Geological and Electrical Resistivity Tomography surveys applied to model the tectonic environment of the Kastelli-Kissamou basin, northwestern Crete, Greece

摘要

Geological field survey and geophysical 2D electrical resistivity tomography (ERT) survey were conducted in Kastelli-Kissamou area of northwestern Crete, to model the tectonic environment. The area is located within the outer forearc of the Hellenic subduction zone, a seismogenic structure most notably associated with the great AD365 earthquake that caused widespread damage in the eastern Mediterranean. Geological evidence from the Kastelli-Kissamou region reveals coastal uplift of+6.8 m, probably in association with the AD365 earthquake and numerous active faults, dominantly occupying a sector between NNE and NNW. Eight 2D Electrical resistivity tomography profiles were conducted at several sites in the study area. Seven of the eight ERT profiles intersect possibly active faults. Electrical resistivity survey was correlated with geological field investigations and indicated the continuation of previously mapped faults as well as revealing previously unreported faults.