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鄂尔多斯盆地基底断裂与能源矿产成藏成矿的关系

, PP. 459-464

Keywords: 鄂尔多斯盆地,基底断裂,能源矿产,地球化学场,深部流体

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Abstract:

对鄂尔多斯盆地内基底断裂特征及其活动性、盆地元素地球化学场以及与能源矿产关系作了对比和分析。结果表明,鄂尔多斯盆内基底断裂控制了多种能源矿产的分布特征,盆地北部以天然气、大中型煤田为主,南部以油田、中小型煤矿为主,断裂带发育地段以油-气混合区为主,铀矿富集受基底断裂或深断裂的控制。元素地球化学场与基底断裂关系密切,不同高、低背景的元素地球化学场展布位置、走向或扭曲变形与相应地段的基底断裂存在有关,基底断裂控制了地球化学场和元素组合特征;基底断裂的存在与活动、地球化学场特征反映出盆地内存在深部流体活动的迹象,基底断裂的活动为深部流体的运移并参与多种能源矿产的成藏成矿作用提供了有利条件。

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