Differential uplift along the northern margin of the central anatolian plateau: Inferences from marine terraces

Cengiz Yildirim*, Daniel Melnick, Paolo Ballato, Taylor F. Schildgen, Helmut Echtler, A. Evren Erginal, Nafiye Güneç iyak, Manfred R. Strecker

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47 Atıf (Scopus)

Özet

Emerged marine terraces and paleoshorelines along plate margins are prominent geomorphic markers that can be used to quantify the rates and patterns of crustal deformation. The northern margin of the Central Anatolian Plateau has been interpreted as an actively deforming orogenic wedge between the North Anatolian Fault and the Black Sea. Here we use uplifted marine terraces across principal faults on the Sinop Peninsula at the central northern side of the Pontide orogenic wedge to unravel patterns of Quaternary faulting and orogenic wedge behavior. We leveled the present-day elevations of paleoshorelines and dated marine terrace deposits using optically stimulated luminescence (OSL) to determine coastal uplift. The elevations of the paleoshorelines vary between 4±0.2 and 67±1.4m above sea level and OSL ages suggest terrace formation episodes during interglacial periods at ca125, 190, 400 and 570ka, corresponding to marine isotopic stages (MIS) 5e, 7a, 11 and 15. Mean apparent vertical displacement rates (without eustatic correction) deduced from these terraces range between 0.02 and 0.18mm/a, with intermittent faster rates of up to 0.26mm/a. We obtained higher rates at the eastern and southern parts of the peninsula, toward the hinterland, indicating non-uniform uplift across the different morphotectonic segments of the peninsula. Our data are consistent with active on- and offshore faulting across the Sinop Peninsula. When integrated with regional tectonic observations, the faulting pattern reflects shortening distributed over a broad region of the northern margin of the Central Anatolian Plateau during the Quaternary.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)12-28
Sayfa sayısı17
DergiQuaternary Science Reviews
Hacim81
DOI'lar
Yayın durumuYayınlandı - 1 Ara 2013

Finansman

This study is part of the Vertical Anatolian Movements Project (VAMP), funded by the TOPO-EUROPE initiative of the European Science Foundation, including contributions by the German Science Foundation (DFG) to MS (grants STR373/20-1 and 25-1). CY was supported by Deutsche Forschungsgemeinschaft (DFG: EC 138/5-1), Potsdam University, Deutsches GeoForschungsZentrum Potsdam and TUBITAK 107Y333; HE was supported by Deutsche Forschungsgemeinschaft (DFG: EC 138/5-1). TS was supported by the Leibniz Center for Surface Processes and Climate Studies at the University of Potsdam (DFG: STR373/20-1) and the Alexander von Humboldt Foundation.

FinansörlerFinansör numarası
Deutsches GeoForschungsZentrum Potsdam
TUBITAK107Y333
Alexander von Humboldt-Stiftung
European Science Foundation
Deutsche Forschungsgemeinschaft25-1, STR373/20-1, EC 138/5-1
Universität Potsdam

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