硬岩型铀矿化(点、带)地球物理特征

Geophysical characteristics of hard rock-hosted uranium deposits

为了深入研究硬岩型铀矿化(点、带)的地球物理特征,在桃山、红山子地区开展了综合物探测量。结果表明,在△T磁异常平面等值线图中,铀矿床(点、带)一般位于强弱磁异常过渡地带偏弱磁异常一侧,电阻率断面图中多位于高低阻梯度变化带或中低阻区,电阻率平面图中多位于中低阻过渡带偏低阻一侧。该硬岩型铀矿化地球物理特征为寻找该类铀矿有利地段提供了重要信息。

In order to exploration of hard rock-host uranium deposits, integrated geophysical method was applied in such hard rock-hosted uranium deposits as Taoshan, Hongshanzi and Yudaokou, etc. The paper summarizes and analyzes their geophysical characteristics. The results show that uranium occurrence usually is at the weaker part of variation trend be- tween strong and weak magnetic anomaly in magnetic anomaly contour and at variation trend between high and low resistivity or at median-low resistivity area in resistivity section map and at the lower part of variation trend between median and low re sistivity in apparent resistivity contour. This characteristic is important leading sense for prospecting work planning of hard rock uranium deposits. Geophysical characteristics of hard rock-hosted uranium deposits provide important information for uranium favorable.