华北地台东缘的印支运动烙印--来自大连地区的构造形变信息

大连地区是稳定地台发生强烈变形的典型代表。研究表明，自中生代以来该区受多期较强烈构造变形事件的影响，强烈的改造、叠加造成该区复杂的地壳构造面貌，其中NS向剪切变形是区内规模最大、影响范围最广的构造变形，形成大规模EW走向巨型平卧、同斜倒转褶皱，造成大范围地层倒转。本文以变形构造动力学为纲，通过详细的地质调查及构造解析，对大连地区的NS向剪切变形进行了系统研究，确定其变形时间为晚印支期，认为晚印支运动是大连地区褶皱构造格架的奠基构造事件，这种大规模的板内变形是扬子板块和中朝板块陆一陆碰撞的陆内变形效应。

Indosinian Orogeny in the Eastern Margin of North China Platform:Tectonic Deformation in Dalian Area

As a typical area of intense deformation on thestable platform, Dalian area has been subjected to multi-phase intense deformation events since Mesozoic. Due to violent structural reformation and superimposed deformation, its crustal structure is very complicated. The NS-trending shear traction deformationis the largest and most influential structural deformation in the area, forminggigantic recumbent folds and overturned folds and resulting in large-scale stratigraphic overturning. In this paper, the authors have studied the NS-trendingshear traction deformation through detailed geological investigation and structural analysis, and determined the age of this deformation. It is considered that the post-Indosinian orogeny is the fundamental structural event of the fold-structure framework in Dalian area. The large-scale intraplate deformation is an intracontinental deformation effect of the continent-continent collision between Yangtze plate and Sino-korean plate.