摘要
乌拉斯太地区处东昆仑南部,属活动区造山带,成矿类型复杂。区内开展的1∶5万地面高精度磁测工作共圈定32处磁异常,其中甲类异常3处,乙类异常5处,丙类异常1处,基本掌握了区内磁异常的特征。通过异常查证工作,利用路线地质调查、地物化综合剖面及磁异常反演进行推断解释,总结异常成因主要为磁铁矿、低品位磁铁矿化绿泥石英片以及中酸性侵入岩体,并初步了解了区内铁、多金属成矿与磁场分布的相关关系。该次工作填补了区域相关资料的空白,为区内开展其他地质工作提供了相关依据。
Wulasitaiin area is located in east of the southern Kunlun area. It belongs to active orogenic belt with complex metallogenic types. 32 magnetic anomalies have been circled in the region in ground high precision magnetic survey with the scale of 1 ∶ 50000. Among them,3 abnormalies are class A type,5 abnormalies are class B type,and 1 abnormaly is class C type. Characteristics of magnetic anomalies in the region have been known primarily.Through anomaly verification work,by using route geological survey,comprehensive geophysical and geochemical profiles and magnetic anomaly inversion for inference and interpretation,it is summarized that the cause of abnormality is mainly magnetite,low grade magnetite ore chlorite quartz plate and intermediate acid intrusive rocks. The correlation between iron and gold mineralization and magnetic field distribution has been understood. The work fills the gap of regional related information,and provides the basis for other geological work in the area.
出处
《山东国土资源》
2016年第5期41-46,共6页
Shandong Land and Resources
关键词
磁异常
多金属成矿
青海乌拉斯太
Magnetic anomaly
characteristics
origin
Wulasitai area
Qinghai province
