白银地区前寒武纪火山岩的构造环境探讨

STUDIES ON TECTONIC ENVIRONMENTS OF VOLCANIC ROCKS IN BAIYIN AREA

本文根据区域地质调查和某些专题研究过程中所获资料数据，应用地球化学方法，通过从火山岩岩石化学、微量元素、稀土元素三方面的各种地球化学参数与典型构造环境对比和各种图解判别分析，认为白银前寒武纪火山岩确属火山岛弧构造环境。

On the basis of the data from regional geological survey and some monographic studies on Banyin area,by means of geochemistry,and by analyzing the geochemical parameters of the volcanic petrochemistry,traceelements and REE and by comparison with the typical tectonic environment in manifold diagrams,it is firmlybelieved that the volcanic rocks in Baiyin belong to island are setting。