| 冀东宽城-青龙-金厂峪金矿集中区早燕山期构造应力场及其对金矿化的控制作用 |
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| 引用本文： | 吴珍汉,张景学.冀东宽城-青龙-金厂峪金矿集中区早燕山期构造应力场及其对金矿化的控制作用[J].地质力学学报,1998,4(1):51-57. |
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| 作者姓名： | 吴珍汉 张景学 |
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| 作者单位： | [1]中国地质科学院地质力学研究所 [2]河北省宽城县华尖金矿 |
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| 基金项目： | 国家自然科学基金,4870164项目与地矿部"八五"、"九五"燕山造山带基础研究项目的部分成果 |
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| 摘 要： | 冀东宽城－青龙－金厂峪金矿集中区早燕山期地壳运动与构造－岩浆活动强烈，形成了区内ＮＥ向、ＥＷ向与ＮＷ向压扭性－扭性主干断裂构造－岩浆带与２０多个金矿床。早燕山期构造应力场对这些断裂的形成演化与金矿的成矿作用有重要的控制意义。在野外调研与古构造应力测量的基础上，确定受力方式、位移方向与若干地点的差应力值，进而应用有限元计算模拟方法，剖析早燕山期区域平面构造应力场及其与金矿化的关系。结果表明，该金矿集
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| 关 键 词： | 构造应力场 早燕山期 冀东地区 金矿床 矿化 |
| 收稿时间： | 1997/6/24 0:00:00 |
| 修稿时间： | 1997/7/27 0:00:00 |
EARLY YANSHANIAN TECTONIC STRESS FIELD AND ITS CONTROL OF GOLD MINERALIZATION OF THE KUANCHENG-QINGLONG-JINCHANGYU GOLD DEPOSIT-CONCENTRATED REGION OF THE EAST HEBEI PROVINCE |
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| Wu Zhenhan and Zhang Jingxue.EARLY YANSHANIAN TECTONIC STRESS FIELD AND ITS CONTROL OF GOLD MINERALIZATION OF THE KUANCHENG-QINGLONG-JINCHANGYU GOLD DEPOSIT-CONCENTRATED REGION OF THE EAST HEBEI PROVINCE[J].Journal of Geomechanics,1998,4(1):51-57. |
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| Authors: | Wu Zhenhan and Zhang Jingxue |
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| Institution: | Institute of Geomechanics, CAGS and Huaijian Gold Deposit of Kuancheng County, Hebei Province |
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| Abstract: | Strong crustal movement and tectono-magmatic activity of early Yanshanian period occurred in the Kuancheng-Qinglong-Jinchangyu gold deposit-concentrated region of east Hebei Province,and resulted in the formation of major regional compressional-shear faults and magmatic zones and more than 20 gold deposits.The early Yanshanian regional tectonic stress field played an important role in the formation and evolution of these faults and gold metallogenesis.On the basis of field investigation and palaeostress measurement,the early Yanshanian regional geodynamic condition,displacement directions and differential stresses of several locations of this gold-concentrated region were determined.Then the corresponding regional tectonic stress field of the early Yanshanian period was calculated by using the finite-element numerical modelling methods,and the relationship between regional tectonic stress field and gold mineralization was analysed.The following conclusions regarding the early Yanshanian regional tectonic stress field were obtained:(1) the maximum principal compressional stress is oriented in NW-SE direction while the minimum principal compressional stress in N E-SW direction for most units;(2) the regional differential stresses range from 2.5 to 220 M Pa;(3) the direction,magnitude and gradient of regional tectonic stress evidently controlled the distribution of gold deposits and gold mineralization. |
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| Keywords: | tectonic stress field gold mineralization early Yanshanian period east Hebei Province |
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