新疆准噶尔盆地黄花沟地区铀成矿条件及找矿方向

Uranium Metallogenic Conditions and Prospecting Direction in Huanghuagou Area,Junggar Basin,Xinjiang

准噶尔盆地西北缘黄花沟地区中-新生代地层发育齐全,地下水补径排体系完整,具备了砂岩型铀矿成矿的先决条件,具有较好的找矿前景。文章通过梳理该地区构造背景、主要地层和砂体的发育特征、层间氧化带的发育情况,概述了砂岩型铀矿成矿条件,讨论了吐孜托依拉主构造活动时间及其对于铀成矿的影响,通过构造和地层分析论述了该地区下一步找矿的方向,提出了吐孜托依拉逆冲断裂上盘及其内的下白垩统吐谷鲁群、中侏罗统西山窑组为砂岩型铀矿找矿有利的地段和层位。

The sandstone type uranium metallogenic conditions in Huanghuagou area where the Mesozoic-Cenozoic strata was well developed with the groundwater system of the recharge,runoff and drainage in the northwest Junggar Basin.This paper analysed the sandstone type uranium metallogenic conditions of the Huanghuagou area by discussing the tectonic background of the area,the characteristics of main strata,sand bodies and interlayer oxidation zone.It expound the active time of Tuzituoyila main structure and its impacts on uranium mineralization in this area.The exploration orientation of sandstone type uranium deposit was stated through the analysis of the structure and strata.It was proposed that the Tugulu Group and Xishanyao Formation is the favorable strata and the hanging wall of Tuzituoyila thrust fault is the favorable area.