Disruption of the Hellenic arc: Late Miocene extensional detachment faults and steep Pliocene‐Quaternary normal faults—Or what happened at Corinth?
Disruption of the Hellenic arc: Late Miocene extensional detachment faults and steep Pliocene‐Quaternary normal faults—Or what happened at Corinth?
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希腊弧的断裂：晚中新世伸展滑脱断层和陡峭的上新世-第四纪正断层——或者科林斯发生了什么？
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
L. Royden
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文献类型：
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作者：
D. Papanikolaou;L. Royden
伯罗奔尼撒半岛和希腊大陆暴露的伸展断层（其中大部分是首次描述）记录了从爱琴海域的区域伸展到现代构造体系的转变。东伯罗奔尼撒半岛支离系统从伯罗奔尼撒半岛南部向西北偏北走向科林斯湾以北约 30 公里，向东北方向轻轻倾斜，年龄为中新世晚期至上新世早期。它的最小位移为 25-30 公里，似乎是平行于希腊弧形成的具有显着位移的区域规模拉张系统中最年轻的。部分同时代的东斯特里亚伸展系统从科林斯湾延伸到爱琴海，包含低角度正断层，这些断层横切且走向平行于希腊弧的较旧结构。该区域内中新世晚期到上新世早期的位移破坏了希腊人的弧平行结构。上新世-第四纪正断层大致呈东西走向，通常在地表陡峭地倾斜，继续破坏希腊弧。科林斯湾内的大部分沉降似乎与较新的断层无关，而是与横切现代地堑的东伯罗奔尼撒支队的运动有关。
Extensional faults exposed in the Peloponnesus and mainland Greece, most of which are described here for the first time, record a transition from regional extension of the Aegean domain to the modern tectonic system. The East Peloponnesus Detachment System trends north‐northwest from the southern Peloponnesus to ∼30 km north of the Gulf of Corinth, dips gently northeast, and is late Miocene–early Pliocene in age. It has a minimum displacement of 25–30 km and appears to be the youngest of the regional‐scale extensional systems with significant displacement that formed parallel to the Hellenic arc. The partially coeval East Sterea Extensional System, which extends from the Gulf of Corinth to the Aegean Sea, contains low‐angle normal faults that both crosscut and trend parallel to older structures of the Hellenic arc. Late Miocene to early Pliocene displacement within this zone disrupted the arc‐parallel structures of the Hellenides. Upper Pliocene‐Quaternary normal faults, which trend approximately east‐west and generally dip steeply at the surface, continue the disruption of the Hellenic arc. Much of the subsidence within the Gulf of Corinth appears to be unrelated to the younger faults and is instead related to the motion on the East Peloponnesus Detachment, which crosscuts the modern graben.