Midcrustal shearing and doming in a Cenozoic compressive setting along the Ailao Shan-Red River shear zone
文献类型：期刊论文
| 作者 | Zhang, B.1; Yin, C. Y.1; Zhang, J. J.1; Wang, J. M.2; Zhong, D. L.2; Wang, Y.1; Lai, Q. Z.3; Yue, Y. H.3; Zhou, Q. Y.4 |
| 刊名 | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
 |
| 出版日期 | 2017 |
| 卷号 | 18期号:1页码:400-433 |
| ISSN号 | 1525-2027 |
| 关键词 | Gneiss Dome Strike-slip Midcrustal Shearing Quartz Cpo Ailao Shan-red River Shear Zone Eastern Himalayan Syntaxis |
| DOI | 10.1002/2016GC006520 |
| 文献子类 | Article |
| 英文摘要 | The Cenozoic Xuelong Shan antiformal dome is located along the northern segment of the Ailao Shan-Red River shear zone in Yunnan, China. Subhorizontal foliation in the gneiss core is recognized, representing a broad top-to-NE shear initiated under amphibolite facies conditions and propagating into greenschist facies in the mantling schist and strike-slip shear zone. Microfabrics of crystallographic-preferred orientations (CPOs) in quartz suggest that the deformation temperatures increased with increasing structural depth from the upper crust (300-500 degrees C) in the mantling schist to the midcrust (15 km or more, 650 degrees C) in the gneissic core. This trend is mirrored by variations in the metamorphic grade of the syn-kinematic mineral assemblages and microstructures, which range from garnet+amphibole+biotite+sillimanite+rutile+feldspar in the core to garnet+staurolite+biotite+epidote+muscovite within the limb units. The dome experienced the following deformation history: (1) a broad top-to-NE shear in the subhorizontal foliation of the gneiss core during the first stage of deformation (D1); (2) opposing reverse-sense shear along the two schist limbs of the dome during contraction-related doming (D2-D3); (3) sinistral strike-slip shearing within the eastern limb (D4); and (4) extensional deformation (D5). The structural-thermal patterns suggest the antiformal dome formation was roughly coeval with top-to-NE ductile shearing in the midcrust of Tibet at 32 Ma or earlier. A major implication is that there was a phase of contractional ductile deformation in the region prior to the initiation of strike-slip deformation. |
| WOS关键词 | METAMORPHIC CORE COMPLEXES ; INDIA-ASIA COLLISION ; SOUTHERN TIBET ; GNEISS DOMES ; SE ASIA ; PREFERRED ORIENTATIONS ; DETACHMENT FAULTS ; AR-40/AR-39 GEOCHRONOLOGY ; DEFORMATION TEMPERATURES ; CONTINENTAL EXTRUSION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000395186600023 |
| 资助机构 | National Science Foundation of China (NSFC)(41272217) ; Excellent Young Scientist Foundation of NSFC(41422206) ; China Earthquake Administration, Special Research Grant for Non-Profit Public Service(201408001) ; National Science Foundation of China (NSFC)(41272217) ; Excellent Young Scientist Foundation of NSFC(41422206) ; China Earthquake Administration, Special Research Grant for Non-Profit Public Service(201408001) ; National Science Foundation of China (NSFC)(41272217) ; Excellent Young Scientist Foundation of NSFC(41422206) ; China Earthquake Administration, Special Research Grant for Non-Profit Public Service(201408001) ; National Science Foundation of China (NSFC)(41272217) ; Excellent Young Scientist Foundation of NSFC(41422206) ; China Earthquake Administration, Special Research Grant for Non-Profit Public Service(201408001) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53066]  |
| 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, B. |
| 作者单位 | 1.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing, Peoples R China 4.Earthquake Adm Yunnan Prov, Kunming, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, B.,Yin, C. Y.,Zhang, J. J.,et al. Midcrustal shearing and doming in a Cenozoic compressive setting along the Ailao Shan-Red River shear zone[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2017,18(1):400-433. |
| APA | Zhang, B..,Yin, C. Y..,Zhang, J. J..,Wang, J. M..,Zhong, D. L..,...&Zhou, Q. Y..(2017).Midcrustal shearing and doming in a Cenozoic compressive setting along the Ailao Shan-Red River shear zone.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,18(1),400-433. |
| MLA | Zhang, B.,et al."Midcrustal shearing and doming in a Cenozoic compressive setting along the Ailao Shan-Red River shear zone".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 18.1(2017):400-433. |
入库方式： OAI收割
来源：地质与地球物理研究所
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