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首页> 外文期刊>Earth, planets and space: EPS >An example of secondary fault activity along the North Anatolian Fault on the NE Marmara Sea Shelf, NW Turkey
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An example of secondary fault activity along the North Anatolian Fault on the NE Marmara Sea Shelf, NW Turkey

机译：土耳其西北马尔马拉海架北安那托利亚断层的次生断层活动实例

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摘要

Seismic data on the NE Marmara Sea Shelf indicate that a NNE-SSW-oriented buried basin and ridge system exist on the sub-marine extension of the Paleozoic Rocks delimited by the northern segment of the North Anatolian Fault (NS-NAF), while seismic and multi-beam bathymetric data imply that four NW-SE-oriented strike-slip faults also exist on the shelf area. Seismic data indicate that NW-SE-oriented strike-slip faults are the youngest structures that dissect the basin-ridge system. One of the NW-SE-oriented faults (F1) is aligned with a rupture of the North Anatolian Fault (NAF) cutting the northern slope of the Cü ?narc?k Basin. This observation indicates that these faults have similar characteristics with the NS-NAF along the Marmara Sea. Therefore, they may have a secondary relation to the NAF since the principle deformation zone of the NAF follows the Marmara Trough in that region. The seismic energy recorded on these secondary faults is much less than that on the NAF in the Marmara Sea. These faults may, however, produce a large earthquake in the long term.
机译：NE Marmara海架上的地震数据表明，以北安那托利亚断层（NS-NAF）北部为界的古生代岩石的海底延伸上存在着一个以NNE-SSW为主的埋藏盆地和山脊系统。多波束测深数据表明，在该陆架地区还存在四个以北西向东南为导向的走滑断层。地震数据表明，西北向东南走向的走滑断层是解剖盆地-脊线系统的最年轻的构造。 NW-SE向断裂之一（F1）与北安纳托利亚断裂（NAF）的破裂对准，该断裂切割了库纳尔克盆地的北坡。这项观察表明，这些断层与马尔马拉海沿岸的NS-NAF具有相似的特征。因此，它们可能与NAF具有次要关系，因为NAF的主要变形区在该区域遵循Marmara槽。这些次生断层记录的地震能量远小于马尔马拉海NAF记录的地震能量。但是，从长远来看，这些断层可能会引起大地震。

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