Keywords the west margin of Ordos basin;the middle part of Helan Mountain;Mesozoic Era;Tectonic setting;united pattern;Rujigou;Basalt;Xiaosongshan;tectonic reverse;slip detachment;tectonic evolution;

• 鄂尔多斯盆地西缘;贺兰山中段;中生代;构造环境;统一模式;汝箕沟;玄武岩;小松山;构造反转;重力滑覆;构造演化;