| Popis: |
Menoreh Hills lies within the western region of Kulon Progo Regency, Yogyakarta and the southern region of Magelang Regency, which belongs to landslide subscriptions region in nearly each wet season. An association of geological conditions, including geomorphology, lithology, and geological structures, turns into the problem of a mass movement in this area. Mostly, this area is consisting of volcanic rocks. They are breccia and lava from Kaligesing and Dukuh Formation with the rock’s physical condition is commonly weathered. The appearance of geological structures in the form of joints and faults are caused by the primary stress that has North-South direction relatively. This paper’s objective is to propose a correlation between geological structure and kinematic analysis, where it has an essential role in figuring out the potential type of slope failure. Kinematic analysis conducted using Markland methods, there are seven slopes that have failure potential of a wedge and topple type. Then these analysis result processed as a vulnerability zone of slope failure. Generally, the potential slope failures are situated at the alongside or passed by the fault strike. It proves that the geological structures have an essential role as a variable to the kinematic analysis. |
