Control Structure On Damage Zone and Fault Plane to Geometry Of Quartz Veins and Calcite In Muaradua Ogan Komering Ulu Selatan, South Sumatra, Indonesia

Geological mapping was carried out on the Gilas and Malau rivers in Muaradua area, South Ogan Komering Ulu Regency, Sumatra by observing presence of joints, faults, veins granite phyllite rock outcrops Tarap Formation. Research pattern geometry vein type crushing zone is focused measuring direction (trend) joints. The measurement results are then analyzed to obtain a general quartz calcite so that orientation their development can be known. method used this study form determining based classifications refer several studies, an analysis using DemNAS data determine straightness area. developed area have extensional fracture with found isolated, abutting, cutting, mutually-cutting, crosscutting. develop research relatively north-south west-east indicated fault traces deformation occurred With help joints it possible structural control plane.