基于物探化探技术的攀枝花——安益南段航磁异常查证

Aeromagnetic anomaly verification of Panzhihua-Anyi south section basedon geophysical and geochemical techniques

航磁异常查证是通过对异常的地面查证,结合区内地质概况、岩(矿)石物性、化探资料及定量计算,确定引起航磁异常的地质因素,初步判断磁性体的形态、产状、范围,为进一步的地质、物化探工作提供依据,对异常的找矿远景作出初步评价,提出进一步工作的具体意见。在四川攀枝花-云南安益地区共筛选21个航磁异常,选择其中9个异常开展结合瞬变电磁(TEM)为主的地球物理勘探和地球化学勘探方法的航磁异常查证工作。经过对选定异常点进行的以剖面法为主的地面三级异常查证工作,发现共有云C-2011-19玉和庄航磁异常、云C-2011-27大荒田航磁异常、云C-2011-32俄梅兰航磁异常、云C-2011-54大村航磁异常等航磁异常处有进一步的研究价值。

Aeromagnetic anomaly verification is to determine the geological factors causing aeromagnetic anomaly,preliminarily judge the shape,occurrence and scope of magnetic body through the ground investigation of anomalies,combined with the geological survey,physical properties of rocks(ores),geochemical data and quantitative calculation,so as to provide basis for further geological,geophysical and geochemical exploration,and make a preliminary evaluation on the prospecting prospect of the anomaly Specific suggestions on step work.A total of 21 aeromagnetic anomalies were screened in Panzhihua Anyi area,Sichuan Province,and 9 of them were selected to carry out aeromagnetic anomaly verification combined with geophysical and geochemical exploration methods based on transient electromagnetic(TEM).Through the verification of three-level surface anomalies mainly by profile method,it is found that there are some aeromagnetic anomalies such as yunc-2011-19 yuhezhuang aeromagnetic anomaly,yunc-2011-27 dahuantian aeromagnetic anomaly,yunc-2011-32 omeilan aeromagnetic anomaly and yunc-2011-54 Dacun aeromagnetic anomaly,which have further research value.