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    Investigation of relative tectonic activity of the northeastern part of the Fethiye Burdur fault zone (Burdur-Southwestern Anatolia) by geomorphic indices
    (TMMOB Jeoloji Mühendisleri Odası, 2019) Coşkuner, Berkant; Eren, Yaşar; Demircioğlu, Ramazan; Aksoy, Rahmi
    This study aims to investigate the tectonic activity with geomorphological indices within Burdur and Yarisli Basins in the south of Burdur. The study area consists of Jurassic-Cretaceous ophiolitic melange, Late Triassic-Early Jurassic recrystallized limestone, Late Miocene - Early Pliocene marl and clayed limestone and Late Pliocene -Early Pleistocene alluvial fan deposit. The study area covers the NE section of the Fethiye - Burdur Fault Zone (FBFZ). The FBFZ, which caused many earthquakes in historical and instrumental periods, is represented by NE-SW trending Burdur, Karakent, Karacaoren faults and NW-SE trending Karacal fault. In addition there are many small scale faults in the area. In order to determine the tectonic activity of the region, some geomorphological indices such as Mountain-Front Sinuosity (Smf), Ratio of Valley-Floor Width to Valley Height (Vf), Normalized Stream Length - Gradient Index (SLK), Asymmetry Factor (AF), Topographic Symmetry Factor (T), and Index of relative active tectonics (Iat) were calculated. The obtained data were compared with the field observations. According to the results, Smf ranges between 1.03-1.66, average Vf ranges between 0.28-10.85, average SLK ranges between 1.84-7.95 and T ranges between 0-0.6. The AF value of Burdur Basin is 60,14 whereas the Iat values of subareas cover Class-2 and Class-3. Geomorphic indices, confirming the other geological findings, show that the study area has moderate to high level tectonic activity.