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DOI | 10.1130/B35672.1 |
Macro- and microstructural analysis of the Zhujiafang ductile shear zone, Hengshan Complex: Tectonic nature and geodynamic implications of the evolution of Trans-North China orogen | |
He L.; Zhang J.; Zhao G.; Yin C.; Qian J.; Liu J.; Liu X.; Zhao C. | |
发表日期 | 2021 |
ISSN | 167606 |
起始页码 | 1237 |
结束页码 | 1255 |
卷号 | 133期号:2021-05-06 |
英文摘要 | In worldwide orogenic belts, crustal-scale ductile shear zones are important tectonic channels along which the orogenic root (i.e., high-grade metamorphic lower-crustal rocks) commonly experienced a relatively quick exhumation or uplift process. However, their tectonic nature and geodynamic processes are poorly constrained. In the TransNorth China orogen, the crustal-scale Zhu-jiafang ductile shear zone represents a major tectonic boundary separating the upper and lower crusts of the orogen. Its tectonic nature, structural features, and timing provide vital information into understanding this issue. Detailed field observations showed that the Zhujiafang ductile shear zone experienced polyphase deformation. Variable macro- and microscopic kinematic indicators are extensively preserved in the highly sheared tonal-ite-trondhjemite-granodiorite (TTG) and su-pracrustal rock assemblages and indicate an obvious dextral strike-slip and dip-slip sense of shear. Electron backscattered diffraction (EBSD) was utilized to further determine the crystallographic preferred orientation (CPO) of typical rock-forming minerals, including hornblende, quartz, and feldspar. EBSD results indicate that the hornblendes are characterized by (100) <001> and (110) <001> slip systems, whereas quartz grains are dominated by prism and prism |
语种 | 英语 |
来源期刊 | Bulletin of the Geological Society of America
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/184682 |
作者单位 | Guangdong Provincial Key Laboratory of Mineral Resources & Geological Processes, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China; Department of Earth Sciences, University of Hong Kong, Pokfulam Road, Hong Kong |
推荐引用方式 GB/T 7714 | He L.,Zhang J.,Zhao G.,et al. Macro- and microstructural analysis of the Zhujiafang ductile shear zone, Hengshan Complex: Tectonic nature and geodynamic implications of the evolution of Trans-North China orogen[J],2021,133(2021-05-06). |
APA | He L..,Zhang J..,Zhao G..,Yin C..,Qian J..,...&Zhao C..(2021).Macro- and microstructural analysis of the Zhujiafang ductile shear zone, Hengshan Complex: Tectonic nature and geodynamic implications of the evolution of Trans-North China orogen.Bulletin of the Geological Society of America,133(2021-05-06). |
MLA | He L.,et al."Macro- and microstructural analysis of the Zhujiafang ductile shear zone, Hengshan Complex: Tectonic nature and geodynamic implications of the evolution of Trans-North China orogen".Bulletin of the Geological Society of America 133.2021-05-06(2021). |
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