摘要
笔者采用单元—超单元方法对面积仅２．４ｋｍ２的牛尾巴冲酸性侵入岩体进行了工作，确认其为复式岩体，并将其分解为１４个侵入体，归并成５个单元，建立了一个系列。通过对各单元岩石学、岩石化学、稀土元素和微量元素等方面资料的分析，认为属Ⅰ型花岗岩。结合同位素年龄资料，将其活动时代划为早震旦世。
In this paper,the Niuweibachong acid intrusive body only with an area of 2.4 km2 is studied by unit-ultra-unit method,which confirms that it is a composite rock body,And it can be divided into 14 intrusive bodies that are merged into 5 units comprising a rock series.Basing upon the analysis of the data of petrology,petrochemistry,REE and trace-element of every unit,it is regarded as an I-type granite. The magmatism period is considered to be Early Sinian according to the isotopic age determination.
出处
《云南地质》
1995年第3期223-230,共8页
Yunnan Geology
