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Journals / Maden Tetkik ve Arama Dergisi / 2026 / Cilt: 180 Sayı: 180

Surface geometry, segmentation and kinematic features of Dodurga Fault, Eskişehir Fault Zone, NW Anatolia

İsmet Elma(Eskişehir Osmangazi University, Graduate School of Natural and Applied Sciences, Department of Geological Engineering, Eskişehir,)0000-0002-8220-5178
Volkan Karabacak(Eskişehir Osmangazi University, Faculty of Engineering and Architecture, Geological Engineering, Eskişehir, Türkiye)
Çağlar Özkaymak(Afyon Kocatepe University, Faculty of Engineering, Geological Engineering, Afyonkarahisar, Türkiye)0000-0002-0377-1324
Ökmen Sümer(Dokuz Eylül University, Faculty of Engineering, Geological Engineering, İzmir, Türkiye)0000-0003-3168-8728
Doğukan Mert Özcan(Afyon Kocatepe University, Graduate School of Natural and Applied Sciences, Department of Geological Engineering, Afyonkarahisar, Türkiye)0000-0002-2693-0789
Pages
144–161
Publication Date
2026-08-25
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

If both segments rupture together, the Dodurga Fault could potentially generate an earthquake of Mw 7.16.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The Dodurga Fault is an active right-lateral strike-slip fault, approximately 63 km long, striking NW–SE in northwestern Anatolia.
📊
Key Findings & Data:Based on 1:25,000-scale active fault mapping, the fault is subdivided into two principal geometric segments.
💡
Conclusion & Impact:If both segments rupture together, the Dodurga Fault could potentially generate an earthquake of Mw 7.16.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Eskişehir Fault Zone · Dodurga Fault · Holocene fault

Abstract

The Dodurga Fault is an active right-lateral strike-slip fault, approximately 63 km long, striking NW–SE in northwestern Anatolia. Based on 1:25,000-scale active fault mapping, the fault is subdivided into two principal geometric segments. Segment 1 is approximately 16 km long and extends from Sulhiye in the west to Erikli in the east, whereas Segment 2 is 47 km long and is characterized by a right-stepping geometry and a 10°–15° southeastern deflection. Geological and geomorphological observations, together with kinematic analyses, indicate that the fault is dominantly right-lateral strike-slip in character. Stream channels offset by up to several kilometers along the fault trace support its long-term activity, and fault-plane kinematic indicators independently confirm dextral motion. Paleostress analyses of the kinematic data indicate that the recent deformation phase along the Dodurga Fault is governed by approximately N–S contraction and E–W extension. Empirical scaling relationships suggest that Segment 1 and Segment 2 are capable of generating earthquakes of Mw 6.47 and Mw 6.97, respectively. If both segments rupture together, the Dodurga Fault could potentially generate an earthquake of Mw 7.16.

🔖

Cite This Article

Elma, İ., Karabacak, V., Özkaymak, Ç., Sümer, Ö., Özcan, D. M., *, İ. E. (2026). Surface geometry, segmentation and kinematic features of Dodurga Fault, Eskişehir Fault Zone, NW Anatolia. Maden Tetkik ve Arama Dergisi, Cilt: 180 Sayı: 180, 144–161. https://doi.org/10.19111/bulletinofmre.1962940

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References (51)

