摘要
本文以滇东、黔西晚二叠世含煤建造中同沉积火山灰蚀变粘土岩夹矸为例,研究了不同层位中锆石晶体含量和形态参数特征以及tonstein的微量元素标志,初步查明了它们在不同层位上和同层位空间上的变化规律,用于精确厘定层位具有独特的效果。在构造复杂、地层正常层序受到严重破坏的地段,应用此一鉴别层位的方法具有重要的实用价值。
Zircon crystal content and its morphologic parameter features in different lays and trace element marks of tonsteins have been studied in this article. The study is based on the synsedimentary volcanicash derived tonsteins in late—permian coal—bearing formation of eastern Yunnan and western Guizhou. China. Their changing patterns in various lays and in identical lay area have been preliminarily ascertained which have a unique effect upon the precise identification of lays. It has an important and practical value that using this approach to distinguish lay's position in the area with complicated structure, or in the area with normal lay orders having been suffered severe destruction.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1992年第4期18-23,共6页
Coal Geology & Exploration
关键词
煤田
锆石
形态
微量元素
层位
Tonsteins
zircon morphology
trace elements
Late permian
eastern Yunnan-western Guizhou
