二连盆地马尼特坳陷砂岩型铀矿体准确定位研究

Determined position of uranium ore body in Manite depression of Erlian basin

马尼特坳陷是二连盆地五大坳陷之一,近年来成为寻找砂岩型铀矿重点工作区.为了快速有效地在该区寻找和控制砂岩型铀矿体,利用地质、物探和样品数据等手段在工作中对其进行了分析和研究.在马尼特坳陷已知工作区的铀矿化特征基础上,通过对成矿砂体分布研究来定位钻探评价区的范围,利用目的层底板和岩芯编录来分析砂体的还原能力和水动力变异部位,利用测井曲线和样品分析数据等确定砂体的含铀性和矿化部位.利用以上方法对铀矿(化)体的富集规律进行了探讨和分析,从而达到准确定位铀矿(化)体的目的,也为进一步铀矿找矿工作提供参考.

Manite depression is one of the five depressions in Erlian basin which becomes an important area for searching sandstone type uranium deposit in recent years.In order to find and control the uranium ore body rapidly and efficiently in the area,the researches and analysis on geology,geophysical prospecting and specimen are presented.Based on the characteristics of the ore in the explored area,the following methods are used for the researches of the sandstone distribution to draw the fixed drilling area;the aim stratum and core drawing to analyze the sandstone＇s deoxidize ability and water power aberrance part;the borehole measure and the data of specimen to fix the sandstone＇s uranium content and uranium mineralization.Thus,the enrichment role of the uranium ore is discussed and analyzed and an accurate determined position for the uranium ore body is obtained,which is a referent way for the work in future.