澳大利亚芒特艾萨地区遥感地质特征与找矿模型——以沉积变质型铜多金属矿为例

The remote sensing geological characteristics and prospecting model of Mount Isa, Australia: A case study of the metasedimentary copper-polymetallic deposit

利用遥感技术对澳大利亚芒特艾萨地区铜多金属矿的遥感地质特征进行研究。根据ETM遥感影像数据,对芒特艾萨地区的遥感地质矿产解译,总结和分析该区区域地层、构造和岩浆岩的影像特征。在解剖芒特艾萨铜矿等3处典型铜多金属矿床的基础上,分析各控矿要素的遥感影像特征,初步建立了该类型铜多金属矿的遥感地质找矿模型。根据找矿模型圈定1处遥感地质特征相符的找矿远景区。通过遥感影像数据研究,划分和进一步缩少找矿靶区,对减少境外矿产投资的盲目性具有一定的指导意义。

Using remote sensing technique, the authors studied the remote sensing geological characteristics of copper-polymetaUic deposits in Mount Isa, Australia. Based on the EMT image data, the authors summarized and analyzed the image features of regional stratigraphy, structure and magmatic rocks by using remote sensing geology and mineral resources interpretation in Mount Isa. Through investigating three typical copper-polymetallic deposits, such as the Mount Isa copper deposit, the remote sensing image characteristics of the ore-controlling factors were analyzed, and a remote sensing geological prospecting model was put forward for this type of copper-polymetallic deposits. According to this model, the authors determined a potential prospecting area which is matched well with remote sensing geological characteristics. On the basis of investigating and analyzing image data, the prospecting target area was delineated and further reduced, which could provide the guidance for reducing bhndness in mining investment abroad.