Paleoseismological investigations along Joggers Park Fault, Port Blair, South Andaman: Implications towards delineation of blind thrusting and related crustal deformation through ground penetrating radar (GPR) and electrical resistivity techniques (ERT and VES)

摘要: A comprehensive paleoseismological investigations was carried out along Joggers Park Fault (striking NW-SE) reveals pervasive traces of active compressional tectonics (blind thrusting) and shallow-surface recent tectonic signatures the fault. The geometry trends in deformation blind zone (shallow-subsurface stratigraphy) were examined with GPR electrical resistivity tomography (ERT) vertical sounding (VES), strongly demonstrates severe (persistent style) from Quaternary to Holocene times a compressive stress regime. surface manifestation (topographic expression) fault can be marked as hanging wall uplift visually observed exposed sections at nearly half kilometer distance table land form well-defined disconnected high angle thrust scarp (reverse fault). reverse kinematically intimately linked underlying provides adduced evidence evaluate strike displacement profiles (displacement length relationship) In addition, deformed stacked colluvial wedge below represents powerful basis calibrate long term slip rates