内蒙古巴彦塔拉盆地构造与铀矿化的遥感地质研究

通过TM数据假彩色合成、纹理分析、目视解译及隐伏信息提取等手段,解译了内蒙古巴彦塔拉盆地内铀矿找矿目标层(K₁b)出露范围,解译并野外追索了NE向的控盆断裂组(F₁、F₂、F₃)、NNE向断裂组(F₂₀、F₂₁)以及NW、近EW向断裂组,通过对古河道、现代地貌水系的分析,总结了区内新构造运动的特点;通过热辐射信息、植被信息的提取,分析了地下水补-径-排的特点和铀矿化的关系。

STRUCTURES AND URANIUM METALLIZATION RESEARCH IN BAYANTALA BASIN BY REMOTE SENSING

Based on color synthesis, textural analysis, image interpretation and extraction of concealed information, the authors interpreted the outcrop regions of Bayanhua Formation (K 1 b ), the basin-controlling NE-trending faults (F 1, F 2, F 3), the NNE-trending faults (F 21 , F 20 ), the NW-trending faults and the nearly EW-trending faults, and updated the geological map of Bayantala basin, Inner Mongolia. An analysis of the information of paleochannels and geomorphology revealed the features of neotectonics. The recharge-flow-discharge characteristics of groundwater in relation to uranium mineralization were studied by extracting information of rock heat radiation and plant cover . On the basis of the above research , it is considered that the distribution of facies zones of Tenggeerian fan-deltas near the southeastern margin of the basin is controlled by F 3 and F 2; the pattern of Saihantalaian paleochannel is controlled by F 2, F 21 and NW-trending faults, and the phreatic and phreatic-interlayer oxidation zone is controlled by the fault-block uplift generated by the combined action of NE-trending, NW-trending and nearly EW-trending faults.