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北秦岭地区较广泛发育不同岩类组合、不同古构造环境的中、晚元古代地质体,并构成断续残留的古构造岩相岩带,它们是在晋宁期(1000Ma±)碰撞造山过程中形成于华北古板块南部的古造山带的组成部分。研究表明,华北古板块南部曾经历中元古代早期板块裂解、向洋发展;中元古代晚期洋盆俯冲、消减;中无古代末-晚元古代初(晋宁期)碰撞造山的构造作用过程。鉴于秦岭造山带显生亩板块运动的分隔性,在未恢复显生宙板块运动的前提下,北秦岭和南秦岭在晋宁运动期间形成的结构、构造特征不能以现今状态作简单的时、空对比和分析。
In the North Qinling area, the middle and late Proterozoic geological bodies of different rock assemblages and different paleo-tectonic settings are widely developed, and the intermittent residual ancient structural lithofacies belts are formed. They were formed during the collision orogeny of Jinning Period (1000Ma ±) In the northern part of the ancient plate orogenic belt formed part of the ancient orogenic belt. The study shows that the southern part of North China Paleo-plate had experienced the cracking of the Early Mesoproterozoic plate and developed toward the ocean. The subduction and abatement of the ocean basin in the late Mesoproterozoic, and the tectonic process of the collision between the end of the Late Proterozoic and the Early Proterozoic (Jinning period). In view of the divisional nature of the extensional Mu plate movement in the Qinling orogenic belt, the structure and tectonic features formed by the North Qinling and South Qinling during the Jinning movement can not be reconstructed with the present state without the restoration of the Phanerozoic plate motion. Empty comparison and analysis.