| 太行山中北段神仙山逆冲推覆构造发展与演化 |
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| 作者姓名： | 何娇月 王金贵 申宗义 郭彬 陈圆圆 季虹 张立国 张鹏程 |
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| 作者单位： | 河北省区域地质调查院,廊坊 065000 |
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| 基金项目： | 中国地质调查局“河北省地质系列图件编制与综合研究(编号: 1212011120111)”项目资助 |
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| 摘 要： | 太白维山逆冲推覆构造是太行山中北段多金属矿的主要控矿因素,前人对该逆冲推覆构造的变形特征、演化机制及其与成矿作用的关系进行了详细研究,而对南东侧神仙山逆冲推覆构造的研究较少。根据野外第一手资料,对神仙山逆冲推覆构造的几何学特征进行了统计,对各组成单元(飞来峰、逆冲推覆断裂、外来岩系(推覆体)及原地岩系)的展布特征、产出形态和变形机制进行了分析,根据组合样式、地层厚度及各逆冲推覆断裂与切割地层之间的几何关系,对其运动学特征进行了研究,得出神仙山逆冲推覆构造总体推覆方向为由NW向SE,总推覆平均距离约为23.3 km。结合该推覆构造切割的地质体与被覆盖、被改造的先后关系,探讨了神仙山逆冲推覆构造的发展与演化过程,该逆冲推覆构造经历了华力西中、晚期—燕山早期的初始活动,燕山中、晚期的主期发展和喜马拉雅期的后期改造3个阶段,为进一步研究神仙山逆冲推覆构造带上地层、岩浆岩、矿产与构造的关系提供了构造地质资料。
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| 关 键 词： | 逆冲推覆构造 炭灰铺构造盆地 发展与演化 神仙山 太行山中北段 |
| 收稿时间： | 2019-04-08 |
Development and evolution of Shenxian Mountains overthrust nappe structure in the middle and north section of Taihang Mountains |
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| Authors: | HE Jiaoyue WANG Jingui SHEN Zongyi GUO Bin CHEN Yuanyuan JI Hong ZHANG Liguo ZHANG Pengcheng |
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| Institution: | Regional Geological Survey Institute of Hebei Province, Langfang 065000, China |
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| Abstract: | The deformation characteristics, evolution mechanism and metallogenic relationship of overthrust nappe structure in Taibaiwei Mountains which is the main ore-controlling factor of polymetallic deposits in the middle and north section of Taihang Mountains, have been studied in detail by predecessors, but Shenxian Mountains overthrust nappe structure in southeastern Taihang Mountains is rarely studied. Based on the first-hand data in the field, the geometrical characteristics of the overthrust nappe structure in Shenxian Mountains were statistically analyzed. The distribution, occurrence pattern, deformation mechanism of each unit (Feilai Peak, overthrust nappe fault, exotic rock series (nappe) and autochthone) were analyzed. And the kinematics characteristics were studied based on the assemble pattern, the development thickness of relevant stratum, and the geometric relationship between each overthrust nappe fault and cut stratum. The overall nappe direction of the overthrust nappe structure in Shenxian Mountains is from NW to SE, with the average distance of total thrust about 23.3km. Combined with the precedence relationship between the geological body cut by the nappe structure and the covered and reconstructed performance, the authors discussed the development and evolution process of the overthrust nappe structure in Shenxian Mountains. This overthrust nappe structure has gone three stages, namely the initial activity in Middle and Late Hualixi - Early Yanshan Period, main development in Middle and Late Yanshan Period and reform activity in Late Himalaya Period, which provides tectonic geological data for further study on the strata, magmatic rocks, and the relationship between minerals and structures in this overthrust nappe structure belt. |
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| Keywords: | overthrust nappe structure Tanhuipu structural basin development and evolution Shenxian Mountains the middle and north section of Taihang Mountains |
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