GEOLOGICAL STRUCTURES RELATIONSHIP OF JOINT, FAULT AND FOLD IN THE NORTH SERAYU MOUNTAINS IN THE TRAMBRA RIVER AREA, PURBALINGGA REGENCY, CENTRAL JAVA

Abstrak

The Tambra River as a research location is in the mountainous area of North Serayu, Purbalingga Regency, Central Java Province. The research was conducted to determine the relationship between various joint, fault and fold geological structures in the study area. The joint field data is in the form of strike and dip measurements of the joint plane. Fault field data in the form of strike and dip of fault plane, pitch angle, direction of pitch and type of fault movement. Fold data is carried out by measuring the layers of sedimentary rock layers that form anticline or syncline folds by measuring the strike and dip of the bedding plane. The results of the formation stress analysis show that the tectonic stress trending north-south forms rock fractures/joints, faults and folds in the study area.