摘要
控制中国大陆形成演化的最主要构造格架是“十字构造带”,即东西向的中央造山系和南北向的贺兰—川滇构造带。中央造山系自东而西包括秦岭造山带、祁连造山带和昆仑造山带,是南方和北方陆块群历经古生代—早中生代拼合形成中国大陆主体的构造结合带,并遭受中新生代陆内造山改造;贺兰—川滇南北构造带不同区段继承了前寒武纪板块构造记录,逐步转化为古亚洲洋或古特提斯构造域大陆边缘,尤其是新特提斯构造运动,形成青藏高原隆升扩展变形的东部边界,控制了晚中生代—新生代中国大陆东西反转演化。该文介绍了近年来对“十字构造带”的主要研究进展:①建立了“十字构造带”中央造山系东段秦岭造山带的精细演化过程;②确定了“十字构造带”中央造山系西段昆仑—祁连—阿尔金的构造关系;③厘定了“十字构造带”南北构造带北段贺兰山形成演化过程及其构造属性;④重建了扬子板块西缘汉南—龙门山—川滇构造带新元古代板块俯冲消减过程以及古生代—中生代深部动力学;⑤揭示了“十字构造带”交接区的深部结构-动力学-浅表构造地貌的联动机制。
The most important tectonic framework controlling the formation and evolution of main China continent is the"Cross-Tectonics",that is,the EW trending Central Orogenic System and the NS trending Helan-Chuandian North-South Tectonic Belt.The Central Orogenic System includes,from east to west,the Qinling,the Qilian and the Kunlun orogenic belts.They were formed by the subduction-collision between the southern and northern continental blocks during the Paleozoic-Early Mesozoic period constituting the mainland of the China Continent,and then was overprinted by the Mesozoic to Cenozoic intracontinental orogenic events.The Helan-Chuandian North-South Tectonic Belt inherited the Precambrian plate tectonic records,and was gradually transformed into the continental margin of the Paleo-Asian Ocean or Paleo-Tethys tectonic domain.Due to the Neo-Tethys tectonic evolution,it was evolved into the eastern boundary of the uplift and expansion of the Tibetan Plateau,controlling the late Mesozoic-Cenozoic reverse evolution of the western and eastern China.This contribution introduces the major research progress on"Cross-Tectonics"in recent years:①the detailed evolution process of the Qinling Orogenic Belt in the eastern section of Central Orogenic System has been established;②the tectonic relationships of the Kunlun-Qilian-Altyn Tagh in the western section of the Central Orogenic System have been determined;③the formation and evolution process and tectonic setting of Helan Mountain in the northern section of the North-South structural belt have been determined;④the Neoproterozoic plate subduction process and Paleozoic-Mesozoic deep dynamic process of the Hannan-Longmenshan-Chuandian tectonic belt on the western margin of the Yangtze Block are reconstructed;⑤the linkage mechanism of deep structure-dynamics-shallow tomography in the junction area of"Cross-Tectonics"has been elucidated.
作者
董云鹏
赖绍聪
第五春荣
杨钊
孙圣思
陈丹玲
龙晓平
朱韧之
李玮
何登峰
孙娇鹏
苟龙龙
程斌
史小辉
张菲菲
柳小明
惠博
DONG Yunpeng;LAI Shaocong;DIWU Chunrong;YANG Zhao;SUN Shengsi;CHEN Danling;LONG Xiaoping;ZHU Renzhi;LI Wei;HE Dengfeng;SUN Jiaopeng;GOU Longlong;CHENG Bin;SHI Xiaohui;ZHANG Feifei;LIU Xiaoming;HUI Bo(Department of Geology/State Key Laboratory of Continental Dynamics,Northwest University,Xi′an 710069,China)
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第6期935-950,共16页
Journal of Northwest University（Natural Science Edition）
基金
国家自然科学基金资助项目(41421002,41930217)
西北大学地质学系大陆构造研究团队项目。
关键词
中央造山系
南北构造带
十字构造带
东亚大陆
陆内构造
Central Orogenic System
North-South Tectonic Belt
Cross Tectonics
East Asia continent
intracontinental tectonics
