浅谈苏阿苏地区构造特征和铀找矿方向

Tectonic characteristics and uranium prospecting direction in Suasu area

苏阿苏地区划分为南部向斜带、中间凸起带和北部单斜带 3个次级构造单元。文章认为铀成矿作用发生在这些次级构造单元形成之后 ,且具有找矿前景的是南部向斜带水西沟群第Ⅱ、Ⅲ、Ⅴ、Ⅶ旋回砂体和北部单斜带水西沟群第Ⅰ、Ⅱ、Ⅲ、Ⅴ旋回砂体及小泉沟群砂体。从容矿层位连续性、分布面积、砂体特征及层间氧化带发育特征等成矿条件看 ,北部单斜带铀成矿条件和找矿前景均优于南部向斜带。

The Suasu area geologically is divided into three subsidiary tectonic units, namely the southern syncline, the median uplift and the northern monoclinal zone. Authors suggest that uranium ore formation occurred after the appearance of the above subsidiary tectonic units, and sandstone bodies of the Ⅱ,Ⅲ,Ⅳ,Ⅶ cycles, Shuixigou Group in the southern syncline, and sandstone bodies of the Ⅰ,Ⅱ,Ⅲ,Ⅴ cycles, Shuixigou Group, as well as sandstone bodies of Xiaoquangou Group in the northern monoclinal zone, they are prospecting potential. According to metallogenic conditions, such as the continuity and distribution area of the ore hosting horizon, characteristics of sandstone bodies and features of interlayer oxidation zone, prospecting potential of the northern monoclinal zone is better than that of the southern syncline.