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西澳皮尔巴拉地块BIF型铁矿遥感地质特征与找矿研究

DOI: 10.6046/gtzyyg.2015.04.15, PP. 93-101

Keywords: 皮尔巴拉,BIF型铁矿,遥感地质,找矿模型,蚀变信息提取

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Abstract:

为了从遥感角度对西澳大利亚哈默斯利盆地的沉积变质条带状含铁建造(bandedironformation,BIF)型铁矿进行深入研究,利用ETM图像对皮尔巴拉地块进行地质矿产解译,采用ASTER图像对目标区域进行矿化蚀变信息提取;结合传统地质矿产理论及相关文献,对区内BIF型铁矿的遥感地质特征及其成矿机理进行深入解剖、对比和研究,在此基础上建立了BIF型铁矿的遥感地质找矿模型;并圈定了找矿远景区,以期能在BIF型铁矿找矿(前期)技术方面取得突破,为寻找BIF型铁矿提供技术支持与帮助。具有现实验证意义的是,在所圈定的找矿远景区进行野外调查时发现,澳大利亚力拓集团已经在纽曼—必和必拓C区远景区内筹建一处大型铁矿,前期平地工作已基本完成。

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