Using non-derivative filters for the tectonic implcations: A case study in simav graben in western turkey

Gravity data compiled for Simav Graben and its surrounding area in western Turkey were reprocessed and reinterpreted by using a type of standard deviation filter and Euler deconvolution methods. Results from the interpretation of gravity data and seismological studies show presences of new intrusive structures in the vicinity of Simav Graben. A prominent intrusion is located in the NE margin of the graben and has a thickness of 12-15 km at 2.5-3 km below the surface. Numerous earthquakes recorded in the eastern part of the graben are associated with this intrusions. Our multi-disciplinary study using gravity and seismological data clearly delineate the Simav Graben, characteristics of the Simav Fault, and identified intrusion was named as Naşa. Seismicity within the same tectonic frame are also well correlated with the intrusive structures identified on the filtered gravity anomalies. © (2019) by Environmental and Engineering Geophysical Society All rights reserved.