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矿床地质  2006 

基于模糊逻辑的中甸岛弧斑岩型铜矿定位预测

Keywords: 地质学,模糊逻辑,航磁解译构造格架,GIS,斑岩铜矿,定位预测,中甸岛弧

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Abstract:

文章选择中甸岛弧地区中比例尺地表填图所圈定的侵入岩及火山岩、航磁解译构造格架及汇水盆地沉积物多元素异常作为斑岩型铜矿定位预测的主要方法,总结提出了该区斑岩型铜矿的定位预测准则,并根据该准则在GIS平台上基于模糊逻辑模型进行了模糊成员权重赋值和模糊推理网络构建。通过模糊推理计算得到该区不同高度、不同方向航磁解译构造的交汇部位以及不同元素的组合异常特征,最终确定了该区可以发现斑岩型铜矿的模糊概率分布图。该区主要矿床如普朗、红山和雪鸡坪等均处于高模糊概率分布区,经野外检查验证发现普上和地苏嘎两处斑岩铜矿矿化新区。

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