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中国大陆构造中的西秦岭—松潘大陆构造结
引用本文:张国伟,郭安林,姚安平.中国大陆构造中的西秦岭—松潘大陆构造结[J].地学前缘,2004,11(3):23-32.
作者姓名:张国伟  郭安林  姚安平
作者单位:西北大学,大陆动力学教育部重点实验室,西北大学地质系,陕西,西安,710069
基金项目:国家自然科学资金重点资助项目(40234041)
摘    要:位于中国大陆中部的西秦岭—松潘大陆构造结属于地壳尺度上的巨型构造。该巨型构造是在中国大陆完成其主体拼合过程中 ,在特提斯阿尔卑斯—喜马拉雅、太平洋和古亚洲及其后的环西伯利亚弧形构造三大构造动力学体系共同作用下 ,由构成中国大陆的主要造山带及地块交接汇聚而成 ,成为东西向的中国大陆中央造山系、近南北向的川滇—贺兰构造带和中新生代以来形成的青藏高原之间交接转换的关键构造域。在先期构造基础上 ,构造结形成具有东、西和北三个重要边界以及内部东北、东南、西南和南端等多个具体构造结点。其内部主干构造勉略—阿尼玛卿构造带又将其划作西秦岭和松潘地块南北两部分。西秦岭—松潘构造结主要形成于中国大陆印支主拼合期 ,并叠加印支期后陆内构造。构造结内组成与结构复杂 ,构造样式繁多 ,包含有丰富的大陆地质信息 ,实属研究中国大陆地质与大陆动力学不可多得的天然实验室

关 键 词:西秦岭—松潘构造结  三大构造动力学体系  交接转换  印支期  东古特提斯域
文章编号:1005-2321(2004)03-0023-10
修稿时间:2004年8月13日

Western Qinling-Songpan continental tectonic node in China's continental tectonics
ZHANG Guo-wei,GUO An-lin,YAO An-ping.Western Qinling-Songpan continental tectonic node in China''''s continental tectonics[J].Earth Science Frontiers,2004,11(3):23-32.
Authors:ZHANG Guo-wei  GUO An-lin  YAO An-ping
Abstract:The western Qinling-Songpan tectonic node situated in the central China continent is an enormous structure on the crustal scale. During the completion of main amalgamation of China continent and under the coactions of the Alps-Himalayas, the Pacific ocean and the circum Siberia tectonic dynamic systems, the node was formed through various conjunction and transformation of different orogens and massifs that constitute the China continent. The tectonic node represents a key tectonic domain covering the conjunction and transformation area among the east-west striking Central Orogenic System, nearly south-north striking Sichuan-Yunnan-Helan tectonic belt and the Qinghai-Tibet plateau formed during the Mesozoic and the Cenozoic. On the basis of the early structures, the node formed the eastern, western and northern boundaries and a number of specific nodes such as northeastern, southeastern, southwestern nodes. And the major structure of the Mianlue-A’nyemaqen tectonic belt divided the node into two major parts of western Qinling and Songpan. The western Qinling-Songpan tectonic node was formed during the Indosinian amalgamation of China continent and superposed by the post-Indosinian intracontinental structures. With the complex structures and constituents, the tectonic node provides an excellent site for study of China continental geology and continental dynamics.
Keywords:western Qinling-Songpan tectonic node  three tectonic and dynamic systems  conjunction and transformation  Indosinian period  east paleo-Tethys domain
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