Using integrated geophysical research Lala M163-1 aeromagnetic anomaly and ore prospect analysis, in Huili county, Sichuan province, China

摘要

The previous person thought that the M163-1 aeromagnetic anomaly is caused by the concealed and magnetite content alteration gabbro, but through the study of regional gravity, magnetic data and geological data, we thought M163-1 aeromagnetic anomaly has the larger mineralization potential, which compare with Lala copper deposit M162 aeromagnetic anomaly. Therefore, the ground high-precision magnetic method and audio magnetotelluric sounding method are adopted to investigate the fine characteristics of magnetic anomaly and the deep electrical structure of Lala M163-1 aeromagnetic anomaly, which is combined with the regional magnetic data and geological data on abnormal area to carry out comprehensive geophysical verification work. Fine characteristic of magnetic anomaly and the deep electrical structure of Lala M163-1 are preliminarily determined by comprehensive analysis of regional gravity and magnetic, ground high precision magnetic and audio magnetotelluric sounding method. At last, We got two magnetic anomalies and relative high apparent resistivity anomalies, which are meaningful ore to anomaly. So, we got new knowing different from the previous person's about M163-1 aeromagnetic anomaly. This provides the important geophysical basis for the anomaly's ore-prospecting prospective study evaluation.