Geology and tsunami exposure of Pandeglang, Banten, Indonesia

As the study area is prone to geological hazard phenomena geological information of Pandeglang, Banten should be updated frequently with the latest data and findings. In geology world, geological map is very crucial to researchers as it contain various geological data such as stratigraphy, structure, features and rock unit. The study area bounded by coordinate latitude of S 06°19'06.01" to S 06°21'48.60" and longitude of E 105°49'06.17" to E 105°51'48.70". This research aims to provide an updated geological map of research area with scale 1:25000 and to produce tsunami exposure map with complete classification of tsunami exposure in Pandeglang, Banten. In order to generate geological map, exposure map and other thematic maps geological mapping is conducted. During field studies, geological data such as geomorphology, lithology, tsunami exposure and others been collected along with sampling and traversing. From the analysis and interpretation made, the study area is primarily composed of two lithologies which are Upper Banten Tuff and Alluvium. Sandstone fragment that found at the river is believed belong to Bojongmanik Formation. Three different types of exposure zone due to recent tsunami are constructed. Secondary data shows run up distance and flow depth of the tsunami are 274 m and 390 m respectively. Pandeglang is prone area to tsunami and other geological phenomena due to its geological position.