层间氧化带砂岩型铀矿勘查的物化探技术

层间氧化带砂岩型铀矿往往形成可地浸的大型和超大型铀矿床。探索研究和使用物化探技术，开展深部铀成矿沉积地质环境的研究，确定砂体的分布、层间氧化带的展布和进行铀矿定位的技术是行之有效的。本文从方法原理和应用实例方面论述了找矿各阶段应把握的物化探关键技术。强调结合地质问题，进行岩（矿）石的物性研究、综合分析有效的物化探方法，开展铀矿的区调、普查和勘探工作。

GEOPHYSICAL AND GEOCHEMICAL PROSPECTING TECHNIQUES FOR THE EXPLORATION OF THE SANDSTONE TYPE URANIUM DEPOSITS IN INTERLAYER OXIDATION ZONE

Sandstone type uranium deposits in interlayer oxidation zone usually are large or superlarge and in-situ leachable. Geophysical and geochemical techniques are effective in determining the distribution of sandstone body and interlayer oxidation zone, and locating uraniumorebody and investigating subsurface uranium metallogenetic geological environment. Starting with the principle of exploration methods and some application examples, this paper discusses the key techniques applied at each prospecting stage, and emphasizes that, comprehensive geophysical and geochemical methods must be used in combination with geologicalinformation and physico-chemical properties of rocks (minerals) in the working area for carrying out the reconnaissance, prospecting and exploration of uranium deposits.