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    Collision Chronology Along the İzmir‐Ankara‐Erzincan Suture Zone: Insights From the Sarıcakaya Basin, Western Anatolia

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    Issue Date
    2019-09-10
    Author
    Mueller, M. A.
    Licht, A.
    Campbell, C.
    Ocakoğlu, F.
    Taylor, Michael Halford
    Burch, L.
    Ugrai, T.
    Kaya, M.
    Kurtoğlu, B.
    Coster, P. M. C.
    Métais, G.
    Beard, K. C.
    Publisher
    American Geophysical Union
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Rights
    © 2019. American Geophysical Union. All Rights Reserved.
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    Abstract
    Debate persists concerning the timing and geodynamics of intercontinental collision, style of syncollisional deformation, and development of topography and fold‐and‐thrust belts along the >1,700‐km‐long İzmir‐Ankara‐Erzincan suture zone (İAESZ) in Turkey. Resolving this debate is a necessary precursor to evaluating the integrity of convergent margin models and kinematic, topographic, and biogeographic reconstructions of the Mediterranean domain. Geodynamic models argue either for a synchronous or diachronous collision during either the Late Cretaceous and/or Eocene, followed by Eocene slab breakoff and postcollisional magmatism.

    We investigate the collision chronology in western Anatolia as recorded in the sedimentary archives of the 90‐km‐long Sarıcakaya Basin perched at shallow structural levels along the İAESZ. Based on new zircon U‐Pb geochronology and depositional environment and sedimentary provenance results, we demonstrate that the Sarıcakaya Basin is an Eocene sedimentary basin with sediment sourced from both the İAESZ and Söğüt Thrust fault to the south and north, respectively, and formed primarily by flexural loading from north‐south shortening along the syncollisional Söğüt Thrust. Our results refine the timing of collision between the Anatolides and Pontide terranes in western Anatolia to Maastrichtian‐Middle Paleocene and Early Eocene crustal shortening and basin formation. Furthermore, we demonstrate contemporaneous collision, deformation, and magmatism across the İAESZ, supporting synchronous collision models. We show that regional postcollisional magmatism can be explained by renewed underthrusting instead of slab breakoff. This new İAESZ chronology provides additional constraints for kinematic, geodynamic, and biogeographic reconstructions of the Mediterranean domain.
    Description
    An edited version of this paper was published by AGU. Copyright 2019 American Geophysical Union.
    URI
    http://hdl.handle.net/1808/31471
    DOI
    https://doi.org/10.1029/2019TC005683
    Collections
    • Ecology and Evolutionary Biology Scholarly Works [1450]
    • Biodiversity Institute & Natural History Museum Scholarly Works [288]
    • Geology Scholarly Works [236]
    Citation
    Mueller, M. A., Licht, A., Campbell, C., Ocakoğlu, F., Taylor, M. H., Burch, L., et al. (2019). Collision chronology along the İzmir‐Ankara‐Erzincan suture zone: Insights from the Sarıcakaya Basin, western Anatolia. Tectonics, 38, 3652– 3674. https://doi.org/10.1029/2019TC005683

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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