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矿床地质  2008 

了墩隆起西缘地浸砂岩铀矿成矿水动力条件的遥感处理与分析

Keywords: 地质学,地浸砂岩铀矿,水动力条件,遥感,了墩隆起

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Abstract:

鉴于吐哈盆地地表植被覆盖稀少,故利用遥感技术提取亮度、绿度、湿度指数并加以合成,以反映盆地及其周边的反射蒸腾强度、植被覆盖程度和土壤湿度的信息,显示出盆地排泄构造的空间展布特征,进而分析成矿期间研究区的水动力环境,并划分出主要补给区(觉罗塔格山、天山山脉)和排泄区(鲁克沁附近及位于两者之间的径流区).利用吐哈盆地现代三维地形图,结合盆地常规地质研究成果,反演成矿期间研究区及其周围地形高差特点,揭示出了墩隆起和西缘艾丁湖斜坡带的长期存在,以及它们影响了盆地的水动力系统,提供了南高北低长径流范围的成矿地形优势.

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