| Title | Structural Geology Analysis Using Remote Sensing Method and Its Correlation to Geothermal Occurence at Lebak Regency, Banten |
|---|---|
| Authors | Rifqi Alfadhillah Sentosa, Hasbi Fikru Syabi, Iyan Haryanto |
| Year | 2017 |
| Conference | Indonesian Geothermal Association Conference |
| Keywords | Geothermal, Structural Geology Analysis, Surface Manifestation, Lineament Density, Bayah |
| Abstract | Research area is located in Cibeber and Malingping District of Lebak Regency, Banten Province. The research location is located approximately 80 kilometers southwest of Jakarta. This area has a complex geological structure, as well as found many intrusive and metamorphic rocks. In this research area, geothermal manifestations were found in the form of four hot springs i.e. three Pamancalan hotsprings in Cibeber District, and Citando hotspring in Malingping District. The method used is geological structure analysis of research area using remote sensing on ASTER-GDEM satellite imagery. Structural analysis methods performed in the form of lineament delineation, determination of lineament density and major trends, and application of wrench system model. The results of structural analysis will be correlated with the existense of geothermal manifestations with the aim of identifying the most influential structural patterns as the pathway for geothermal fluid to reach surface in the study area. Structural analysis of study area shows major trends developed in study area are NS and EW trends. The result of delineation of lineaments is in the form of lineament density map which shows the distribution of high value density that is almost evenly distributed in all area of research. The study area also indicates compatibility with the concept of wrench fault and its structure model. Pamancalan hot springs are associated with high value of lineaments density, which are 3600-4400 m/km2, associated with an NS oriented lineament and also associated with primary right lateral wrench in the model of the Wrench Fault model. Citando hot springs are associated with a very high density area of lineament density value, which is over 4800 m/km2. These springs are also associated with directional tendencies of NS and structures of the secondary left lateral wrench. |