First Balanced Cross Section Across the Taurides Fold-Thrust Belt: Geological Constraints on the Subduction History of the Antalya Slab in Southern Anatolia

Download

10.1029:2017TC004893.pdf

Date

2018-10-01

Author

McPhee, Peter J.
Altıner, Demir
van Hinsbergen, Douwe J. J.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

285
views

204
downloads

Eastern Mediterranean subduction accommodated Africa-Eurasia convergence since Mesozoic time and produced multiple subducted slab fragments in the mantle below Anatolia. These included the north dipping Cyprus and ENE-dipping Antalya slabs, which are currently separated by an upper mantle slab gap. Segmentation of these slabs, and associated mantle flow, may have contributed to <8 Ma uplift of the Central Anatolian Plateau. The western Central Taurides fold-thrust belt in southern Turkey is in the upper plate above the Antalya slab and contains a geological record of its subduction. We present the first orogen-scale balanced cross section of the Taurides and find that it formed in two stages: (1) Cretaceous to middle Eocene thrusting resulted in a minimum of 73-km shortening, and (2) Mio-Pliocene thrusting resulted in a minimum of 17.5-km shortening. Eocene shortening accounts for only similar to 5 Myr of Africa-Eurasia plate convergence. It is unlikely that >400 km of post to middle Eocene plate convergence was accommodated between the Taurides and its Beydalar platform foreland and instead must have been accommodated south of Beydalar. The associated southward plate boundary jump separated the Antalya slab from the African plate and the Cyprus slab. The isolated Antalya slab was left in an intraplate setting and is probably still attached to Beydalar today. We suggest the continental composition of the Antalya slab may have prevented its detachment. Finally, the gap between the Antalya and Cyprus slabs existed since at least Eocene time; their decoupling likely did not contribute to late Neogene Central Anatolian Plateau uplift.

Subject Keywords

ISPARTA ANGLE, MENDERES MASSIF, TEMPERATURE METAMORPHISM, MIOCENE EVOLUTION, WESTERN ANATOLIA, CENTRAL PONTIDES, SW TURKEY, BASIN, ZONE, OPHIOLITES

URI

https://hdl.handle.net/11511/38512

Journal

TECTONICS

DOI

https://doi.org/10.1029/2017tc004893

Collections

Department of Geological Engineering, Article

Suggestions

OpenMETU
Core

The structure of the Palaeozoic schists in the southern Menderes Massif, western Turkey: a new approach to the origin of the main Menderes Metamorphism and its relation to the Lycian Nappes Bozkurt, Erdin (1999-01-01) The Early Eocene to Early Oligocene tectonic history of the Menderes Massif involves a major regional Barrovian-type metamorphism (M-1, Main Menderes Metamorphism, MMM), present only in the Palaeozoic-Cenozoic metasediments (the so-called "cover" of the massif), which reached upper amphibolite facies with local anatectic melting at structurally lower levels of the cover rocks and gradually decreased southwards to greenschist facies at structurally higher levels. it is not present in the augen gneisses (the ...
New zircon U-Pb LA-ICP-MS ages and Hf isotope data from the Central Pontides (Turkey): Geological and geodynamic constraints ÇİMEN, OKAY; Göncüoğlu, Mehmet Cemal; Simonetti, Antonio; Sayıt, Kaan (2018-05-01) The Central Pontides in northern Anatolia is located on the accretionary complex formed by the closure of Neotethyan Intra-Pontide Ocean between the southern Eurasian margin (Istanbul-Zonguldak Terrane) and the Cimmerian Sakarya Composite Terrane. Among other components of the oceanic lithosphere, it comprises not yet well-dated felsic igneous rocks formed in arc-basin as well as continent margin settings. In-situ U-Pb age results for zircons from the arc-basin system (tiangaldag Metamorphic Complex) and th...
A geochemical approach to Neogene-Quaternary volcanic activity of western Anatolia: An example of episodic bimodal volcanism within the Selendi Basin, Turkey Ersoy, Y.; Helvaci, C.; Sozbilir, H.; ERKÜL, FUAT; Bozkurt, Erdin (2008-09-30) New radiometric age and geochemical data are presented from the late Cenozoic volcanic activity in the Selendi Basin of western Anatolia. Stratigraphical and age data show that the volcanism occurred in four distinct stages from the early Miocene to Quaternary. The first early Miocene stage includes two volcanic units with contrasting compositions: the Egreltidag volcanic unit and the Kuzayir lamproite. These volcanic units interfinger with the sedimentary rocks of the early Miocene Hacibekir Group. The Egr...
Revealing plio-pleistocene terrestrial-marine environmental transititons in Southwestern Anatolia by using magnetostratigraphy: first observations from Datça graben İnce, Meryem Dilan; Tosun, Levent; Uzel, Bora; Langereıs, Cor; Kaymakcı, Nuretdin; Özkaymak, Çağlar; Stoıca, Marıous ( TMMOB Jeoloji Mühendisleri Odası; 2019-02-01) In this study, it was aimed to show the Plio-Quaternary terrestrial and marine sediments deposited in the coasts of Southwestern Anatolia and the tectonic and global origin of those units that reveal the sea level changes by using integrated stratigraphic and structural geologic data. This stıdy comprise the results of the first data conducted in Datça, Bodrum, Söke and Germencik areas are selected in the scope of this study. In this presentation, first observations from Datça area will be discussed. The NW...
Paleomagnetic evidence for an inverse rotation history of Western Anatolia during the exhumation of Menderes core complex UZEL, BORA; Langereis, Cornelis G.; Kaymakcı, Nuretdin; SÖZBİLİR, HASAN; ÖZKAYMAK, ÇAĞLAR; Ozkaptan, Murat (2015-03-15) Within the Aegean extensional system, the izmir-Balikesir Transfer Zone (IBTZ) is a crucial element in the late Cenozoic evolution of western Anatolia since it accommodates the differential deformation between the Cycladic and the Menderes metamorphic core complexes. Here, we determine the rotational history of western Anatolia using new paleomagnetic data from 87 sites in Miocene volcano-sedimentary rocks to better understand the role of the IBTZ. Our results reveal two discrete and opposite major rotation...

Citation Formats

P. J. McPhee, D. Altıner, and D. J. J. van Hinsbergen, “First Balanced Cross Section Across the Taurides Fold-Thrust Belt: Geological Constraints on the Subduction History of the Antalya Slab in Southern Anatolia,” TECTONICS, pp. 3738–3759, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38512.