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秦岭造山带组成结构与演化的新认识
引用本文:杨志华,邓亚婷.秦岭造山带组成结构与演化的新认识[J].陕西地质,1999(2).
作者姓名:杨志华  邓亚婷
作者单位:西安工程学院!西安710054(杨志华),陕西地矿信息中心!长安710100(邓亚婷)
基金项目:地矿部秦巴科技攻关项目!85-01-018,国家自然科学基金!49272136,国家计委资助!96-30-43,国家科委资助!96-914-01-04
摘    要:据北秦岭及商丹带、南秦岭、勉略带、太白一佛坪一汉南带的组成、结构特征,结合深部资料,提出秦岭是由五类岩石地层地质体按非线性、混论动力学的关系组合在一起的拼贴、镶嵌、叠置、堆垛的综合构造体,是南北与东西共存的构造格局,经历了太古代一古无古代陆核或古陆块增生或拼贴的发展阶段;中一新元古代板块构造体制发展阶段;震旦纪一三叠纪饭内海相沉积盆地与造山带转换的发展阶段;印支或以来陆相沉积盆地与造山带转换的抽拉一道冲岩片构造(或抽拉构造)体制的发展阶段的发展演化。

关 键 词:北秦岭带  勉略带  佛坪带  板块构造  抽拉构造

NEW VIEWPOINTS OF THE COMPOSITION,STRUCTURE AND EVOLUTION OF QINLING OROGENIC BELT
Yang Zhihua.NEW VIEWPOINTS OF THE COMPOSITION,STRUCTURE AND EVOLUTION OF QINLING OROGENIC BELT[J].Geology of Shaanxi,1999(2).
Authors:Yang Zhihua
Abstract:on the basis of the new data of Qinling-Dabashan orogenic belt, the composition andstructure characteristics of the northern Qinling, Shangdan tectonic belt, southern Qinling,Mianlue tectonic belt and Taibai-Fuping-Hannan tectonic belt combining the deep data aredisscussed in detail. The tectonic units and the evolution stages of Qin1ing orogenic belt aredivided, and it is put forward that Qinling is asynthetic tectonic body piced together,mosaicked, layered and piled up by five kinds of rocks in nonlinarand chaodynamic way. Thenorth-south tectonics coexist the east-west tectonics. It has gone through the Archaean topaleo-Proterozoic continental nucleus growing stage, the meso-Proterozoic to neo-Proterozoicplate tectonic developing stage, the Sinian to Triassic sea basin transformaing orogenic beltdeveloping stage and continental basin transforming to the orogenic belt developing stage indrawing-out-thrusting tectonic system since Indosinian.
Keywords:northern Qinling  Mian-Lue tectonic belt  Fuping tectonic belt  plate tectonics  drawing-out tectonics
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