Using the Massive Messinian Erosion Event as a Natural Experiment to Study the Growth of a Shelfbreak Margin

在地中海的梅西尼期干涸期间，大约6英里。早些时候，裸露的边缘被严重侵蚀到比现在的海平面低约2公里的新的基准面，导致现有陆架平台的大规模地面侵蚀，将许多边缘变成向盆地倾斜的斜坡。在随后的洪水期间，这些地区被上新世沉积的堆积所覆盖。PI将参加一次法国邮轮，并检查罗纳河边缘。这是一个相对年轻的边际，保存得很好。邮轮将获得多通道地震数据，这些数据将与现有的DAA一起被解释为重建从峡谷切割和切割到沉积楔形的后期发育的演化边缘的结构。

During the Messinian desiccation of the Mediterranean around 6 m.y. ago, exposed margins were severely eroded to a new base level ca. 2 km below present day sea level, leading to massive subaerial erosion of existing shelf platforms, transforming many margins into basinward dipping ramps. During the subsequent flooding these were then covered by aggrading to prograding Pliocene sediments. The PIs will participate in a French cruise and examine the Rhone River margin. This is a relatively young margin and is well preserved. The cruise will acquire multi-chammel seismic data, which, along with the existing daa, will be interpreted to reconstruct the architecture of the evolving margin, from canyon cutting and incision to late rdevelopment of the sediment wedges.