Uludağ Extensional Metamorphic Core Complex: Preliminary Field Observations

Yıl 2022, , 49 - 61, 05.12.2022

Gürol Seyitoğlu Korhan Esat

https://doi.org/10.19111/bulletinofmre.1029034

Öz

In the northern margin of Uludağ massif in northwest Anatolia, the Bursa Detachment having top-to-the north, northeast normal sense of shear separates the lower plate high-grade metamorphic rocks of Series-A (Uludağ Group) from the upper plate low-grade metamorphic rocks of Series-B (Karakaya Complex). The deeper section of Uludağ massif is represented by the Oligocene metagranites at the southern parts of the massif that is exposed due to the youngest high-angle Soğukpınar normal fault. The massif is a typical extensional metamorphic core complex similar to the counterparts in west and northwest Anatolia such as the Menderes, Kazdağ, and Çataldağ core complexes due to close timing of exhumation and a similar sense of shearing.

Anahtar Kelimeler

Uludağ Core Complex, North Anatolian Fault, Eskişehir Fault, Southern Marmara

Kaynakça

• Aksoy, R. 1996. Marmara Adası ve Kapıdağı Yarımadası’nın mesoskopik tektonik özellikleri. Turkish Journal of Earth Sciences 5, 187-195.
• Allmendinger, R. W., Cardozo, N. C., Fisher, D. 2012. Structural Geology Algorithms: Vectors and Tensors. Cambridge University Press, 289.
• Barka, A. 1992. The North Anatolian Fault Zone. Annales Tectonicae 6, 164-195.
• Barka, A., Kadinsky Cade, K. 1988. Strike-slip fault geometry in Turkey and its influence on earthquake activity. Tectonics 7, 663-684.
• Bozkurt, E., Park, R. G. 1994. Southern Menderes massif: an incipient metamorphic core complex in Western Anatolia, Turkey. Journal of the Geological Society of London 151, 213-216.
• Emre, Ö., Doğan, A., Duman, T. Y., Özalp, S. 2011a. Bursa (NK 35-12) quadrangle, active fault map series of Turkey. General Directorate of Mineral Research and Exploration, Ankara-Turkey, Serial number: 9, Scale: 1/250.000.
• Emre, Ö., Duman, T. Y., Özalp, S. 2011b. Kütahya (NJ35-4) quadrangle, active fault map series of Turkey. General Directorate of Mineral Research and Exploration, Ankara-Turkey, Serial number: 10, Scale: 1/250,000.
• Emre, Ö., Duman, T. Y., Özalp, S., Elmacı, H., Olgun, Ş., Şaroğlu, F. 2013. Active fault map of Turkey with an explanatory text 1:1.250.000 scale. General Directorate of Mineral Research and Exploration Special Publication Series 30, Ankara, Turkey. ISBN: 978-605-5310-56-1.
• 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.
• Esat, K., Kaypak, B., Işık, V., Ecevitoğlu, B., Seyitoğlu, G. 2016. The Ilıca branch of the southeastern Eskişehir Fault Zone: an active right-lateral strike-slip structure in central Anatolia, Turkey. Bulletin of the Mineral Research and Exploration 152, 25-37.
• Imbach, T. 1997. Geology of Mount Uludağ with emphasis on the genesis of the Bursa thermal waters, Northwest Anatolia, Turkey. Schindler, C., Pfister, M. (Ed). Active Tectonics of Northwestern Anatolia- the Marmara Poly-Project. vdf Hochschulverlag AG an der ETH Zurich, 239-266. ISBN 3-7281-2425-7.
• Kamacı, Ö., Altunkaynak, Ş. 2019. Cooling and deformation history of the Çataldağ Metamorphic Core Complex (NW, Turkey). Journal of Asian Earth Sciences 172, 279-291.
• Kaymakçı, N. 1991. Neotectonic evolution of the İnegöl (Bursa) Basin. MSc Thesis, Middle East Technical University, 73, Ankara (unpublished).
• Ketin, İ. 1947. Uludağ masifinin tektoniği hakkında. Türkiye Jeoloji Kurumu Bülteni 1, 60-88.
• Ketin, İ. 1984. Türkiye’nin bindirmeli-naplı yapısında yeni gelişmeler ve bir örnek: Uludağ Masifi. Ketin Sempozyumu, 19-36.
• Kurt, F. S., Işık, V., Seyitoğlu, G. 2010. Alternative Cenozoic exhumation history of the Kazdağ Core Complex, Western Turkey. Tectonic Crossroads: Evolving Orogens Of Eurasia-Africa-Arabia Abstracts with Programs 36(3), Ankara, 70.
• Marrett, R., Allmendinger, R. W. 1990. Kinematic analysis of fault-slip data. Journal of Structural Geology 12, 973-986.
• Okay, A. I., Demirbağ, E., Kurt, H., Okay, N., Kuşçu, İ. 1999. An active, deep marine strike-slip basin along the North Anatolian fault in Turkey. Tectonics 18, 129-147.