  1. Akgün, E., Özden, S. 2019. Plio-Quaternary stress states along the Kütahya Fault and surroundings, NW Turkey. Turkish Journal of Earth Sciences 28 (5),671-686.
  2. Aktuğ, B., Parmaksız, E., Kurt, M., Lenk, O., Kılıçoğlu, A.,Gürdal, M.A., Özdemir, S. 2013. Deformation of Central Anatolia: GPS Implications. Journal of Geodynamics 67, 78-96.
  3. Alçiçek, M. C., Karabacak, V., Okay, A. I., Kaya, T. T. 2023. İnegöl Havzası’nın Stratigrafisi ve Tektono-Sedimanter Gelişimi (KB Anadolu), (Proje no: 119Y208). TÜBİTAK 1001 Projesi Final Raporu.
  4. Angelier, J. 1990. Inversion of Field Data in Fault Tectonics to Obtain the Regional Stress—III. A New Rapid Direct Inversion Method by Analytical Means. Geophysical Journal International 103, 363-376.
  5. Angelier, J., Dumont, J.F., Karamanderesi, İ.H., Poisson, A., Şimşek, Ş., Uysal, Ş. 1981. Analyses of fault mechanisms and expansion of southwestern Anatolia since the Late Miocene. Tectonophysics 79, 11-19.
  6. Bozkurt, E. 2001. Neotectonics of Turkey-a synthesis.Geodinamica Acta 14, 3-30.
  7. Bozkurt, E., Sözbilir, H. 2004. Tectonic evolution of the Gediz Graben: field evidence for an episodic, two-stage extension in western Turkey. Geological Magazine 141, 63-79.
  8. Bozkurt, E., Sözbilir, H. 2006. Evolution of the large-scale active Manisa Fault, southwest Turkey: implications on fault development and regional tectonics. Geodinamica Acta 19, 427-453.
  9. Çakır, E., Uzel, B. 2023. Strain partitioning between extensional and transcurrent systems: Field relationship and kinematic of the North Anatolian Fault Zone in the Bursa Basin, NW Turkey. Journal of Asian Earth Sciences 251. 105669.
  10. Duman, T. Y., Çan, T., Emre, Ö., Kadirioğlu, F.T., Başarır Baştürk, N., Kılıç, T., Arslan, S., Özalp, S., Kartal, R.F., Kalafat, D., Karakaya, F., Eroğlu Azak, T., Özel, N.M., Ergintav, S., Akkar, S., Altınok, Y., Tekin, S., Cingöz, A., Kurt, A.İ. 2017. Türkiye Sismotektonik Haritası. Maden Tetkik ve Arama Genel Müdürlüğü, Özel Yayınlar Serisi-34, Ankara, Türkiye.
  11. Duman, T. Y., Çan, T., Emre, Ö., Kadirioğlu, F. T., Başarır Baştürk, N., Kılıç, T., Arslan, S., Özalp, S., Kartal,R. F., Kalafat, D., Karakaya, F., Eroğlu Azak T., Özel, N. M. Ergintav, S., Akkar, S., Altınok, Y., Tekin, S., Cingöz, A., Kurt, A. İ. 2018. Seismotectonics Database of Turkey. Bulletin of Earthquake Engineering, 16(8), 3277−3316.
  12. Elma, İ., Özçelik, B., Karabacak, V., Özkaymak, Ç., Sümer, Ö. 2024. Eskişehir Fayının İnönü-Oklubalı Segmentine Ait İlk Paleosismolojik Bulgular. Türk Deprem Araştırma Dergisi 6(2), 349-368.
  13. Elma, İ., Safarov, M.A., Karabacak, V., Özkaymak, Ç., Sümer, Ö. 2025a. Paleosismolojik Veriler Işığında Eskişehir Fayı’nın Batı Segmentinin Deprem Davranışı / Earthquake Behaviour of the Western Segment of the Eskişehir Fault in Light of Paleoseismological Data. Türkiye Jeoloji Bülteni 68(3), 333-356.
  14. Elma, İ., Safarov, M. A., Karabacak, V., Özkaymak, Ç. Sümer, Ö. 2025b. Eskişehir Fayı’nın Uzun Dönem Kayma Hızı ve Paleosismolojisi. 77.Türkiye Jeoloji Kurultayı, Bildiri Özleri Kitabı, 334, 14-18 Nisan 2025, Maden Tetkik ve Arama Genel Müdürlüğü, Ankara.
  15. Elma, İ., Karabacak, V., Özkaymak, Ç., Sümer, Ö., Özcan,D. M. 2025c. Dodurga Fayı’nın Fay Geometrisi ve Segmentasyonu, Eskişehir Fay Zonu, KB Anadolu. ATAG 28. Çalıştayı, Bildiri Özleri Kitabı, 56-57, 5-7 Kasım 2025, Aydın, Türkiye
  16. Emre, Ö., Duman, T. Y., Özalp, S., Elmacı, H., Olgun, Ş., Şaroğlu, F. 2013. 1/250.000 ölçekli Türkiye Diri Fay Haritası. Maden Tetkik ve Arama Genel Müdürlüğü Özel Yayınlar Serisi Ankara, Türkiye.
