The Taigu fault zone is one of the major 12 boundary active faults of the Shanxi fault depression system, located on the eastern boundary of the Jinzhong basin.
最新调查结果表明 ,太谷断裂断错山前冲沟Ⅰ级阶地以及在黄土台地前缘形成断坎 ,在地表及探槽中多处见到断裂断错全新世地层 ,断裂的最新活动是 130 3年洪洞 8级地震 ,活动方式为右旋走滑兼正倾滑活动 。