Quaternary uplift of the northern margin of the Central Anatolian Plateau: New OSL dates of fluvial and delta-terrace deposits of the Kızılırmak River, Black Sea coast, Turkey

Christopher Berndt*, Cengiz Yıldırım, Attila Çiner, Manfred R. Strecker, Gülgün Ertunç, M. Akif Sarıkaya, Orkan Özcan, Tugba Ozturk, Nafiye Gunec Kiyak

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21 Atıf (Scopus)

Özet

We analysed the interplay between coastal uplift, sea level change in the Black Sea, and incision of the Kızılırmak River in northern Turkey. These processes have created multiple co-genetic fluvial and marine terrace sequences that serve as excellent strain markers to assess the ongoing evolution of the Pontide orogenic wedge and the growth of the northern margin of the Central Anatolian Plateau. We used high-resolution topographic data, OSL ages, and published information on past sea levels to analyse the spatiotemporal evolution of these terraces; we derived a regional uplift model for the northward-advancing orogenic wedge that supports the notion of laterally variable uplift rates along the flanks of the Pontides. The best-fit uplift model defines a constant long-term uplift rate of 0.28 ± 0.07 m/ka for the last 545 ka. This model explains the evolution of the terrace sequence in light of active tectonic processes and superposed cycles of climate-controlled sea-level change. Our new data reveal regional uplift characteristics that are comparable to the inner sectors of the Central Pontides; accordingly, the rate of uplift diminishes with increasing distance from the main strand of the restraining bend of the North Anatolian Fault Zone (NAFZ). This spatial relationship between the regional impact of the restraining bend of the NAFZ and uplift of the Pontide wedge thus suggests a strong link between the activity of the NAFZ, deformation and uplift in the Pontide orogenic wedge, and the sustained lateral growth of the Central Anatolian Plateau flank.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)446-469
Sayfa sayısı24
DergiQuaternary Science Reviews
Hacim201
DOI'lar
Yayın durumuYayınlandı - 1 Ara 2018

Bibliyografik not

Publisher Copyright:
© 2018 Elsevier Ltd

Finansman

This study was funded by the European Commission as part of the Marie-Curie-ITN ALErT project (Grant FP7-PEOPLE- 2013-ITN, number 607996 ). We would like to thank A. Aksu and his drilling team for their help during our sampling campaign and A.E. Erginal for his carbonate content measurements. We would also like to acknowledge our discussions with and the suggestions provided by R. Lacassin, D. Fernandez-Blanco, G. de Gelder (IPG Paris), and H. Echtler (GFZ Potsdam). We would like to thank our editor Neil Roberts and two anonymous reviewers and Sarah Boulton for their comments, which substantially improved the quality of the paper. We further thank Martha Turewicz for the English language editing of the manuscript.

FinansörlerFinansör numarası
European CommissionFP7-PEOPLE- 2013-ITN, 607996

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