| 弧形构造带特征及其形成机制 |
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| 引用本文： | 郑成鹏,李,玮,徐世钊,张,杰,高赛男,贾,超.弧形构造带特征及其形成机制[J].地质科学,2018,0(3):1171-1185. |
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| 作者姓名： | 郑成鹏 李 玮 徐世钊 张 杰 高赛男 贾 超 |
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| 作者单位： | 西北大学大陆动力学国家重点实验室，西北大学地质学系 西安 710069 |
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| 摘 要： | 弧形构造是造山带中一种常见的构造样式，弧形构造带的形成过程对于揭示造山带的形成演化具有重要意义。弧形构造在平面上通常表现为平行型、汇聚型、发散型、截切型和混杂型5种类型。依据弧形构造带运动史和是否弯曲旋转，弧形构造带可分为原始弧、渐进弧与次级弧3类运动学模型。弧形构造带的形成主要与边缘地形、刚性块体阻挡、地层厚度与拆离层滑脱程度差异、走滑断层等地质条件，运动学特征，地球动力学背景和多期次构造运动叠加密切相关。
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| 关 键 词： | 弧形构造带 几何学 运动学 形成机制 |
| 收稿时间： | 2017-10-20 |
| 修稿时间： | 2017-10-20; |
The characteristics and formation mechanism of the curved structural belt |
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| Zheng Chengpeng Li Wei Xu Shizhao Zhang Jie Gao Sainan Jia Chao.The characteristics and formation mechanism of the curved structural belt[J].Chinese Journal of Geology,2018,0(3):1171-1185. |
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| Authors: | Zheng Chengpeng Li Wei Xu Shizhao Zhang Jie Gao Sainan Jia Chao |
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| Institution: | State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an 710069 |
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| Abstract: | The curved structure is one of the common structural styles in orogenic belts. The formation process of the curved structural belt is of great significance to reveal the formation and evolution of orogenic belt. The geometric features of the curved structures are usually shown in five types on the flat surface：Parallel, convergent, divergent, cut and mixed. Curved structural belt can be divided into three kinematic models：Primitive arc, progressive arc and secondary procline, which are based on their kinematic histories and the timing of curvature acquisition. The formation of curved structural belts are closely related to geological conditions（such as edge of the terrains, obstructing of rigid blocks, thickness of stratum, slippage degree difference and strike slip faults etc.）, kinematic characteristics, geodynamic settings and multi period tectonic movements. |
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| Keywords: | Curved structural belts Geometry Kinematics Formation mechanism |
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