摘要
以新疆HM-76工区地面重磁测量数据为基础,在完成多种场数据处理变换后,利用“集块理论”求得磁性体的顶、底深度;然后结合地质及其它物化探资料,对该工区重新进行了综合研究,提出几点新认识:(1)HM-76工区具备多金属成矿靶区良好的地质前提;(2)HM-76负磁异常可能由自身反转磁化所引起;(3)主体地质体可能为一近直立的截面似椭圆的向下延伸基性—超基性柱体;(A)主体与围岩接触带可能是有希望的多金属成矿带。其上几个呈弧形排列的重磁局部异常可能由强磁、高密度、强极化矿体引起。
Basing on the magnetometric end gravimetric data over the HM-76 region in Xinjiang, where the researches for metallic ores are specially concentrated, we had pretreated the original data by means of the compensated and smoothed filtering method, and done correspondence analysis between magnetic anomalies end gravity anomalies after separating the shallow sources field from the deep sources field.The reversed negative magnetic anomalies were polarized by using the program improved. The top and bottom depths of magnetic rock mass according to Specter and Grant theory had been calculated after completing the treatment and transformation of the data of anomalous fields.Then, we studied again the worked region by comparing the geological information with geophysical and geochemical data. Some new points of view on the geological problems of this region are given as following.1. The HM-76 region has the good geological condition for seeking the mineral deposits.2. The negative anomalies of the HM-76 region may be caused by self-reversed magnetization.3. The geological mainbody of this region may be a basificated and supper-basificated rock rod with vertical inclination and elliptic horizonal section.4. The HW-76 region may be the most favourable place for locating the mineral deposits.
关键词
物化探
多金属
成矿带
新疆
self-reversed magnetization, correspondence analysis, sounding of induced polarization, geochemical gas survey, ionic extraction
