四川米易地区前震旦纪五马箐组变质岩特征及原岩恢复

Study on the metamorphic rock feature and protolith reconstruction of Precambrian Wumaqing Group metamorphic rocks form Miyi district, Sichuan Province

近年来,在四川米易地区前震旦纪五马箐组的变质-混合岩中发现了具有重要找矿前景的混合岩型铀矿,而有关其变质岩特征及原岩恢复研究对查明区内混合岩型铀矿的成矿地质环境具有重要意义。在系统野外地质调查和室内综合研究的基础上,对该套变质岩的岩石学特征、岩石地球化学特征以及变质原岩特征进行了深入分析。

In recent years, the migmatite type uranium deposits with important prospecting potential have been discovered in the metamorphic-mixed rocks of the pre-SinianWumaqing Group in the Miyi area of Sichuan Province. And the study on the characteristics of Wumaqing Group metamorphic rocks and the protolith reconstruction is of great significance for the identification of mineralized geological environment of the migmatite type uranium deposits. On the basis of the detailed field geological survey and rock mineralogy research, we mainly focused on the characteristics of petrology and geochemistry and metamorphic preexisting of these rocks.