  17. Emre, Ö., Duman, T. Y., Özalp, S., Şaroğlu, F., Olgun, Ş., Elmacı, H., Çan, T. 2018. Active Fault Database of Turkey. Bulletin of Earthquake Engineering 16, 3229–3275.
  18. Gözler, M. Z., Cevher, F., Küçükayman, A. 1985. Eskişehir civarının jeolojisi ve sıcak su kaynakları. Türkiye Jeoloji Kurumu Bülteni 21, 39-54.
  19. Gürer, Ö. F., Kaymakçı, N., Çakır, Ş., Özburan, M. 2003. Neotectonics of the southeast Marmara region, NW Anatolia, Turkey. Journal of Asian Earth Sciences 21, 1041-1051.
  20. Hancock, P. L., Barka, A. A. 1987. Kinematic indicators on active normal faults in western Turkey. Journal of Structural Geology 9, 419427.
  21. Heidbach, O., Custodio, S., Kingdon, A., Mariucci, M.T., Montone, P., Müller, B., Pierdominici, S., Rajabi, M., Reinecker, J., Reiter, K., Tingay, M., Williams, J., Ziegler, M. 2016. Stress Map of the Mediterranean and Central Europe 2016. GFZ Data Services.
  22. Karabacak, V., Sançar, T. 2025. Bursa İli Yerleşim Alanlarının Deprem Tehlikesi: Ulubat, Bursa ve İnegöl Diri Faylarının Paleosismolojik Özellikleri/ Earthquake Hazard in Urban Areas of Bursa Province: Paleosismological Properties of the Ulubat, Bursa and İnegöl Active Faults. Türkiye Jeoloji Bülteni 68(2), 151-176.
  23. Karabacak, V., Sançar, T., Yıldırım, G., Uysal, T. 2022. When did the North Anatolian fault reach southern Marmara, Turkey, Geology 50, 432-436.
  24. Karabacak, V., Özkaymak, Ç., Sümer, Ö. 2024. Eskişehir Fayı ve Dodurga Fayının Paleosismolojik Özelliklerinin Belirlenmesi, 123G010 no.lu TÜBİTAK Projesi 1. Gelişme Raporu.
  25. Karabacak, V., Elma, İ., Doğan, G.G., Özkaymak, Ç., Sümer, Ö., Yayan, K. 2025. Dodurga Fayı deprem tehlikesi ve Eskişehir ili için olası afet senaryoları: Kentsel dirençlilik anlamında mühendislik yapılarının mekânsal planlamasına bir örnek. MTA Yerbilimleri ve Madencilik Dergisi 8, 1-12
  26. Küçükayman, A., Genç, S., Gök, L., Kar, H., Ateş, M. 1987. Bozüyük-Tavşanlı- Kütahya Arasının Jeolojisi. Maden Tetkik Arama Genel Müdürlügü, Rapor No: 8356.
  27. Le Pichon, X., Angelier, J. 1979. The Hellenic arc and trench system: a key to the neotectonic evolution of the eastern Mediterranean area. Tectonophysics 60, 1-42.
  28. McKenzie, D. 1972. Active Tectonics of Mediterranean Region, Geophys. J. R. Astro. Soc. 30, 109-185.
  29. Okay, A. I. 1984. Distribution and characteristics of the northwest Turkish blueschists. In: The Geological Evolution of the Eastern Mediterranean (ed. J.E. Dixon ve A.H.F. Robertson). Geological Society Special Publication, 17, 455-466.
  30. Okay, A. I. 2011. Tavşanlı Zonu: Anatolid-Torid Blok’nun Dalma-Batmaya uğramış kuzey ucu. Maden Tetkik ve Arama Genel Müdürlüğü Dergisi 142, 195-226, 2022.
  31. Özden, S., Gündoğdu, E., Bekler, T. 2015. Interactions between Eurasian/African and Arabian plates: Eskişehir Fault, NW Turkey. Journal of African Earth Sciences 111, 349-362.
  32. Özkaymak, Ç., Sözbilir, H. 2008. Stratigraphic and Structural Evidence for Fault Reactivation: The Active Manisa Fault Zone, Western Anatolia. Turkish Journal of Earth Sciences 17 (3), 615-635.
  33. Özkaymak, Ç., Sözbilir, H., Uzel, B., Akyüz, H. S. 2011. Geological and Palaeoseismological Evidence for Late Pleistocene−Holocene Activity on the Manisa Fault Zone, Western Anatolia. Turkish Journal of Earth Sciences 20 (4), 449-474.
  34. Pavlides, S., Caputo, R. 2004. Magnitude versus faults’surface parameters: Quantitative relationships from the Aegean. Tectonophysics 380, 159- 188.
