MULTI-CHANNEL MARINE SEISMIC SURVEY AND PRELIMINARY RESULTS OFF-SHORE KARABURUN RIDGE (WESTERN SIGACIK GULF-AEGEAN SEA)

Yıl 2019, Cilt: 3 Sayı: 3, 229 - 236, 28.07.2019

Savaş Gürçay , Günay Çifçi

https://doi.org/10.26900/jsp.3.024

Öz

Sıgacık Gulf is located south of Izmir (West Anatolia), the third
crowded city of Turkey. The gulf is restricted by two important ridges on land
from west to east, Karaburun Ridge and Seferihisar Ridge, respectively. Recent
geological and geophysical studies suggested that these ridges are dominated by
active strike-slip faults both on land and off-shore. This manuscript presents
the results of the high resolution multi-channel seismic reflection survey
which carried out onboard K. Piri Reis, research vessel of Dokuz Eylül
University, off-shore Karaburun Ridge (Aegean Sea) and surroundings in
August-2005. Two main seismic units, lower unit and upper unit, were determined
on seismic sections besides the active faults, buried faults and buried folds.

Anahtar Kelimeler

Multi-channel seismic reflection, Karaburun Ridge, active faults

Kaynakça

• [1] BENETATOS, C., KIRATZI, A., GANAS, A., ZIAZIA, M., PLESSA, A. and DRAKATOS, G. (2006). Strike Slip Motions in the Gulf of Sığacık (western Turkey): Properties of the 17 October 2005 earthquake seismic sequence. Tectonophysics, 426, 263-279
• [2] DEWEY, J.F. and ŞENGÖR, A.M.C. (1979). Aegean and surrounding regions. Complex multiplate and continuum tectonics in a convergent zone. Geological Society of America Bulletin, 90, 84–92.
• [3] EMRE, Ö. and BARKA, A. (2000). Active Faults between Gediz Graben and Aegean Sea (İzmir Region). BADSEM 2000 Congress, İzmir.
• [4] EMRE, Ö., ÖZALP, S., DOĞAN, A., ÖZAKSOY, V., YILDIRIM, C. and GÖKTAŞ, F. (2005). İzmir yakın çevresinin diri fayları ve deprem potansiyelleri, Jeoloji Etütleri Dairesi, Maden Tetkik ve Arama, Rapor No: 10754.
• [5] GENÇ, C., ALTUNKAYNAK, Ş., KARACIK, Z., YAZMAN, M. and YILMAZ, Y. (2001). The Çubukludağ graben, south of İzmir: its tectonic significance in the Neogene geological evolution of the western Anatolia, Geodinamica Acta, 14, 45–55.
• [6] MCKENZIE, D.P. (1972). Active tectonics of the Mediterranean region. Geophysics Journal Royal Astronomical Society, 30, 109–185.
• [7] OCAKOĞLU, N., DEMIRBAĞ, E. and KUŞÇU, I. (2004). Neotectonic structures in the area offshore of Alaçati, Doğanbey and Kuşadasi (western Turkey): evidence of strike-slip faulting in the Aegean extensional province. Tectonophysics, 391, 67- 83.
• [8] OCAKOĞLU, N., DEMIRBAĞ, E. and KUŞÇU, I. (2005). Neotectonic structures in Izmir Gulf and surrounding regions (western Turkey): Evidences of strike-slip faulting with compression in the Aegean extensional regime. Marine Geology, 219, 155-171.
• [9] PATTON S. (1992). Active normal faulting, drainage patterns and sedimentation in southwestern Turkey. Journal of Geological Society London 149, 1031–1044.
• [10] ŞAROĞLU F., EMRE Ö. and KUŞÇU İ. (1992). Active fault map of Turkey, scale 1:2.000.000.000. General Directorate of Mineral Research and Exploration.
• [11] TAN, O. and TAYMAZ, T. (2001). Source parameters of November 6, 1992 Doganbey (İzmir) earthquake (Mw=6.0) obtained from inversion of teleseismic body-waveforms. 4th International Turkish Geology Symposium, 171.
• [12] TAN, O. and TAYMAZ, T. (2003). Seismotectonics of Karaburun Peninsula and Kusadası Gulf: source parameters of April 2, 1996 Kusadası Gulf and April 10, 2003 Seferihisar (İzmir) earthquakes. International Workshop on the North Anatolian, East Anatolian and Dead Sea Fault Systems: Recent Progress in Tectonics and Paleoseismology and Field Training Course in Paleoseismology, Ankara, Middle East Technical University, 147.