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新疆北部壳体大地构造演化与运动初步研究

, PP. 113-121

Keywords: 壳体,运动-演化,活化作用,新疆北部

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Abstract:

位于亚洲大陆中腹的新疆北部地区,是由不同壳块组成的复合型大陆壳块区,经历了长期复杂的壳体运动-演化历程,造就了该区不同地段岩石圈结构和构造的差异。本文在前人研究的基础上,运用壳体大地构造学的研究思路和方法,通过对该区地质-地球物理特征和壳体结构的分析,将该区划分为4个不同性质和地壳结构的壳块,其中天山地区又可进一步分为东、西两段。文章分析了区域壳体的运动-演化特征,并初步认为东、西天山在深部地球物理特征、基底性质和前地台期的构造演化,可能分属不同的构造演化体制。中新生代全区先后经历了地台演化阶段之后,陆续发生活化作用,由于不同地段地壳和岩石圈结构的差异,形成浅部地壳不同的活化地质构造特征。

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