腾冲火山岩稀土和微量元素地球化学研究

本通过腾冲火山岩稀土和微量元素丰度的测试与分析，结合前人部分资料探讨了该区火山岩的稀土和微量元素地球化学特征：各喷发期火山岩均富集ＬＲＥＥ和Ｒｂ、Ｓｒ、Ｂａ、Ｕ、Ｔｈ等不相容元素；均具极为相似的稀土分配型式和微量元素地球化学模式，这可能反映了各其火山岩初始岩浆的同源性。

GEOCHEMISTRY OF THE RARE EARTH AND TRACE ELEMENTS IN THE VOLCANIC ROCKS IN TENGCHONG,CHINA

In this paper, through the determination and analyses of the abundance of the rare earth and trace elements in the volcanic rocks in Tenchong and in combination with a part of the previous study data, the geochemical characteristics of rare earth and trace elements in the volcanic rocks have been studied. The volcanic rocks in each eruptive period enrich both LREE and incompatible elements Rb, Sr,Ba, U, Th etc., and have both the most similar REE patterns and geochemical patterns of the trace elements. This possibly reflects the same origins of the primary magmas of the volcanic rocks of all the periods.