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Geological Society, London, Special Publications; 2009; v. 311; p. 67-106;
DOI: 10.1144/SP311.3
© 2009 Geological Society of London

Articles

Tectono-stratigraphy of the Çankiri Basin: Late Cretaceous to early Miocene evolution of the Neotethyan Suture Zone in Turkey

Nuretdin Kaymakci1, Yakup Özçelik2, Stanley H. White3 & Paul M. Van Dijk4

1 Middle East Technical University, Department of Geological Engineering, 06531-Ankara Turkey; Current address: Utrecht University, Forth Hoofddik Paleomag Lab. Budapestlaan 17, 3584 CD Utrecht, The Netherlands
2 Turkish International Petroleum Company, Sögütözü Cad. No: 27, 06520-Sögütözü/ANKARA, Turkey
3 Faculty of Geosciences, Budapestlaan 4 3584 CD Utrecht, The Netherlands
4 ITC, Hengelosestraat 99, 7514 AE Enschede, The Netherlands

*Corresponding author (e-mail: kaymakci{at}metu.edu.tr)

The Çankiri Basin straddles the Izmir–Ankara–Erzincan Suture Zone which demarcates the former position of the northern branch of the Neotethys. It includes more than 3 km of pre-Middle Miocene in-fill related to late Cretaceous to pre-Middle Miocene evolution of the region. The basin has developed on the upper Cretaceous subduction complex and arc related basins of the Neotethys Ocean. The basin fill includes an upper Cretaceous forearc sequence overlain by Paleocene with a local unconformity. The upper Cretaceous configuration of the Çankiri basin is interpreted as a part of a forearc basin. The Paleocene and younger history is interpreted as a foreland sequence dominated by progressively southwards migrated depocenters in front of southward migrating thrust faults upon which a series of piggy-back basins were developed. Termination of the forearc setting and beginning of foreland basin conditions indicates complete subduction of the Neotethyan oceanic crust and onset of collision between the Pontides (Laurasia) and the Taurides (Gondwana) in the Paleocene. Thrusting and related sedimentation continued until the Aquitanian (Early Miocene).





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