Details of the abstract
Title of paper | Investigation of Deep Structure of Sultandağı Fault by Magnetotelluric, Gravity, GNSS, and Tectonic studies; First Results |
List of authors | ,Özyıldırım Ö., Demirci İ., Özkaymak Ç., Bektaş Ö., Başaran C., Tiryakioğlu İ, Özcan D.M., Yıldız A. |
Affiliation(s) |
Afyon Kocatepe University, Geothermal and Mineral Resources Application and Research Center Ankara University, Faculty of Engineering, Department of Geophysical Engineering Afyon Kocatepe University, Faculty of Engineering, Department of Geological Engineering Cumhuriyet University, Faculty of Engineering, Department of Geophysical Engineering Afyon Kocatepe University, Faculty of Engineering, Department of Map Engineering Afyon Kocatepe University, Graduate School of Natural and Applied Sciences Afyon Kocatepe University, Faculty of Engineering, Department of Geological Engineering |
Summary | Afyon-Akşehir Graben is one of the most seismically active neotectonic structures in Anatolia. There are previous scientific studies on the surface geometries, geomorphology, kinematics, and active tectonic features of the fault segments of the Sultandağı Fault, which is the most seismically active main edge fault of the graben. However, studies on the geometries and depths of these faults are very few at the crustal-scale. The devastating earthquakes on the Sultandağı Fault in recent years show that segments of this fault are active, the seismogenic zone has reached 15 kilometers, and the geometry of these faults should be investigated in detail at the crustal-scale by geophysical, geological and geodetic methods. The first results of the main project, which includes developing a three-dimensional joint inversion algorithm for Magnetotelluric and Gravity data, are described in this study. In the study, the magnetotelluric data measured along the lines selected perpendicular to the main faults in the part covering the Sultandağı fault, which is the most important seismogenic belt of the region, were solved with the two-dimensional inversion algorithm and two-dimensional resistivity models were obtained. In addition, surface geology was used to analyze the active tectonic features of the fault segments on the Sultandağı Fault, and GNSS-based geodetic measurements were made to monitor the current tectonic activities of the segments. Preliminary findings have shown that the NW-SE trending and NE dipping Sultandağı Fault, which is a dip-slip normal fault, was formed between Sultandağı and Ilgın districts under NE-SW extensional forces. It also indicates that there are synthetic and antithetic fault branches extending approximately parallel to the Sultandağı Fault in the graben and that the fault has a depth of at least 10 km with an average angle of 70°. |
Session Keyword | 4.0 Tectonics, Magmatism, Geodynamics |
File upload |
4.0_investigation_of_deep_str_ozyildirim.pdf
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