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首页> 外文期刊>Tectonics >Late Neogene and active orogenic uplift in the Central Pontides associated with the North Anatolian Fault: Implications for the northern margin of the Central Anatolian Plateau, Turkey
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Late Neogene and active orogenic uplift in the Central Pontides associated with the North Anatolian Fault: Implications for the northern margin of the Central Anatolian Plateau, Turkey

机译：与北安纳托利亚断层有关的中部新近晚期晚期活动造山活动：对土耳其中部安纳托利亚高原北缘的影响

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摘要

Surface uplift at the northern margin of the Central Anatolian Plateau (CAP) is integrally tied to the evolution of the Central Pontides (CP), between the North Anatolian Fault (NAF) and the Black Sea. Our regional morphometric and plate kinematic analyses reveal topographic anomalies, steep channel gradients, and local high relief areas as indicators of ongoing differential surface uplift, which is higher in the western CP compared to the eastern CP and fault-normal components of geodetic slip vectors and the character of tectonic activity of the NAF suggest that stress is accumulated in its broad restraining bend. Seismic reflection and structural field data show evidence for a deep structural detachment horizon responsible for the formation of an actively northward growing orogenic wedge with a positive flower-structure geometry across the CP and the NAF. Taken together, the tectonic, plate kinematic, and geomorphic observations imply that the NAF is the main driving mechanism for wedge tectonics and uplift in the CP. In addition, the NAF Zone defines the boundary between the extensional CAP and the contractional CP. The syntectonic deposits within inverted intermontane basins and deeply incised gorges suggest that the formation of relief, changes in sedimentary dynamics, and >1 km fluvial incision resulted from accelerated uplift starting in the early Pliocene. The Central Pontides thus provide an example of an accretionary wedge with surface-breaking faults that play a critical role in mountain building processes, sedimentary basin development, and ensuing lateral growth of a continental plateau since the end of the Miocene.
机译：中部安纳托利亚高原（CAP）北缘的地表隆升与中部庞德特斯（CP）的演化紧密相关，位于北安纳托利亚断层（NAF）和黑海之间。我们进行的区域形态学和板块运动学分析揭示了地形异常，陡峭的河道梯度和局部高起伏区域作为进行中的不同表面隆起的指标，与东部CP和大地滑移矢量的断层法向分量相比，西部CP的高NAF构造活动的特征表明，应力在其广泛的约束弯曲中积累。地震反射和结构场数据表明，深层结构脱离层层的形成负责形成一个向北生长的造山楔，其在CP和NAF上具有正的花结构几何形状。综合起来，构造，板块运动学和地貌观测结果表明，NAF是CP楔形构造和隆升的主要驱动机制。此外，NAF区域定义了拉伸CAP和收缩CP之间的边界。倒山间盆地和深切的峡谷内的构造沉积表明，上新世初期开始的隆升加速形成了浮雕的形成，沉积动力学的变化以及河流切开> 1 km。因此，中庞德提供了一个具有断层断裂的增生楔形的例子，这些断层在中新世末期以来的山区建设过程，沉积盆地的发展以及随之而来的高原的横向生长中起着至关重要的作用。

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  • 来源
    《Tectonics》 |2011年第5期|p.TC5005.1-TC5005.24|共24页
  • 作者

    Cengiz Yildirim; Taylor F. Schildgen; Helmut Echtler; Daniel Melnick; Manfred R. Strecker;

  • 作者单位

    Deutsches GeoForschungsZentrum Potsdam and DFG Leibniz Center for Surface Process and Climate Studies at Universitat Potsdam, Potsdam, Germany Deutsches GeoForschungsZentrum, Telegrafenberg, C 109, D-14473 Potsdam, Germany,Institut fur Erd- und Umweltwissenschaften and DFG Leibniz Center for Surface Process and Climate Studies at Universitat Potsdam, Potsdam, Germany Institut fur Erd- und Umweltwissenschaften, Universitat Potsdam, Karl-Liebknecht-Strasse 24, D-14476 Potsdam, Germany;

    Institut fur Erd- und Umweltwissenschaften and DFG Leibniz Center for Surface Process and Climate Studies at Universitat Potsdam, Potsdam, Germany Institut fur Erd- und Umweltwissenschaften, Universitat Potsdam, Karl-Liebknecht-Strasse 24, D-14476 Potsdam, Germany;

    Deutsches GeoForschungsZentrum Potsdam and DFG Leibniz Center for Surface Process and Climate Studies at Universitat Potsdam, Potsdam, Germany Deutsches GeoForschungsZentrum, Telegrafenberg, C 109, D-14473 Potsdam, Germany;

    Institut fur Erd- und Umweltwissenschaften and DFG Leibniz Center for Surface Process and Climate Studies at Universitat Potsdam, Potsdam, Germany Institut fur Erd- und Umweltwissenschaften, Universitat Potsdam, Karl-Liebknecht-Strasse 24, D-14476 Potsdam, Germany;

    Institut fur Erd- und Umweltwissenschaften and DFG Leibniz Center for Surface Process and Climate Studies at Universitat Potsdam, Potsdam, Germany Institut fur Erd- und Umweltwissenschaften, Universitat Potsdam, Karl-Liebknecht-Strasse 24, D-14476 Potsdam, Germany;

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