康滇地轴南段江川盆地澄江砂岩微量元素地球化学特征及其地质意义

主要阐述了江川盆地澄江砂岩（Zac）的紫色砂岩与灰色砂岩、铀矿化蚀变岩微量元素及稀土元素地球化学特征。通过判别与对比，澄江砂岩（Zac）物质来源于活动大陆边缘，虽然铀矿化主要分布在灰色砂岩中，但灰色砂岩并不是控制铀矿化的主要因素，在铀矿化时有深部流体物质的影响。微量元素地球化学特征对探索该区砂岩型铀矿化以及寻找不整合面型铀矿床提供了可能，具有重要的指示意义。

Geochemical Characteristics of Trace Elements and Geological Significance of Chengjiang Sandstone in Jiangchuan Basin,Kangdian Axis

This article focuses on the trace elements and REE geochemical characteristics of Proterozoic purple sandstone,grey sandstone,and altered rocks relevant with Uranium mineralization in Chengjiang group(Zac). Compared with the trace elements among them,it comes to the conclusion that the reourse of the sandstone comes from an active continental margin,and It is affected by the deep fluid related to uranium mineralization. Although the uranium mineralization is in the grey sandstone ,it is not the main control...