相山火山盆地主要地质单元物性特征分析

发布时间：2018-05-08 09:01

本文选题：相山 + 密度　；参考：《科学技术与工程》2017年27期

【摘要】：相山铀矿田为我国主要铀矿资源基地之一。对相山火山盆地主要地质单元的密度、磁化率、电阻率、极化率与波速物性进行了测试分析,测试样本覆盖地质单元包括鹅湖岭组一段、鹅湖岭组二段、沙洲单元、打鼓顶组一段、打鼓顶组二段、青白口系等。对测试数据采用3倍均方差法剔除异常值后进行数据统计,得到了常见值、平均值、变化范围等参数,结果表明变质岩与火山岩之间存在良好的物性界面,为深部找矿物探方法的开展提供了物性基础。通过逆质量磁化率(密度/磁化率)与密度交会分析,可较为明显的将物性交会区域划分为四个区,分别对应4类填图单元。该研究全面认识了相山火山盆地主要地质体的物性特征,对在该区开展重磁联合反演提供了新的思路,对该区深部探矿很有意义。
[Abstract]:The Xiangshan uranium ore field is one of the main uranium resource bases in China. The density, susceptibility, resistivity, polarizability and wave velocity properties of the main geological units in the Xiangshan volcanic basin are tested and analyzed. The test sample covering geological units include the goose Leng formation, the two sections of the goose Leng formation, the sandbank unit, the drum top formation, the two segments of the drum top formation. After eliminating abnormal values of the test data using 3 times mean square deviation method, the data are counted and the common values, average values and range of change are obtained. The results show that there is a good physical interface between the metamorphic rock and the volcanic rocks, which provides the physical basis for the exploration of the deep mineral exploration method. Compared with the density rendezvous analysis, the rendezvous area can be clearly divided into four regions, which correspond to the 4 types of mapping units respectively. This study comprehensively understands the physical characteristics of the main geological bodies in the Xiangshan volcanic basin and provides a new way of thinking for the joint inversion of the gravity and magnetic fields in this area, which is of great significance to the deep exploration in this area.

【作者单位】：东华理工大学核资源与环境国家重点实验室培育基地;
【基金】：国家自然科学基金(41764006,41364004,41104073,41504095,41304097) 中国地质调查局工作项目(1212011220248) 国家留学基金资助
【分类号】：P619.14;P631

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