Abstract: Upper Devonian slum p deposition is well developed in Zhashui county of southern Shanxi province and is particularly well exposed in the Shiwengzi area．The slump deposition is composed of terrigenous fine-grain clastic rocks，carbonate rocks，bog lime，siltite and boulder breccia limestone．The source area of deposits was located in the north of Shiwengzi．Formation of the slump deposition was primarily controlled by regmagenesis palaeogeographic framework as well as the source area of deposits．The widely existed unco nformable co ntact between the Early and the Late Paleozoic groups in the southern Qinling further suggests that the southern Qinling had been uplifted when the northern Qining was suffering from the uplifting in the Daledonian orogeny period．Until the Late Devonian，the southern Qinling had been under the control of regmagenesis，which was probably related to the opening of mianlue finite ocean basin．