The Manyas fault zone (MFZ) is a splay fault of the Yenice Gönen Fault, which is located on the southern branch of the North Anatolian Fault System. The MFZ is a 38 km long, WNW–ESE-trending and normal fault zone comprised of three en-echelon segments. On 6 October 1964, an earthquake (Ms = 6.9) occurred on the Salur segment. In this study, paleoseismic trench studies were performed along the Salur segment. Based on these paleoseismic trench studies, at least three earthquakes resulting in a surface rupture within the last 4000 years, including the 1964 earthquake have been identified and dated. The penultimate event can be correlated with the AD 1323 earthquake. There is no archaeological and/or historical record that can be associated with the oldest earthquake dated between BP 3800 ± 600 and BP 2300 ± 200 years. Additionally, the trench study performed to the north of the Salur segment demonstrates paleoliquefaction structures crossing each other. The surface deformation that occurred during the 1964 earthquake is determined primarily to be the consequence of liquefaction. According to the fault plane slip data, the MFZ is a purely normal fault demonstrating a listric geometry with a dip of 64°–74° to the NNE.

中文翻译：

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马尼亚斯断层带（南马尔马拉地区，土耳其西北部）：活动构造和古地震学

马尼亚斯断层带 (MFZ) 是 Yenice Gönen 断层的张开断层，位于北安纳托利亚断层系统的南支。MFZ 是一个 38 公里长、WNW-ESE 走向的正断层带，由三个梯形段组成。1964 年 10 月 6 日，Salur 段发生地震（Ms = 6.9）。在这项研究中，沿 Salur 段进行了古地震海沟研究。根据这些古地震海沟研究，在过去 4000 年中至少发生了 3 次导致地表破裂的地震，包括 1964 年的地震，并确定了年代。倒数第二个事件可以与公元 1323 年的地震相关联。没有考古和/或历史记录可以与 BP 3800 ± 600 和 BP 2300 ± 200 年之间的最古老地震相关联。此外，在 Salur 段以北进行的海沟研究表明，古液化结构相互交叉。1964 年地震期间发生的地表变形主要被确定为液化的结果。根据断层面滑动数据，MFZ 是一个纯粹的正断层，展示了一个向 NNE 倾斜 64°–74° 的列表几何形状。