宁安盆地砂岩型铀成矿预测评价

Metallogenic prediction and potential evaluation of sandstone type uranium deposit in Ning'an basin

通过分析山市典型矿床成矿特征和成矿条件,厘定了该矿床的成矿要素,建立了成矿模式,结合区域成矿规律研究,认为宁安盆地砂岩型铀成矿主要受铀源、岩性-岩相、氧化带、水文地质、铀矿化信息等要素控制;采朋固体矿产矿床模型综合地质信息预测技术,基于GIS平台,将以上要素信息转换成有效的GIS的图层(点、线、面)变量,应用MRAS软件,采用特征分析法进行远景区的圈定,最终优选出Ⅰ级远景区1片、Ⅱ级远景区2片,认为山市外围地段、岭后—复兴地段和前杨一岔路地段是铀矿找矿的有利地区。

Through the analysis on metallogenic characteristics and conditions of Shanshi typical uranium deposit, the key factors were identified and the metallogenic model was set up. Combined with the research achievements of regional metallogenic regularity, it was believed that controlling factors are uranium source, fithology-fithofacies, oxidation zone, hydrogeology as well as urmfium mineralization information, the prognosis technology of the solid mineral resources model are adopted to evaluate the source with comprehensive geological information. On the basis of GIS platform, the above information of prognosis factors are transformed to the effective variables （point, line, surface） GIS layer. By applying MRAS software, and characteristics analysis method, the target areas were delineated.Finally, one rank- I perspective area, two rank- Ⅱ perspective areas had been selected.It is considered that surrounding areas of Shanshi, Linghou-Fuxing and Qianyang-Chalu sections are favorable areas for uranium prospecting.