航空磁测在黑龙江伊春地区夕卡岩型锌多金属矿的找矿应用

依据1：5万高精度航磁异常和地质特征进行选区，结合1：2万综合物化探查证技术，在小兴安岭伊春地区航磁异常区发现了夕卡岩型锌多金属矿，体现了航空磁测技术在夕卡岩型多金属矿找矿中的适用性.查证结果认为，下寒武统含大理岩地层与侵入岩接触部位航磁异常区是重要的夕卡岩型多金属矿找矿靶区，赋矿部位显示低阻高极化地球物理特征；土壤地球化学特征表现为地层与侵入岩接触部位存在Ag、As、Sb、Mo、W、Bi、Pb、Cu、Zn元素组合异常，异常套合好，Sb异常值高，出现于内带，Zn常见于中带.

APPLICATION OF AEROMAGNETIC SURVEY IN SKARN TYPE ZINC POLYMETALLIC DEPOSIT PROSPECTING IN YICHUN AREA,HEILONGJIANG PROVINCE

According to the 1:50000 scale high precision aeromagnetic anomaly survey and geological features for area selection, combined with the 1:20000 integrated geophysical-geochemical exploration and verification technology, the skarn-type Zn polymetallic deposit is found in the aeromagnetic anomaly area of Yichun, Xiaoxinganling Mountains, reflecting the applicability of aeromagnetic survey technology in such prospecting. The verification results indicate that the aeromagnetic anomaly area in the contact between the Lower Cambrian marble strata and intrusions is an important target for skarn type polymetallic deposits. The host area shows the geophysical characteristics of low resistivity and high polarization. Pedogeochemically, the element association anomaly of Ag, As, Sb, Mo, W, Bi, Pb, Cu and Zn occurs in the contact area, with well coincidence. The high Sb anomaly value appears in inner zone, while Zn commonly in the middle zone.