Structural interpretation of buldan region in western anatolia by using magnetic and gravity data

Abstract

The western Anatolia is an extension region and many horst-graben systems were developed under this tectonic regime. The Buldan region is located in the northern part of Denizli region between Denizli and Alasehir grabens where seismic activity is observed. The subsurface structure of this area was investigated by using aeromagnetic and Bouguer gravity data. The deriv-ative based edge detection techniques; the horizontal gradient, tilt angle and Theta map were used to define the tectonic lineaments. The sediment basement relief map of the study area was en-hanced by 3D inversion of gravity data using Parker-Oldenburg algorithm. The final gravity and magnetic lineaments map of the study area is presented by the joint interpretation of the results of the edge detection process with the sediment basement relief map, the existing geology map and the topographical elevation map of the study area. The sediment thickness ranges between 0.2 km and 2.2 km and the sediment deposits thickness is 2.2 km in the northern part of Denizli basin. NW-SE trending reliefs were detected between the Alasehir and Denizli grabens in the sediment basement relief map, and NW-SE directional lineaments such as fault/fracture which are bounding basement reliefs were detected. The new lineaments are strongly compatible with the regional geo-logical trend and sediment basement relief. Based on the findings of this study, new detected gravity and magnetic lineaments will be lighten up the new research in the future studies to under-stand the tectonic structure, geothermal potential, mineralisation of the region. © 2021 Earth Science Division, Azerbaijan National Academy of Sciences.