| 大别造山带东部假玄武玻璃的成因 |
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| 引用本文： | 刘建民,董树文,张家声,刘晓春,陈柏林.大别造山带东部假玄武玻璃的成因[J].地质力学学报,2003,9(2):97-105. |
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| 作者姓名： | 刘建民 董树文 张家声 刘晓春 陈柏林 |
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| 作者单位： | 1. 中国地质科学院地质力学研究所, 北京 100081; |
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| 基金项目： | 国家自然科学基金项目(编号:40172077)的阶段性研究成果。 |
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| 摘 要： | 最近,在大别造山带东部广泛发现了假玄武玻璃出露点,这些假玄武玻璃主要沿NE-SW向断裂带或剪切带发育。某些假玄武玻璃内发育糜棱质条带。本文主要讨论了大别造山带东部假玄武玻璃的显微构造、岩石化学及稀土元素地球化学等特征,在此基础上阐述了发育在该地区的假玄武玻璃的成因。
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| 关 键 词： | 成因 显微构造 地球化学 假玄武玻璃 大别造山带 |
| 文章编号： | 1006-6616(2003)02-0097-09 |
| 收稿时间： | 2003/5/12 0:00:00 |
ORIGIN OF PSEUDOTACHYLITES FROM THE EASTERN DABIESHAN OROGENIC BELT |
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| LIU Jian-min,DONG Shu-wen,ZHANG Jia-sheng,LIU Xiao-chun and CHEN Bai-lin.ORIGIN OF PSEUDOTACHYLITES FROM THE EASTERN DABIESHAN OROGENIC BELT[J].Journal of Geomechanics,2003,9(2):97-105. |
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| Authors: | LIU Jian-min DONG Shu-wen ZHANG Jia-sheng LIU Xiao-chun and CHEN Bai-lin |
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| Institution: | 1. Institute of Geomechanics, CAGS, Beijing 100081, China;2. Institute of Geology, Chinese Seismological Bureau, Beijing 100029, China |
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| Abstract: | Recent field survey in the eastern Dabieshan has revealed extensive occurrences of pseudotachylite. The pseudotachylite tends to occur in the NE-SW trending fracture zones or shear zones which parallel the Tan-Lu fault zone and cut all the pre-Cretaceous geological bodies. Mylonitic bands are developed in some pseudotachylites. This paper mainly discusses the origin of the pseudotachylites according to the geochemistry between the pseudotachylites and their host rocks, as well as the characteristics of the microstructures gained by optical microscope and SEM imaging. |
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| Keywords: | orgin microstructure geochemistry pseudotachylite the estern Dabieshan |
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