Abstract This study investigates the coupled halokinetic and depositional processes of the contractional diapiric-minibasin province in the distal deepwater Liguro-Provencal basin. The Liguro-Provencal basin is situated above young oceanic crust developed during the NW-SE Miocene rifting and back-arc extension. The Messinian evaporite succession was deposited contemporaneously on extended continental crust and young oceanic crust. Post-Messinian postrift isostatic adjustments of the continental shelves influenced prograding sedimentary wedges, gravitational failure and gravity-driven deformation above salt, hence extensive salt diapirism is situated in a contractional domain in the deepwater basin overlying oceanic crust. The kinematic evolution of salt structures in the contractional province is analysed from preserved depositional patterns in successive genetic depocenters adjacent to salt diapirs. Within minibasin successions, four dominant depositional patterns have been classified as a layered, truncated-onlap wedge, onlap-wedge and truncated-hook. The truncated-onlap wedge sequences are early syn-kinematic depositional packages contemporaneous to salt growth and may converge towards the rising salt structure prior to diapirism. They are therefore categorised as the pre-diapiric sequence. The onlap wedge and truncated-hook styles form later syn-kinematic packages in diapiric growth phase and are labelled as halo-kinematic sequences. The layered sequence, maybe pre-kinematic and shows parallel beds all truncating on the diapir flank. This onlap wedge consists of on-lapping beds at the basal sequence boundary, stratal thinning or convergence towards the diapir flank and angular truncations on an erosional surface on the top depositional boundary proximal to the diapir flank. The truncated-hook sequence reflects an absence of beds on-lapping on the diapir roof within the sequence, beds truncate at the diapir flank and on an erosional/slip surface on top depositional boundary proximal to the diapir flank. The truncated-onlap wedge sequence reflects on-lapping beds in the middle of the sequence and older and younger beds that truncate on the top depositional boundary.

中文翻译：

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地中海西部 Liguro-Provencal 盆地深水收缩区盐底辟附近的“晕运动”层序地层分析

摘要 本研究调查了远端深水利古罗-普罗旺斯盆地收缩底辟-小盆地省的耦合晕动和沉积过程。Liguro-Provencal 盆地位于在 NW-SE 中新世裂谷和弧后伸展期间发育的年轻洋壳之上。墨西拿蒸发岩系列同时沉积在扩展的大陆地壳和年轻的大洋地壳上。后墨西拿大陆架的后裂谷等静压调整影响了进积沉积楔、重力破坏和盐上的重力驱动变形，因此广泛的盐底辟位于上覆洋壳的深水盆地的收缩域中。从与盐底辟相邻的连续成因沉积中心保存的沉积模式分析了收缩区盐结构的运动演化。在小型盆地序列中，四种主要的沉积模式被归类为层状、截断上搭楔、上搭楔和截钩状。截断上叠楔形层序是与盐类生长同时期的早期同运动沉积包，并可能在底辟之前向上升的盐类结构会聚。因此，它们被归类为前底辟序列。重叠楔形和截头钩样式在底辟生长期形成后来的同运动包，并被标记为晕运动序列。分层序列，可能是运动学前的，显示平行层都在底辟侧翼截断。该上搭楔由基底层序边界处的上搭接层、地层变薄或向底辟侧翼汇聚以及底辟侧翼附近的顶部沉积边界上的侵蚀表面上的角截断组成。截断的钩状层序反映了层序内底辟顶上没有重叠的床层，底辟侧翼和底辟侧翼附近的顶部沉积边界上的侵蚀/滑移表面上的床层被截断。截断的上叠楔形层序反映了层序中间的上叠层和在顶部沉积边界上截断的较老和较新的层。截断的钩状层序反映了层序内底辟顶上没有重叠的床层，底辟侧翼和底辟侧翼附近的顶部沉积边界上的侵蚀/滑移表面上的床层被截断。截断的上叠楔形层序反映了层序中间的上叠层和在顶部沉积边界上截断的较老和较新的层。截断的钩状层序反映了层序内底辟顶上没有重叠的床层，底辟侧翼和底辟侧翼附近的顶部沉积边界上的侵蚀/滑移表面上的床层被截断。截断的上叠楔形层序反映了层序中间的上叠层和在顶部沉积边界上截断的较老和较新的层。