• Okay, A. I., Satır, M., Zattin, M., Cavazza, W., Topuz, G. 2008. An Oligocene ductile strike-slip shear zone: the Uludağ massif, northwestern Turkey - Implications for the westward translation of Anatolia. Bulletin of the Geological Society of America 120, 893-911.
• Passchier, C. W., Trouw, R. A. J. 2005. Microtectonics. Springer, ISBN-10: 3-540-64003-7.
• Ring, U., Johnson, C., Hetzel, R., Gessner, K. 2003. Tectonic denudation of a late Cretaceous-Tertiary collisional belt: regionally symmetric cooling patterns and their relation to extensional faults in the Anatolide belt of Western Turkey. Geological Magazine 140, 421-441.
• Selim, H. H., Tüysüz, O. 2013. The Bursa-Gönen depression, NW Turkey: a complex basin developed on the North Anatolian Fault. Geological Magazine 150, 801-821.
• Seyitoğlu, G., Işık, V. 2015. Late Cenozoic extensional tectonics in Western Anatolia: exhumation of the Menderes core complex and formation of related basins. Bulletin of the Mineral Research and Exploration 151, 49-109.
• Seyitoğlu, G., Işık, V., Çemen, I. 2004. Complete Tertiary exhumation history of the Menderes Massif, Western Turkey: an alternative working hypothesis. Terra Nova 16, 358-364.
• Seyitoğlu, G., Ecevitoğlu, 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 of Earth Sciences 24, 1-20.
• Seyitoğlu, G., Kaypak, B., Aktuğ, B., Gürbüz, E., Esat, K., Gürbüz, A. 2016. A hypothesis for the alternative southern branch of the North Anatolian Fault Zone, Northwest Turkey. Geological Bulletin of Turkey 59, 115-130.
• Seyitoğlu, G., Esat, K., Tün, M., Oruç, B., Pekşen, E., Mutlu, S., Balkan, E., Pekkan, E., Çetinkaya, D., Karaarslan, T., Kaypak, B., Çıvgın, B., Aktuğ, B., Kaya, A. M., Ecevitoğlu, B. 2020. Active faults determined by the geological and geophysical methods around Bursa: New findings about the strike-slip faults cross-cutting pull-apart basins. 73rd Geological Congress of Turkey with international participation, Ankara.
• Şengör, A. M. C. 1979. The North Anatolian transform fault: its age, offset and tectonic significance. Journal of the Geological Society London 136, 269-282.
• Şengör A. M. C., Cin, A. 1988. Uludağ Napı’nın alt dokanağı boyunca mezoskopik yapısal gözlemler ve napın yerleşme yönü. Türkiye Bilimsel ve Teknik Araştırma Kurumu, Proje No: TBG/824, 55, İstanbul (unpublished).
• Şengör, A. M. C., Görür, N., Şaroğlu, F. 1985. Strike-slip deformation basin formation and sedimentation: Strike-slip faulting and related basin formation in zones of tectonic escape: Turkey as a case study. Biddle, K. T., Christie-Blick, N. (Ed). Strike-Slip Faulting and Basin Formation. Society of Economic Paleontologists and Mineralogists Special Publication 37, 227-264.
• Topuz, G., Okay, A. I. 2017. Late Eocene-Early Oligocene two-mica granites in NW Turkey (the Uludağ Massif): water-fluxed melting products of a mafic metagreywacke. Lithos 268-271, 334-350.
• Türkecan, A., Yurtsever, A. 2002. 1:500.000 scale geological map of Turkey, İstanbul Sheet No:1. General Directorate of Mineral Research and Exploration, Ankara.
• Yaltırak, C. 2003. Edremit Körfezi ve kuzeyinin jeodinamik evrimi. Doktora Tezi, Istanbul Teknik Universitesi, 246, Istanbul (unpublished).
• Yaltırak, C., Ceyhan, A. 2011. The synchronous geological evolution of the Northwestern Anatolian Core Complexes (Kazdağ and Uludağ) and surrounding region. 64th Geological Congress of Turkey Abstracts with Programs, Ankara, 38-39.
• Yıldırım, C., Emre, Ö., Doğan, A. 2005. Bursa ve Uludağ fayları ile Uludağ Masifi’nin neotektonik dönem yükselimi. Eskişehir Fay Zonu ve İlişkili Sistemlerin Depremselliği Çalıştayı, Abstracts with Programs, Eskişehir, 8.
• Yılmaz, M., Koral, H. 2007. Neotectonic features and geological development of the Yenişehir basin (Bursa). İstanbul Yerbilimleri Dergisi 20, 21-32.
• Yılmaz, Y. 2017. Morphotectonic development of Anatolia and surrounding regions. Çemen, İ., Yılmaz, Y. (Ed). Active global seismology: Neotectonics and earthquake potential of the Eastern Mediterranean region. American Geophysical Union, Geophysical Monograph 225, 11-91.
• Yurdagül, A. 2004. Uludağ Granitoyidinin litojeokimyasal incelenmesi. Yüksek Lisans Tezi, Istanbul Üniversitesi, 140, Istanbul (unpublished).