浅析伊犁盆地砂岩型铀矿的成矿背景

伊犁盆地位于新疆境内天山海西造山带西段,属天山造山带内稳定微地块基础上发育的山间盆地。盆地地层发育完整,以沉积碎屑岩为主,其特征发育的泥-砂-泥沉积结构使盆地成为砂岩性铀矿勘探的理想地区。本文通过综合分析研究新疆伊犁盆地南缘区域地层、构造、盆地形成及演化历史、盆地含矿地层沉积特征,同时结合国内其他地区砂岩型铀矿的研究成果,对研究区铀矿成矿条件作出了系统地研究,并预测了该地区砂岩型铀矿的找矿勘探远景。

Initial Analysis on the Metailogenic Background of Sandstone Type Uramium Deposit in Yili Basin

Yili basin is located in the west part of hercyn- ian orogenic belt of Tianshan in the territory of Xinjiang, it be- longs to Tianshan orogenic belt on the basis of stable micro block. The strata of the belt matures thoroughly, the main com- position of the strata is sedimentary elastic rock, the structure of the basin which enjoys the characteristics of mud - sand - mud - makes the basin an ideal place for sandstone uranium explora- tion. In this paper, through a comprehensive analysis of the study area in the southern margin of the Xinjiang basin of Yili re- gional strata, tectonic, basin formation and evolution history and characteristics of ore -bearing strata, sedimentary charac- teristics, combining with the research results of sandstone type uranium deposits in other areas in the country, the author will make a systematic study of the metallogenic conditions in the are- a of uranium as well as predict the exploration prospect of sand- stone type uranium in this area.