Late Neogene oroclinal bending in the central Taurides: A record of terminal eastward subduction in southern Turkey?

Koç, Ayten
van Hinsbergen, Douwe J. J.
Kaymakcı, Nuretdin
Langereis, Cornelis G.
The Tauride fold-thrusts belt formed during similar to S-N convergence between Africa and Eurasia since Cretaceous time. The western end of the central Taurides strike NW-SE, highly obliquely to the overall convergence direction, and connect to the NE-SW Beydaglan-Lycian Nappe flank of the western Taurides, forming the so-called 'Isparta Angle'. In Neogene time, the western and central Taurides and the inner part of the Isparta Angle became overlain by Neogene sedimentary basins including Manavgat, Koprucay and Aksu, characterized by marine clastics and carbonates. The eastern limb of the Isparta Angle experienced multidirectional Miocene to Present extension, whereas E-W shortening affected the marine sedimentary basins in the heart of the Isparta Angle. To quantitatively reconstruct the Neogene kinematic evolution of the Taurides, towards restoring the subduction system accommodating Africa-Eurasia convergence, we paleomagnetically assess if and when vertical axis rotations affected the Manavgat, Koprucay, and Aksu basins in Early Miocene to Pliocene times. We show that the northern Koprucay Basin rotated similar to 20-30 degrees clockwise, the Manavgat Basin underwent similar to 25-35 degrees counterclockwise rotation, and the Aksu Basin underwent no rotation since the Early-Middle Miocene. It was previously shown that the Beydaglari region underwent a post-Middle Miocene similar to 20 degrees counterclockwise rotation. These results show that the prominent oroclinal salient geometry of the western Taurides thus acquired, at least in part, since Miocene times, that the Koprucay Basin rotated relative to the Aksu Basin along the Aksu thrust, and that the Beydaglari platform rotated relative to the Aksu Basin along the Bucak thrust, which must have both been active until Late Neogene time. This synchronous E-W shortening in the heart of the Isparta Angle, and multidirectional extension in its eastern limb may be explained by relative westward retreat of an eastward dipping subducting Antalya slab that has previously been imaged by seismic tomography and a Benioff zone. The Neogene Bucak thrust west of the Aksu Basin may represent the most recent surface expression of the Antalya subduction zone.


Paleomagnetic rotations in the Late Miocene sequence from the Cankiri Basin (Central Anatolia, Turkey): the role of strike-slip tectonics
Lucifora, Stella; Cifelli, Francesca; Rojay, Fuat Bora; Mattei, Massimo (2013-01-01)
In this paper, new paleomagnetic and anisotropy of magnetic susceptibility (AMS) data from Miocene continental units of the Cankiri Basin are presented, with the main goal of providing additional constraints on its deformational and rotational history during the Late Cenozoic. AMS data indicate a tectonic origin for the magnetic fabric, suggesting that Upper Miocene units were still involved in the deformation processes. Paleomagnetic data show that tectonic rotations in the Cankiri Basin do not show a symm...
Paleobathymetric evolution of the Miocene deposits of the Gombe sector of the Lycian Foreland and Aksu basins in Antalya, Turkey
Sis, Fatih Seckin; Kouwenhoven, Tanja; Koç, Ayten; Kaymakcı, Nuretdin (2020-01-01)
The evolution of the Lycian Foreland and Aksu basins are associated with the Africa-Eurasia convergence and collision of intervening continental blocks. Both basins developed around the Beydaglari, a Mesozoic carbonate platform, which constitutes the main component and western limb of the Isparta Angle. The Gombe Basin is an integral part of the Lycian Foreland Basin that comprises mainly Eocene to Late Miocene turbidites, onto which the allochthonous Lycian and Antalya nappes thrust over. The Aksu Basin, h...
Late Cretaceous extension and Palaeogene rotation-related contraction in Central Anatolia recorded in the Ayhan-Buyukkisla basin
Advokaat, Eldert L.; van Hinsbergen, Douwe J. J.; Kaymakcı, Nuretdin; Vissers, Reinoud L. M.; Hendriks, Bart W. H. (2014-11-18)
The configuration and evolution of subduction zones in the Eastern Mediterranean region in Cretaceous time accommodating Africa-Europe convergence remain poorly quantitatively reconstructed, owing to a lack of kinematic constraints. A recent palaeomagnetic study suggested that the triangular Central Anatolian Crystalline Complex (CACC) consists of three blocks that once formed an similar to N-S elongated continental body, underthrusted below ophiolites in Late Cretaceous time. After extensional exhumation a...
Late Cretaceous extensional denudation along a marble detachment fault zone in the Kirsehir massif near Kaman, central Turkey
Lefebvre, Come; Barnhoorn, Auke; van Hinsbergen, Douwe J. J.; Kaymakcı, Nuretdin; Vissers, Reinoud L. M. (2011-08-01)
In the Central Anatolian Crystalline Complex (CACC), 100 km scale metamorphic domains were exhumed in a context of north-south plate convergence during late Cretaceous to Cenozoic times. The timing, kinematics and mechanisms of exhumation have been the focus of previous studies in the southern Nigde Massif. In this study, we investigate the unexplored northern area regarding the tectonic features preserved on the edges of the Kirsehir Massif, based on detailed field-mapping in the Kaman area where high-grad...
Post-Miocene Deformation in the South of the Galatean Volcanic Province, NW of Central Anatolia (Turkey)
Rojay, Fuat Bora (2008-01-01)
Central Anatolia, located on the immense Alpine-Himalayan orogenic belt, has a complicated neotectonic evolution, and NE-SW-trending Neogene horsts-graben systems that rejuvenate pre-existing palaeostructures are among the most important structures which help us understand the tectonic evolution of Central Anatolia.
Citation Formats
A. Koç, D. J. J. van Hinsbergen, N. Kaymakcı, and C. G. Langereis, “Late Neogene oroclinal bending in the central Taurides: A record of terminal eastward subduction in southern Turkey?,” EARTH AND PLANETARY SCIENCE LETTERS, pp. 75–90, 2016, Accessed: 00, 2020. [Online]. Available: