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MICROSTRUCTURAL ANALYSIS OF MESO-CENOZOIC TECTONITES IN THE NORTHERN SEGMENT OF THE TAIHANG MOUNTAINS
Author(s): 
Pages: 102-110
Year: Issue:  1
Journal: SEISMOLOGY AND GEOLOGY

Keyword:  太行山北段紫荆关断裂带碎裂岩系列断层岩显微构造变形叠加;
Abstract: 太行山北段是大兴安岭-太行山-武陵山构造带中段的典型构造区,区内2条主断裂(紫荆关断裂和乌龙沟断裂)组成的断裂带发育中、新生代的碎裂岩系列断层岩.通过对断裂带内不同岩性原岩区的断层岩进行详细的显微构造研究,分析了3种主要变形强度类型的断层岩(碎裂化岩石或构造角砾岩、初碎裂岩、碎裂岩)的区域分布、显微结构以及微观变形机制,鉴定出断层岩中的3期构造变形叠加,结合区域资料探讨了区内中、新生代断层岩反映的3期主要构造运动及其特征,显示出构造强度逐渐减弱的演化趋势.
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