral shearing of the brittle Sagaing Fault. After restoration, right-lateral shearing 'sigma' structures, cored with garnet, in paragneiss in the Kyanigan quarry are consistent with 'sigma' and 'delta' structures in the Moulmein granitic mylonite to the south. U-Pb ages of metamorphic zircon of a sheared paragneiss and a leucogranite, cross-cutting shear foliation in the Kyanigan quarry, and a biotite Ar-39-Ar-40 age of mylonite at Moulmein constrain dextral shearing to 33-25.4 Ma, coeval with other 31-24.5 Ma shear zones in Indochina. The eleven NW-striking left-lateral shear zones and N-S to NE-striking right-lateral shear zones define Oligocene conjugate fault patterns in Indochina. After restoration of similar to 80-45 degrees clockwise rotation, these Oligocene conjugate shear zones, coupled with the anticlinal configuration of the Xuelongshan and Doi Inthanon-Doi Suthep domes, reflect approximate N-S-directed shortening. These structures to the north with coeval Myanmar-Sumatra magmatic arc to the south demonstrate that they correspond to back-arc contraction during northward subduction of the Indian Ocean. Oligocene continental-scale intra-continental shearing may be triggered by syn-subduction compression in SE Asia. |
| WOS关键词 | CENOZOIC TECTONIC EVENTS ; MOGOK METAMORPHIC BELT ; U-PB ; NORTHERN THAILAND ; WESTERN YUNNAN ; KHLONG MARUI ; DOI INTHANON ; RIFT BASINS ; FAULT ZONE ; FORE-ARC |
| 资助项目 | CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; NSFC[41888101] ; NSFC[42172247] ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China[2021A03001] ; [131551KYSB20200021] ; [IGCP 710] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:001110006700001 |
| 资助机构 | CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; NSFC ; NSFC ; NSFC ; NSFC ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; NSFC ; NSFC ; NSFC ; NSFC ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; NSFC ; NSFC ; NSFC ; NSFC ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; CAS Project of the China-Pakistan Joint Research Center on Earth Sciences ; NSFC ; NSFC ; NSFC ; NSFC ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China ; Science and Technology Major Project of Xinjiang Uygur Autonomous Region of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111143]  |
| 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 | Zhang, Ji'en |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi, Peoples R China 2.Myanmar Geosci Soc, Yangon, Myanmar 3.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China 4.Calif State Univ Fresno, Dept Earth & Environm Sci, Fresno, CA USA 5.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing, Peoples R China 6.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 | Zhang, Ji'en,Xiao, Wenjiao,Zhang, Bo,et al. Continental-scale shearing triggered by Oligocene subduction in Myanmar-Indochina, SE Asia[J]. GEOLOGICAL JOURNAL,2023:21. |
| APA | Zhang, Ji'en,Xiao, Wenjiao,Zhang, Bo,Wakabayashi, John,Cai, Fulong,&Sein, Kyaing.(2023).Continental-scale shearing triggered by Oligocene subduction in Myanmar-Indochina, SE Asia.GEOLOGICAL JOURNAL,21. |
| MLA | Zhang, Ji'en,et al."Continental-scale shearing triggered by Oligocene subduction in Myanmar-Indochina, SE Asia".GEOLOGICAL JOURNAL (2023):21. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。