Extentional Fault Pada Daerah Compressive Tectonic Zone Sebagai Batas Cekungan Di Jawa Tengah Selatan

The extensional structure as a normal fault could be found in many places at the southern part of Java compressive tectonic regime. research area is eastern South Serayu Mountains. This boundary Mountains with Kulon Progo Tertiary volcanic In field, these lineament zones create Bogowonto river two different geological styles. influence this on dynamic and important to explained. study was conducted by measuring analyzing data lithology that developed around basins boundary. distribution rocks indicates presence structure. facies volcano cut becomes narrow west, while northward very wide. Normal striations analysis plane along line shows least stress trending west-northwest has worked North-South faults. fault-controlled vertical main compression area. They have North Northeast-South Southwest (NNE-SSW) faults westward dipping.