【摘要】 塔北隆起西部中晚二叠世岩浆岩的分布受断裂控制,酸性火山岩在塔北隆起广泛分布,呈东西向展布,可能受石炭-二叠纪东西向断裂的控制;玄武岩仅分布在英买力低凸起和哈拉哈塘凹陷,受近南北向断裂控制。地球化学分析认为,它们是属裂谷火山岩特征的板内火山岩,是早二叠世大火成岩省后期热事件的产物。更多还原

【Abstract】 The distribution of magmatic rocks of the Middle-Late Permian in western Tabei uplift controlled by the faults leads to the acidic volcanic rock distribution to EW in the uplift controlled by EW faults of the Carboniferous-Permian.The basalt merely distributed in Yingmaili swell and Halahatang sag is controlled by near-SN faults.The geochemical analysis indicates that the magmatic rocks in this study area belong to the intraplate volcanic rocks characterized by rift volcanic rock and the product of the late thermal event in the Early Permian large igneous rock province in Tarim basin.更多还原