In Northwestern Margin and adjacent area, strong arc-continent collision and orogeny occurred after the closure of the remnant ocean of Quasi-Northwestern Margin in late Carboniferous.

• 认为西北缘及邻区在晚石炭世西准噶尔残余洋消亡以后，发生了强烈的弧-陆碰撞过程与造山活动，晚石炭世-侏罗纪经历了完整的前陆盆地旋回。