摘要
高钛辉绿岩为富钠碱性系列,玄武岩浆有较明显的分异。稀土元素总量较高,轻稀土元素富集,无明显Eu异常或亏损。微量元素蛛网图中,Rb、Ba、Th和Hf、Zr、Sm两组元素双隆起的特征,与板内碱性玄武岩特征相似。综合多种图解判别,属于大陆裂谷环境。
The Ti-high diabase belongs to the Na-rich alkaline series.The differentiation of basalt magma is very evident.The total REE is high,rich in LREE,without evident Eu anomaly or deficit.dual rises of 2 element assemblages Rb,Ba,Th and Hf,Zr,Sm on cobweb diagram,similar to the characteristics of intraplate alkaline basalt.According to multiple discriminant criteria,it is formed in the continental rift environment.
出处
《云南地质》
2012年第3期396-400,共5页
Yunnan Geology
基金
云南国土资源职业学院教师科研基金项目(2011YJ02)
