The stacking pattern of shoreline progradational sequences in subsiding basins have been used as a chronologic tool in the Mediterranean region. Most previous studies have used a few key seismic lines seaward of deltas, where the record is complicated by deltaic distributary switching. Southeastern Saronikos Gulf, in the western Aegean Sea at the northwestern end of the South Aegean Arc, lacks large river input of sediment. The ENE-WSW and NW-SE trending neotectonic Aegina and Methana basins lie between the tectonically active Gulf of Corinth and the relatively stable Cyclades plateau. New high-resolution seismic profiles from southeastern Saronikos Gulf have been interpreted according to the principles of seismic and sequence stratigraphy. Alpine basement and marine Pliocene sediments have been recognized in the surrounding basin margins and more than 300 m and 150 m of unconsolidated sediments have been mapped in Aegina and Methana basin respectively. Progradational clinoforms that toplap against transgressive surfaces, have been traced along strike, leading to the establishment of a robust chronostratigraphic framework further controlled by sedimentation rates as extracted from cores. Southeastern Saronikos Gulf poses an outstanding example of development of progradational wedges formed within a microtidal, wave dominated regime of low sedimentation rates, between 2.8 cm/ka and 3.2 cm/ka, within the framework of low subsiding basins with rates between 0.03 and 0.31 m/ka. In this environment, more than 180 well preserved shoreline progradational units, with attributes similar to the ones reported from the Aegean and Eastern Mediterranean seas, have been mapped and correlated to sea level lowstands back to 866 ka. Deeper Mid-Pleistocene progradational units are also recognized, tentatively back to 1.4 Ma. Subsidence rate shows a dramatic decrease in the last 1 Ma and significant numbers of faults became inactive during the last 130 ka. In Early-Middle Quaternary, Methana basin was an isolated lake and extended terrestrial areas were shaped in the Poros-Agios Georgios plateau during sea level lowstands. Aegina basin was continuously connected to the Aegean through the Agios Georgios fault valley. This study demonstrates the robustness of chronology based on stacked shoreline progradational sequences and its applicability to determining rates of tectonic subsidence.

塌陷盆地中海岸线渐进序列的堆积模式已被用作地中海地区的年代学工具。以前的大多数研究都使用了一些重要的三角洲地震线，这些记录由于三角洲分布切换而变得复杂。位于爱琴海南部爱琴海弧西北端的爱琴海西部萨罗尼科斯湾东南部，缺乏大量的河流沉积物。ENE-WSW和NW-SE趋势的新构造埃伊纳纳盆地和Methana盆地位于构造活跃的科林斯湾和相对稳定的基克拉泽斯高原之间。根据地震和层序地层学原理对东南萨罗尼科斯湾的高分辨率高分辨率地震剖面进行了解释。在周围盆地边缘已经认识到高山基底和海洋上新世沉积物，并且在埃伊纳岛和梅塔纳盆地分别绘制了300 m和150 m的未固结沉积物。沿海床追踪到与海侵表面重叠的渐进斜斜形，导致建立了稳固的年代地层学框架，并进一步由从岩心提取的沉积速率控制。东南萨罗尼科斯海湾是在低沉降盆地（速率介于0.03和0.31 m之间）的低潮沉降率（在2.8 cm / ka和3.2 cm / ka之间）的微潮，波浪控制下形成的渐进楔形发展的杰出例子。 /K a。在这种环境下，有180多个保存完好的海岸线退化单位，具有与爱琴海和地中海东部地区报告的属性相似的属性，已进行了制图，并与回溯至866 ka的海平面低位相联系。较深的中更新世生殖单元也被认为是暂时回到1.4 Ma。沉降速率显示在最近的1 Ma中急剧下降，并且在最后的130 ka期间大量的断层变为非活动状态。在中第四纪早期，Methana盆地是一个孤立的湖泊，在海平面低位期间，Poros-Agios Georgios高原形成了扩展的陆地区域。Aegina盆地通过Agios Georgios断层谷不断与爱琴海相连。这项研究证明了基于堆积的海岸线渐进序列的年代学的鲁棒性及其在确定构造沉降速率方面的适用性。