皖南屯溪地区重磁异常特征及找矿方向

摘要

Based on gravity and magnetic, geological and mineral resources data, this paper described characteristics of aeromagnetic and gravity anomalies in Tunxi area and, in combination with physical characters, analyzed geological factors responsible for the aero⁃magnetic and gravity anomalies and their reflections for geological structure and mineral resources. Gravity and magnetic anomalies are very clear in Tunxi area, which reflect the distribution regularity of basement, capping bed and intrusive rocks. It is held that Tunxi ba⁃sin is a Paleozoic basement and hence the prospecting space can be considerably enlarged. It is also considered that Zhuxi type super⁃large skarn tungsten⁃copper deposits are likely to be found in the Paleozoic basement of the red bed basin.%利用屯溪地区重磁、地质和矿产资料，阐述了屯溪地区航磁、重力异常特征，并结合物性特征，分析了航磁、重力异常的地质成因及其对地质构造和矿产的反映。屯溪地区重磁异常特征十分清晰，反映了屯溪盆地地基底、盖层和侵入岩分布规律，标明屯溪盆地是古生代基底，这一认识大大扩展了屯溪地区找矿空间，说明在红层盆地古生代基底中有寻找朱溪式超大型矽卡岩钨铜矿床的可能性。