摘要
乌当大、小麻窝断裂中的红花园组硅质岩呈团块状、透镜状、不规则状产出。野外观察和显微镜下鉴定表明这些硅质岩可能为交代作用形成。常量元素分析表明硅质岩以SiO2为主,其他含量较低。通过岩石显微镜下研究、化学全分析、微量元素分析、稀土元素分析,初步推测:该区硅质岩的形成是含大量硅质的热液活动作用于红花园组的生物碎屑灰岩,发生SiO2等交代生物碎屑灰岩的产物。
Siliceous rocks of Honghuayuan formation is lumps,lenticular,irregular-shaped between DA Mawo fault and XIAO Mawo fault in WU Dang area.Through Field observations and microscopic research,it can see the remnants of texture and structure of sedimentary rocks in siliceous rocks.Constant elements analysis shows that the main element in siliceous rocks is SiO2,the others are lower.Through researching the rocks under the microscope,chemical analysis,trace elements analysis,REE analysis,the initial guesses： the formation of siliceous rocks in the area is that a lot of silica containing in hydrothermal play a role in the Honghuayuan formation bioclastic limestone,then occurring products by SiO2,exchanging bioclastic limestone,while the hydrothermal activity and tectonic movement in this area.
出处
《贵州大学学报（自然科学版）》
2011年第1期48-52,58,共6页
Journal of Guizhou University:Natural Sciences
基金
贵州大学国家大学生创新性实验计划项目资助(2009)
关键词
硅质岩
断层
热液
交代作用
乌当教学实习基地
siliceous rocks
fault
hydrothermal
metasomatism
Wudang teaching base
