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首页> 外文期刊>Geodinamica Acta >Field evidence for normal fault linkage and relay ramp evolution: the K?rka?a? Fault Zone, western Anatolia (Turkey)
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Field evidence for normal fault linkage and relay ramp evolution: the K?rka?a? Fault Zone, western Anatolia (Turkey)

机译：正常故障链接和中继坡道演变的现场证据：K？rka？a？西安纳托利亚断层带（土耳其）

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Linking of normal faults forms at all scales as a relay ramp during growth stages and represents the most efficient way for faults to lengthen during their progressive formation. Here, I study the linking of normal faulting along the active K?rka?a? Fault Zone within the west Anatolian extensional system to reconstruct fault interaction in time and space using both field- and computer-based data. I find that (i) connecting of the relay zone/ramp occurred with two breaching faults of different generations and that (ii) the propagation was facilitated by the presence of pre-existing structures, inherited from the ?zmir-Bal?kesir transfer zone. Hence, the linkage cannot be compared directly to a simple fault growth model. Therefore, I propose a combined scenario of both hangingwall and footwall fault propagation mechanisms that explain the present-day geometry of the composite fault line. The computer-based analyses show that the approximate slip rate is 0.38?mm/year during the Quaternary, and a NE–SW-directed extension is mainly responsible for the recent faulting along the K?rka?a? Fault Zone. The proposed structural scenario also highlights the active fault termination and should be considered in future seismic hazard assessments for the region that includes densely populated settlements.
机译：正常断层的链接在生长阶段在各个尺度上都以中继斜坡的形式形成，它代表了在断层逐渐形成期间延长断层的最有效方式。在这里，我研究了沿活动K？rka？a？的正常断层的联系。西安纳托利亚扩展系统内的断层带，使用基于现场和基于计算机的数据在时间和空间上重建断层相互作用。我发现（i）中继区/斜坡的连接发生了两个不同世代的断裂断层，并且（ii）传播是通过存在从zzmir-Bal？kesir转移区继承来的已有结构而实现的。 。因此，链接不能直接与简单的故障增长模型进行比较。因此，我提出了悬壁和底壁断层传播机制的组合方案，以解释复合断层线的当前几何形状。基于计算机的分析表明，第四纪期间的滑移率约为0.38？mm /年，而NE-SW定向的伸展作用是造成K？rka？a？断裂最近的原因。断层带。拟议的结构方案还强调了活动断层的终止，在包括人口稠密的定居点的地区的未来地震危险评估中应考虑到这一点。

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