  35. Reilinger, R., McClusky, S., Vernant, P., Lawrence, S., Ergintav, S., Çakmak, R., Özener, H., Kadirov, F., Guliev, I., Stepanyan, R., Nadariya, M., Hahubia, G., Mahmoud, S., Sakr, K., ArRajehi, A., Paradissis, D., Al-Aydrus, A., Prilepin, M., Guseva, T., Evren, E., Dmitrotsa, A., Filikov, S. V., Gomez, F., Al-Ghazzi, R., Karam, G. 2006. GPS constraints on continental deformation in the Africa-Arabia-Eurasia continental collision zone and implications for the dynamics of plate interactions. Journal of Geophysical Research 111, B05411.
  36. Selçuk, A. S., Gökten, Y. E., Aktuğ, B. 2016. The Stress State of The Region around Inonu-Eskisehir active fault system (Turkey); kinematic analysis accompanied with GPS Data. Journal of Indian Geophysical Union 20(6), 527-535.
  37. Servais, M. 1982. Collision et suture téthysienne en Anatolie Centrale, étude structurale et métamorphique (HP-BT) de la zone nord Kütahya. Ph.D. Thesis, Universite de Paris-Sud, Centre d’Orsay, 374.
  38. Seyitoğlu, G., Scott, B. 1991. Late Cenozoic crustal extension and basin formation in west Turkey. Geological Magazine 128, 155-166.
  39. Seyitoğlu, G., Ecevitoğlu, G. B., Kaypak, B., Güney, Y., Tün, M., Esat, K., Avdan, U., Temel, A., Çabuk, A., Telsiz, S., Uyar Aldaş, G. G. 2015. Determining the main strand of the Eskişehir strike-slip fault zone using subsidiary structures and seismicity: a hypothesis tested by seismic reflection studies. Turkish Journal Earth Science 24, 1-20.
  40. Seyitoğlu, G., Aktuğ, B., Esat, K., Kaypak, B. 2022. Neotectonics of Turkey (Türkiye) and surrounding regions: a new perspective with block modelling. Geologica Acta 20(4), 1-21.
  41. Sözbilir, H. 2001. Geometry of macroscopic structures with their relations to the extensional tectonics: field evidence from the Gediz detachment, Western Turkey. Turkish Journal of Earth Sciences 10, 51-67.
  42. Sözbilir, H. 2005. Oligo-Miocene extension in the Lycian orogen: evidence from the Lycian molasse basin, SW Turkey. Geodinamica Acta 18, 257-284.
  43. Şaroğlu, F., Emre, Ö., Boray, A. 1987. Türkiye’nin Diri Fayları ve Depremsellikleri. Maden Tetkik ve Arama Genel Müdürlüğü, Ankara.
  44. Şaroğlu, F., Emre, Ö., Doğan, A., Yıldırım, C. Ç. 2005. Eskişehir Fay Zonu ve Deprem Potansiyeli. Eskişehir Fay Zonu ve İlişkili Sistemlerin Depremselliği Çalıştayı, Osmangazi Üniversitesi, 28-30 Nisan 2005, Eskişehir, Bildiri Özleri Kitapçığı.
  45. Sümer, Ö., Karabacak, V. 2024. Archaeoseismology: Earthquake traces studies in ancient settlements; a chronological evaluation from the World focusing on Türkiye. Bulletin of the Mineral Research and Exploration 174, 99-128.
  46. Şengör, A. M. C. 1980. Türkiye’nin Neotektoniğinin Esasları: TJK Konferanslar Dizisi, 2,40. Ankara.
  47. Şengör, A. M. C., Kidd, W. S. F. 1979. Post-collisional tectonics of the Turkish-Iranian plateau and a comparison with Tibet. Tectonophysics 55, 361-376.
  48. Şengör, A. M. C., Yılmaz, Y. 1981. Tethyan evolution of Turkey: A plate tectonic approach. Tectonophysics 75, 181-241.
  49. Şengör, A. M. C., Görür, N., Şaroğlu, F. 1985. Strike-Slip Faulting and Related Basin Formation in Zones of Tectonic Escape: Turkey as a case Study: Strike-Slip Deformation. Basin Formation, and Sedimentation. Edited by Biddle, K.T, and Mineralogists Special Publication, 37, 227-264.
  50. Uzel, B., Sözbilir, H. 2008. A First Record of a Strike-slip Basin in Western Anatolia and Its Tectonic Implication: The Cumaovası Basin. Turkish Journal of Earth Sciences 17 (3), 559-591.
  51. Wells, D. L., Coppersmith, K. J. 1994. New empirical relationships among magnitude, rupture length, rupture width, rupture area, and surface displacement, Bulletin of the Seismological Society of America 84(4), 974-1002.