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首页> 外文期刊>Geodinamica Acta >Two-phased evolution of the Su?ehri Basin on the North Anatolian Fault Zone, Turkey
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Two-phased evolution of the Su?ehri Basin on the North Anatolian Fault Zone, Turkey

机译：土耳其北安纳托利亚断裂带上苏赫里盆地的两阶段演化

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摘要

This study has aimed to evaluate the current tectonic structure of the Su?ehri Basin located on the eastern part of the North Anatolian Fault Zone (NAFZ), one of the most important active faults in Turkey. The work extends earlier investigations of offset and seismicity on the NAFZ and tests a range of evolutionary models. In this study, buried faults have been determined from Ground penetrating radar and magnetic anomalies and possible discontinuities identified by interpolating these data in a region between G?lova and Su?ehri. The discontinuities are shown to be linked to negative flower structures formed within the strike-slip fault zone. Quickbird satellite images have been used to map faults and produce kinematic analyses which show that the active stress regime is dominantly strike-slip. However, normal faults and oblique-slip faults are also observed in the basin together with strike-slip faults and the stress regime creating the strike-slip faults is shown to have formed under NW-SE directed transtension. In addition, oblique faults formed under an extensional regime with NNE-SSW direction also occur in the Su?ehri Basin as subsets formed under the constraining strike-slip regime. We conclude that the Su?ehri Basin started to grow as a fault wedge basin following which it transformed into a pull-apart basin by a south splay on the NAFZ so it is now dominantly a transtensional pull-apart feature.
机译：这项研究旨在评估位于北安纳托利亚断裂带（NAFZ）东部的苏赫里盆地的当前构造结构，该断裂带是土耳其最重要的活动断裂之一。这项工作扩展了对NAFZ的偏移和地震活动的早期研究，并测试了一系列演化模型。在这项研究中，已通过探地雷达和磁异常确定了隐伏断层，并通过将这些数据插值在格洛娃和苏赫里之间的区域中确定了可能的不连续性。所示的不连续性与走滑断裂带内形成的负花结构有关。 Quickbird卫星图像已用于绘制断层图并进行运动学分析，表明活动应力状态主要为走滑。然而，在盆地中也观察到正断层和斜滑断层，以及走滑断层，并且在西北向东南向张应力作用下，形成走滑断层的应力状态已经形成。另外，在苏涅里盆地也发生了以ＮＮＥ－ＳＳＷ方向的伸展体制下形成的倾斜断层，这是在约束走滑体制下形成的子集。我们得出的结论是，苏赫里盆地开始以断层楔形盆地的形式生长，随后它在NAFZ上向南伸展，转变为拉张盆地，因此它现在主要是张拉拉张特征。

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