NUK - logo
E-viri
Celotno besedilo
Recenzirano
  • Quaternary uplift of the no...
    Berndt, Christopher; Yıldırım, Cengiz; Çiner, Attila; Strecker, Manfred R.; Ertunç, Gülgün; Sarıkaya, M. Akif; Özcan, Orkan; Ozturk, Tugba; Kiyak, Nafiye Gunec

    Quaternary science reviews, 12/2018, Letnik: 201
    Journal Article

    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. •Multiple fluvial, deltaic and coastal terraces along the Black Sea coast of Turkey.•New terrace chronology that spans the last 545 ka (MIS 14).•The uplift of the Central Pontides sustained at a rate of 0.28 ± 0.07 m/ka.•A northward-growing orogenic wedge that spatially coincides with a restraining bend.•The lateral growth of the northern flanks of the Central Anatolian Plateau.