Abstract

Indonesia is located at the confluence of three tectonic plates, namely the Australian Plate, the Eurasian Plate and the Pacific Plate. Plate movements make Indonesia traversed by a volcanic route or the Ring of Fire which results in Indonesia having a complex geological condition. Therefore, Indonesia is one of the best countries to conduct a geological mapping study. One area in Indonesia that has a good geological condition is in the area of Karanggayam Village, Karanggayam District, Kebumen Regency, and Central Java Province. The method used is primary data collection in the form of geological data searches, observations of geomorphological phenomena and processes and field data analysis. From this method, the geomorphology of the research area is divided into six geomorphological units. And the constituent lithology consists of four lithostrate rock units and 1 lithodemic, among others from old to young, namely fragmented claystone units, monomic breccias, diabase intrusions, sandstones alternating with claystones and carbonated sandstones. The geological structure in the mapping area is in the form of folds such as anticlines and synclines and faults in the form of descending, ascending and horizontally sinistral faults. Geological history that occurs in the mapping area is estimated to have occurred during the early Miocene to late Miocene and was deposited from a submarine fan environment. Geological evaluation in the mapping area is in the form of natural resource potential in the form of natural tourism mining mines, as well as geological disaster constraints in this area such as ground movement that triggers landslides.