Determination of Volcanic Zone Distribution Based on Petrographic Analysis in Rumpin Area, West Java

—The increasing population growth leads to higher demand for building materials, on of them is andesite, whose demand in Indonesia is rising. The Rumpin area has significant andesite potential, and its quality is quite good. This makes Rumpin an important consideration due to its potential and resources, as well as its strategic location bordering South Tangerang City, Banten. Therefore, the management of natural resources, the environment, and regional development activities must focus on preserving their functions and capabilities. Consequently, development activities will not trigger disasters, and development sites must be located in areas that are safe from disasters. This research was conducted to determine the volcanic distribution zone in the research area using geological mapping and petrographic methods. The necessary parameters include slope, rock samples, and land use, as well as supporting field data in the form of morphology photos, slope angles, and lithology. The results of this study provide information on the zonation of volcanic or andesite distribution in the Rumpin area.