黑龙江省绥棱县建兴地区铀成矿条件及找矿方向分析

通过对绥棱县建兴地区铀成矿条件，包括铀源、构造条件、目的层岩性-岩相、砂体条件、水文地质条件等进行分析，总结了铀矿化特征和铀矿化成因及分布规律.据此认为：上侏罗统建兴组和下白垩统淘淇河组为本区主要含铀层位，区内砂岩型铀矿化主要为成岩同生沉积、后生淋滤叠加形成，距离蚀源区较近的基底凸起东翼陡坡变缓处及港湾式沉积环境为有利成矿部位，建兴地区宝山洼陷西缘至F₁断裂上盘及五场洼陷西缘为本区找矿远景区.

ANALYSIS ON THE METALLOGENIC CONDITION AND PROSPECTING DIRECTION OF THE URANIUM DEPOSIT IN JIANXING AREA,HEILONGJIANG PROVINCE

Based on the research of the metallogenic conditions of uranium in the Jianxing area, including the source of uranium, tectonic setting, lithology/lithofacies, sand bodies and hydrogeology, the characteristics, genesis and distribution of uranium mineralization are discussed. It is concluded that the Upper Jurassic Jianxing Formation and the Lower Cretaceous Taoqihe Formation are the main targets for sandstone-type uranium prospecting. The sandstone-type of uranium deposits in the area are mainly formed by synsedimentation with epigenetic infiltration. The favorable metallogenic positions are the eastern side of basement uplift near the provenance areas with harbor sedimentary condition. The area from the western margin of Baoshan depression to F1 fault is the prospective area.