| 东坪金矿床地质特征及构造控矿作用 |
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| 引用本文：李少众,靳光成.2000.东坪金矿床地质特征及构造控矿作用[J].地球学报,21(1):44-51. |
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| 基金项目:地质矿产部定向研究课题! (编号地科定 95 - 2 3 )，国家 3 0 5科技攻关项目!(编号 96- 915 - 0 4 - 0 3 - 0 2 )资助 |
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| 中文摘要:东坪金矿床具有雁列式分布的矿体 ,石英脉型与钾蚀变岩型叠置的矿化 ,多期次成矿作用的贫硫富碲型矿石等 3大特点 ,其中尤以雁列式分布的矿体最为特征 ,其形成是由于燕山期该区在SN向应力场作用下 ,产生一对左旋力偶 ,形成了一组走向NNE ,倾向NW的左行雁列式压扭性断裂和一组走向NW ,倾向SW的右行雁列式张扭性断裂。而二者在空间相互追踪中 ,NNE向断裂又严格制约了NW向断裂发展 ,从而构成多字型断裂构造格式 ,控制了金矿成矿作用。 |
| 中文关键词:石英脉型 钾蚀变岩型 雁列式 东坪 |
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| Geological Characteristics and Structural Ore-controlling Role of the Dongping Gold Deposit, Hebei Province |
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| Abstract:Orebodies of en echelon distribution, superimposed mineralization of quartz vein type as well as tellurium-rich and sulfur-poor type ore make up three characteristics of the Dongping gold deposit in Hebei Province. Orebodies of en echelon distribution seem to be the most prominent feature. The couple was produced in Yanshanian SN-trending stress pattern, and NNE-striking, NW-dipping left lateral en echelon compressional-shear fractures and NW-striking, SW-dipping right lateral en echelon tensional-shear fractures were formed in Dongping area. They traced each other in space,and NNE-striking fractures restricted the development of the NW-striking fractures. Two directive fractures composed Xi-type fractures system and controlled the mineralization of the gold deposit. |
| keywords:quartz vein type potassic altered rock type en echelon Dongping |
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