铀矿地质

本文综合分析了国内外层间氧化带砂岩型铀矿形成的大地构造背景和盆地结构构造、岩相古地理、地貌与气候、水动力与水化学、层间氧化带发育等必备的有利条件，并进而提出了铀源丰富，气候干旱；稳定大盆，产状平缓；沉积大扇，相变不大；砂泥互层，埋深不大；含水性好，透水性强；层间氧化带发育，富含还原剂等找矿判据，以及“六位一体”的水成成矿模式。

This paper comprehensively analyses the geotectonic setting and favourable conditions,such as structure of the basin, sedimentary factes and paleogeography, geomorphology andclimate, hydrodynamics and hydrogeochemistry, the development of interlayered oxidationetc,necessary for the formation of sandstone uranium deposit of interlayered oxidation type,and further proposes the following prospecting criteria, namely: abundant uranium source,arid climate,stable big basin, flat-lying sandstone bed, big alluvial fan,little change in sedimentary facies,intercalation of sandstone and mudstone beds, shallow burying of sandstonebed, well-aquiferous sandstone bed,high permeability of sandstone bed,development of interlayered oxidation,and high content of reductant in sandstone. In addition, the 6 in 1 hydrogenic genetic model is proposed.