The Saronikos Gulf hosts the northwestern end of the South Aegean Active Volcanic Arc. It is affected by extensional back-arc tectonism in a prominent N-S direction, while older E-W rifting is also manifested. Recently acquired swath bathymetry and high-resolution seismic profiles led to the precise morphological mapping of five Quaternary continental shelf basins, along with their neotectonic delineations and their cross-correlation to the onshore active fault zones. Aegina and Methana basins, in the southeast Saronikos Gulf, display subsidence along ENE-WSW and NW-SE axes, and continuous marine sedimentation throughout the Upper Quaternary. Salamina basin in the northeast Saronikos Gulf is a shallow, relatively stable sedimentary basin, intermittently connected to the SE and NW Saronikos Gulf through the Aegina-Fleves and the Aegina-Salamina plateau respectively. In the western and most active region of Saronikos Gulf, the onshore E-W–trending faults of Kechrees and Agios Vassileios extend eastwards until the Salamina-Aegina plateau. The Megara basin is WNW-ESE oriented, possibly affected by the N-S Korfos fault valley, which connects the Megara and Epidavros basins. E-W–trending faults tilt the Quaternary sedimentary blocks, in compatibility to the N-S extensional tectonic regime of the adjacent Gulf of Corinth. Prograding clinoforms in the Megara and Epidavros basins reveal an Upper Quaternary-age intermittent connection to the open sea. Mass transport deposits and volcanic flows in-between the Upper Quaternary sediments of the Epidavros basin manifest the 500–400 ka tectonic phase that affected both the NE Peloponnese coast and the active N-S and NW-SE to WNW-ESE striking faults of the Epidavros basin margin.

中文翻译：

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爱琴海萨罗尼科斯湾第四纪大陆架盆地

萨罗尼科斯湾位于南爱琴海活动火山弧的西北端。它受到突出的 NS 方向的伸展弧后构造作用的影响，同时也表现出较老的 EW 裂谷。最近获得的条带测深和高分辨率地震剖面导致了五个第四纪大陆架盆地的精确形态映射，以及它们的新构造轮廓和它们与陆上活动断层带的互相关。位于萨罗尼科斯湾东南部的 Aegina 和 Methana 盆地显示沿 ENE-WSW 和 NW-SE 轴的沉降，以及整个上第四纪的连续海洋沉积。萨罗尼科斯湾东北部的萨拉米纳盆地是一个浅的、相对稳定的沉积盆地，分别通过埃伊纳-弗莱维斯和埃伊纳-萨拉米纳高原间歇性地与东南和西北萨罗尼科斯湾相连。在萨罗尼科斯湾西部和最活跃的地区，Kechrees 和 Agios Vassileios 的陆上东西向断层向东延伸，直到 Salamina-Aegina 高原。梅加拉盆地面向 WNW-ESE，可能受到连接梅加拉盆地和埃皮达夫罗斯盆地的 NS Korfos 断层谷的影响。EW 向断层倾斜第四纪沉积块，与相邻科林斯湾的 NS 伸展构造体系兼容。梅加拉和埃皮达夫罗斯盆地的前移斜坡揭示了上第四纪与公海的间歇性连接。