辽西中元古界魏家沟岩群是四堡构造运动的构造产物,区域上经历了2期变形.第一期变形机制为中浅部构造层次的水平剪切流变,同时伴生绿片岩相区域变质作用.该期构造变形直接导致魏家沟岩群碎屑岩由层状体转化为片理化、条带状构造的似层状体,主要构造形迹有透入性片理、糜棱叶理、矿物线理.第二期变形以先期片理、糜棱叶理为变形面,形成一系列的褶皱构造和褶劈理构造,发生于浅部构造层次,其地质意义在于为铜多金属矿的富集提供了空间及动力. The Weijiagou Group in the Middle Proterozoic of Western Liaoning is the tectonic product of the four-Fort tectonic movement, and experienced two stages of deformation in the area.The first stage of deformation mechanism is the horizontal shear flow in the mid-shallow tectonic level, Regional metamorphism.The tectonic deformation of this period directly led to the Wei Jiagou rock group clastic rocks from the layered body into sheet-like, strip-like structure of the layered body, the main structural features are permeable, mylonitial The second phase of deformation in order to pre-treatment, mylonitial foliation as the deformation surface, forming a series of fold structure and folds cleft structure occurred in the shallow structure level, the geological significance lies in the copper polymetallic The enrichment of mines provides space and motivation.