古河道型砂岩铀矿的主要地质特征及有关找矿工作的方针探讨

MAIN GEOLOGIC CHARACTERISTICS OF PALEOCHANNEL TYPE SANDSTONE HOSTED URANIUM DEPOSITS AND RELEVANT PROSPECTING AND EXPLORATION POLICY

文章通过对俄罗斯、蒙古一些已知古道型铀矿床的调研，归纳了该类铀矿床空间定位的构造控制、铀源的近源性、潜水氧化成因、含矿层的单层位性等与勘查工作有关的地质特征，并在分析上述特征的基础上提出我国今后对古河道型砂岩铀矿勘查工作方面的对策和方针。

The paper summarizes main prospecting and exploration related geologic characteristics of paleochannel type sandstone hosted uranium deposits such as the structural control over the spatial emplacement of the deposit, the near source occurrence, the phreatic oxidation origin, the occurrence of the uranium mineralization mostly in one horizon etc. On the basis of analyzing the above characteristics the prospecting and exploration policy of such uranium deposits is proposed.