| 断裂带中岩石硅化的微束研究 |
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| 引用本文： | 孙岩,杜定全.断裂带中岩石硅化的微束研究[J].贵州工业大学学报(自然科学版),1988(3). |
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| 作者姓名： | 孙岩 杜定全 |
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| 作者单位： | 南京大学地质系，南京大学地质系 博土研究生 |
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| 摘 要： | 断裂带中岩石的硅化现象,通常称之为硅化岩或硅化破碎带,即经动力变质作用的断层岩,通过微束技术对其观察,它们显示出下列特征:在扫描电镜(SEM)下,硅化物质表现为细脉状,而在偏光里微镜下则表现为浸染状;对硅化岩进行组构观察,可见压扁 S 面和剪切 S 面;在透射电镜(TEM)下,可进一步区别不同的位错现象;断裂带岩石的硅化现象是受组成岩石的化学元素的构造地球化学作用所制约的,包括动力分异和化学亲和作用,动热变质作用和退化变质作用,氧化和还原作用以及脱水和水解作用。
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| 关 键 词： | 断裂带 岩石 硅化 微束技术 |
Study of Microscopic Technique for Rocky Silicification in Fault Zone |
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| Sun Yah Du Dingquan.Study of Microscopic Technique for Rocky Silicification in Fault Zone[J].Journal of Guizhou University of Technology(Natural Science Edition),1988(3). |
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| Authors: | Sun Yah Du Dingquan |
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| Abstract: | The phenomenon of rocky silieification in fault zones is generally called silicified rock or silicified fracture zone,namely the fault rock from the dynamo-metamorphic rock.They have the following character- isitics when observed through microscopic technique- The substance of rocky silicifieation indicates different form of vein body under SEM,but it is dissipative through microscopy.In conformity with fabric observation,there are flattening S plane and sheering S planes in silicified rock.The phenomena of dislocations which are very developmental have been distinguished by TEM.The rocky silicification in fault zone is controlled by various tectono-geochemical agencies:the dynamo-differentiation and chemical affinity,the dynamothermal meta- morphism and diaphthorisis,the oxidation and reduction,the hydrolysis and dewatering. |
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| Keywords: | fault zone rock silicification microscopic technique |
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