Lineament mapping using remote sensing and correlation on surface manifestation distribution in Gunung Endut, Banten Province, Indonesia

Remote sensing has become one of the most used methods in geothermal exploration. This technology is used to detect the presence of lineaments located in the area of geothermal exploration. The lineament can be expressed in the form of ridges and valleys. These features are closely related to the existence of geological structures. Geological structures act as weak zones (permeable zones) for the fluid to come out to the surface which will provide the circulation that forms the geothermal system. The research area is geographically located in 06°35'58" S and 106°17'01" E. Overall, the area of the research is about 325 km² included 51 sub-districts in Lebak Regency, Province of Banten. This research area covers the entire area of Mount Endut and east of Mount Talaga and was included in the geological map of Leuwidamar dominated by Pleistocene Endut volcanic rocks (Qpv) which consists of volcanic breccia, lava, and tuff. The geological structures that developed in the study area are in the form of faults and folds. The data used in lineaments extraction were Digital Elevation Model derived from ASTER GDEM which has a vertical accuracy of 10-25 m. Meanwhile, the data on the existence of manifestations were obtained from the Geothermal Potential book published by the Geological Agency, Ministry of Energy and Mineral Resources. In extracting lineaments, the PCI Geomatica software was automatically used with the LINE algorithm. In the calculation of ground surface temperature, ENVI software is used together with The Law of Wien Shift. The general direction of alignments obtained is NNW-SSE. There are 5 unexpected faults related to the distribution of surface manifestations. The results of the structure interpretation in general show the relationship with the existence of surface ground temperature anomalies distribution. This is caused by the existence of a weak zone (permeable zone) as a place for the hot fluid to escape which will affect the surface temperature of the ground.