辽东南中生代构造演化及其与金矿形成的关系

辽东南地区中生代受到三期构造运动的影响且各具特色:①三叠纪的印支运动以形成东西向构造线及较多的"S"型花岗岩为特征;②侏罗纪的早燕山运动以近东西向挤压为主,在辽南地区以形成线理走向为北西西向的推覆构造为特征;③晚侏罗世晚期到早白垩世的晚燕山运动产生大量北东、北北东向断裂,同时发生了强烈的左行走滑。上述三期构造运动对金矿的形成均有一定的影响,三个时期均有一定规模的金矿化作用,金矿化的主要时期是在晚侏罗世晚期到早白垩世。

TECTONIC EVOLUTION HISTIRY OF SOUTH-EAST LIAONING PROVINCE IN MESOZOIC ERA AND ITS RELATIONSHIP WITH GOLD DEPOSITS

There are mainly three period tectonic movements that affect the south—east Liaoning area in Mesozoic Era，besides they are different：（a）．The Indosinian movement in Triassicperiod is characterized by tectonic lines of Wast—East stretching， and“S”type granite.（b）．The early Yarishan movement by the end of late Jurassic peroid is characterized by theoverthrusting with the lineations trending NWW—SEE，（c）． From the end of late Jurassicto early Cretaceous, the late Yanshan movement producted a lot of sinistral displacementfaults trending NE or NNE—ward． The gold deposits mainly formed in the end of late Juras-sic to early Cretaceous peroid.