柴达木盆地北缘逆冲构造与砂岩型铀矿的关系初析

The Relationship Analysis of Thrust Structure and Sandstone Type Uranium Deposits at Northern Margin of Qaidam Basin

柴达木盆地北缘逆冲推覆构造带是寻找砂岩型铀矿的远景区,该区构造复杂,后期改造强烈,逆冲构造发育,最常见的构造样式有单冲构造、对冲构造、反冲构造、斜坡带等。不同的构造样式造成沉积地层产状和厚度存在差异,同时影响砂岩型铀矿成矿环境。通过分析不同的构造样式与铀矿化的关系,认为在不同逆冲构造样式中铀矿找矿工程部署有所差异。

The thrust belt at northern margin of the Qaidam basin is prospective area for finding sandstone-type uranium deposits. The structure is complicated,post-reformation is strong and thrust structure develops in this area. Single thrust structure,opposite thrust structure,recoil structure and slope zone are the most common structural patterns. The different of tectonic style causes differences in occurrence and thickness of sedimentary strata and effects the metallogenic environment of sandstone-type uranium deposits. By analyzing the different between the tectonic style and uranium mineralization,it shows that uranium prospecting works deployment vary with the different of thrust tectonic styles.