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

Abstract

The Ç ankırı Basin straddles the İzmir-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 Ç ankırı 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).

Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

“…In the eastern Pontides, there was rapid uplift in the Paleocene-early Eocene [Boztuğ et al, 2004]. The late Cretaceous forearc basin also migrated southward up to the EoceneOligocene and evolved into a foreland basin, as attested by the deposition of deep-sea, shallow marine and, finally, continental sediments [Yılmaz et al, 1997;Okay et al, 2001b;Kaymakci et al, 2009]. In the late Oligocene-early Miocene, HT-MP metamorphism (i.e.…”

“…The CACC then underwent compressional tectonics since the Paleocene, resulting in complete tectonic reorganization of the complex [Lefebvre et al, 2013] and the oroclinal bending of the late Cretaceous-Oligocene forearc/foreland Çankırı basin, located in the northern part of the CACC [Kaymakci et al, 2003[Kaymakci et al, , 2009Meijers et al, 2010].…”

“…The indentation of the CACC along the Izmir-Ankara oceanic suture zone induced the oroclinal bending of the central Pontides [Kaymakci et al, 2003[Kaymakci et al, , 2009Meijers et al, 2010] as well as the tectonic reorganization of the CACC [Lefebvre et al, 2013]. In the late Paleocene-early Eocene, a second collisional event between the Eurasian-CACC margin and the Anatolide-Tauride block resulted in the closure of the Inner-Tauride and the IzmirAnkara oceanic domains as well as the marine corridor separating the Pelagonian and Tauride…”

Paleomagnetic constraints on the timing and distribution of Cenozoic rotations in Central and Eastern Anatolia

“…The Pontides of Central Anatolia were deformed in the Paleogene time into a northward convex orocline (Meijers et al, 2010;Kaymakci et al, 2003;Çinku et al, 2011;Lucifora et al, 2013). Deformation was accommodated along thrusts associated with the IAESZ in the south and thrusts inverting the southern Black Sea margin in the north (Kaymakci et al, 2009;Espurt et al, 2014;Fig. 1).…”

Middle Eocene paleomagnetic data from the eastern Sakarya Zone and the central Pontides: Implications for the tectonic evolution of north central Anatolia

“…[1996], Tatar et al [1995], and İşseven and Tüysüz [2006]. Site groups G1 to G12 as defined in [ 2004,2010], and thrusts are after Yılmaz [1982], Yılmaz et al [1993b], Özcan et al [1996], Hakyemez and Papak [2002], Uğuz et al [2002], and Kaymakcı et al [2009]. Kaymakcı et al, 2000Kaymakcı et al, , 2001Kaymakcı et al, , 2003aKaymakcı et al, , 2003bVincent et al, 2005].…”