| Abstrakt: |
The earthquake that occurred on September 28, 2018 with a magnitude of 7.4 Mw at Central Sulawesi, caused damage to the extraordinary areas of Donggala, Palu, Sigi, and surrounding areas. The shock caused by the earthquake-triggered landslide in Poi Village, South Dolo District, Sigi Regency, with large dimensions on the hillsides and resulted in the formation of piles of material and closed the water flow to the west of the Poi Village settlement (Geological Agency 2018). Investigations through surface geological studies and photogrammetry were carried out to identify surface geological conditions and potential landslide susceptibility in the study area. Based on the results of the geological review and analysis, it is known that the geology of the research area is composed of 3 rock units, namely the granite intrusion unit, the conglomerate unit, and the alluvial deposit unit. The photogrammetry results show that the structural activity acting on the study area is proven by the presence of two shear faults with opposite displacement directions. The landslide control factor in the study area lies in the structural conditions, slope, and geohydrological conditions as well as the level of weathering that occurs in rocks in the study area. [ABSTRACT FROM AUTHOR] |
