中文摘要：

在分析伊犁盆地洪海沟地区西山窑组上段区域地质背景的基础上,通过综合研究该区砂体厚度、综合测井资料视电阻率平均值、氧化砂岩厚度与砂岩厚度的比值以及研究区岩相分布规律,对该区域氧化带分布特征及砂岩氧化强度变化特征,沉积环境与铀成矿的关系进行了探讨,总结了成矿有利岩相分布特征,并推测了有利成矿地带。研究表明：（1）洪海沟铀矿床西山窑组上段地层赋存的铀矿体主要受到沉积环境、砂体等因素的控制,即有利的沉积环境为砂岩型铀矿成矿提供了基础,厚大的砂体为铀成矿提供了较好的沉积场所以及含铀、含氧水的运移通道,含铀、含氧水的运移方向决定了区域成矿的沉积部位;（2）研究区西山窑组上段的铀矿体多发育于曲流河道砂体变薄和岩屑粒度变小的部位。上述研究进一步表明,利用综合测井资料中的视电阻率均值来研究沉积环境的思路具有可行性,加之综合测井资料的数字化程度高、测量结果连续性好,使得该思路在研究铀矿沉积环境时更便捷、高效。

英文摘要：

Taking the upper section of Xishanyao formation in Honghaigou area in Yili basin as the study example, based on the related geological results of the area, the regional geological background of study area is analyzed, the distribution characteristics of oxidation zone and the variation characteristics of oxidation strength of sandstone, the relationship between sedimentary environment and uranium metallo- genic are discussed, the distribution characteristics of favorable metallogenic lithofacies is summarized, and the favorable metallogenic belt is also predicted based on the comprehensive study of sandbody thick- ness, average values of apparent resistivity of comprehensive logging data, the ratio value of oxidation sandstone thickness and sandstone thickness, and lithofacies distribution regularities. The study results show that：①the uranium ore-bodies occurred in the upper section of Xishanyao formation of Honghaigou uranium deposit is mainly controlled by the factors of sedimentary environment, that is to say, the metallo- genie foundation of sandstone-type uranium deposit is provided by sedimentary environment, the favorable site and the migration channel of oxygen uranium water is provided by large and thick sandbody, the sedi- mentary area of regional metallogenie is determined by the migration direction of oxygen uranium water;② the uranium ore-bodies of the upper section of Xishanyao formation in the study area are mostly developed in the positions of the attenuation of sandbody thickness and reduction of cuttings particle size. The above study results further indicated that the method of using the average value of apparent resistivity of compre- hensive logging data to conduct the study of sedimentary environment is feasible, besides that, the compre- hensive logging data has the characteristics of high degree of digital and strong continuity of measurement results, therefore, which make the above study method more convenient and efficient during the analysis process of sedimentary environment of