中国东部中生代构造格局与演化  

Mesozoic Tectonic Framework and Evolution of Eastern China

作　　者：侯泉林 林伟[2] 许德如[3] 闫全人 刘庆 何苗 王智琳 卫巍 郭谦谦 

机构地区：[1]中国科学院大学,北京100049 [2]中国科学院地质与地球物理研究所,北京100029 [3]中国科学院广州地球化学研究所,广州510640 [4]中南大学,长沙410083

出　　处：《矿物岩石地球化学通报》2017年第6期1063-1067,共5页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家重大研发计划项目(2016YFC0600401)

摘　　要：中国东部早中生代以挤压构造为主,如大别造山带的逆冲推覆构造,而晚中生代伸展构造十分显著,表现为大量发育的变质核杂岩、同构造岩浆岩、拆离断层带以及穹隆构造等,这些伸展构造使地壳深部的岩石折返至地表,从而使中下地壳结构发生了强烈的改造。拟通过对中国东部晚中生代构造发育的典型地区:北部的燕山构造带、中-东部的大别-苏鲁构造带和东部的东南沿海构造带进行系统的研究、分析、归纳和总结,恢复燕山运动启动前的构造体制,研究中国东部对多幕次燕山运动中地壳变形对板块相互作用及其深部过程的响应,阐明中国东部燕山期构造体制转折的期次、时限、动力学演变机制及其与板块运动的关系,进而探讨其对成矿作用的制约。Eastern China was dominated by compressional structures in early Mesozoic but vast extensional structures in the Late Mesozoic. A large humber of extensional structures, such as metamorphic core complexes, synteetonic plutons, detachments and domes, have exhumed the middle to lower crust into surface, and changed the structure of middle-lower crust dramatically. This paper aims to investigate the late Mesozoic structures in typical areas of Eastern China that include Yanshan tectonic belt in the north, Dabie-Sulu tectonic belt in the central and the coastal tectonic belt in the southeast. This project will also try to reconstruct the tectonic framework before Yanshanian period for its critical role to know how crust deformation responded to interaction and deep process of plates during the Yanshanian period. The purpose of this project is to illuminate the tectonic phase, activity time, dynamic mechanism, and relationship to relevant plates in East- ern China during Yanshanian period, and discuss the constraint on the metallic mineralization.

关 键 词：晚中生代 伸展构造 变质核杂岩 动力学机制 

分 类 号：P534.5[天文地球—古生物学与地层学] P542[天文地球—地质学]