| 陕西双王含金角砾岩地质特征及成因初探 |
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| 引用本文： | 汤静如,汪劲草,王国富,彭恩生,史静海.陕西双王含金角砾岩地质特征及成因初探[J].西北地质,2002,35(1):60-64. |
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| 作者姓名： | 汤静如 汪劲草 王国富 彭恩生 史静海 |
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| 作者单位： | 1. 中南大学地质研究所,湖南,长沙,410083
2. 陕西太白金矿,陕西,宝鸡,706127 |
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| 基金项目： | 国家自然科学基金项目 (编号 4 9772 15 2 )，太白金矿找矿项目联合资助 |
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| 摘 要： | 双王金矿含金角砾岩为水力压裂成因角砾岩。认为该水压角砾岩体是深源富碱含金流体在泥盆系一套热水沉积的富钠质岩系中发生水力压裂作用形成的。早期共轴递进挤压使能干性的富钠质岩系与非能干性的富泥质岩系发生构造透镜石香肠化；晚期的非共轴递进剪切使早期在透镜体中心形成的构造裂隙由剪性转化为张性，并产生巨大的压力降使深部的流体在富钠质岩系中沿裂隙发生水力压裂作用，从而形成双王水力压裂含金角砾岩。
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| 关 键 词： | 水压角砾岩 地质特征 地质证据 水力压裂成因 双王 |
| 文章编号： | 1009-6248(2002)01-0060-05 |
| 修稿时间： | 2001年2月14日 |
The geological features and preliminary study of gold-hosted breccia in Shuangwang ore deposit, Shaanxi |
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| TANG Jing-ru ,WANG Jing-cao ,WANG Guo-fu ,PENG En-sheng ,SHI Jing-hai.The geological features and preliminary study of gold-hosted breccia in Shuangwang ore deposit, Shaanxi[J].Northwestern Geology,2002,35(1):60-64. |
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| Authors: | TANG Jing-ru WANG Jing-cao WANG Guo-fu PENG En-sheng SHI Jing-hai |
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| Institution: | TANG Jing-ru 1,WANG Jing-cao 1,WANG Guo-fu 1,PENG En-sheng 1,SHI Jing-hai 2 |
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| Abstract: | Gold-hosted breccia in Shuangwang ore deposit is hydrofracturing breccia. The hydrofracturing breccia is formed by deep rich-sodic and gold-hosted fluid hydrofracturing in a set of Devonian system hot-water sedimentary rich-sodic rocks. The early coaxial progressive depressing makes the forming of tectonic lens in the competent rich-sodic and incompetent rich-mud rocks ; the later nocoaxial progressive shearing makes the tectonic compression fracture into extension fracture in the early tectonic lens, at the same time, the great drop of pressure leads to the hydrofractureing of deep fluid along the fracture in the rich-sodic rocks, and then produces the hydrofracturing breccia. |
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| Keywords: | hydrofracturing breccia geological features geological envidence hydrof-racturing genesis Shuangwang |
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