García-Castellanos Daniel, Heida Hanneke, Palcu Dan V, Bulian Francesca, Sierro Francisco
Consejo Superior de Investigaciones Científicas (CSIC), Geociencias Barcelona (Geo3BCN-CSIC), Barcelona, Spain.
GeoEcoMar, National Institute of Marine Geology and Geo-ecology, Bucharest, Romania.
Sci Adv. 2025 Jul 11;11(28):eads9752. doi: 10.1126/sciadv.ads9752.
The Messinian salinity crisis (MSC) was a short period of isolation of the Mediterranean Sea that caused the precipitation of a million cubic kilometers of salt. The puzzling sedimentary record that formed after this deposition yields conflicting values of the extent of desiccation. Estimations range from a full exposure of most of the Mediterranean seafloor based on shallow fossil fauna found in the abyss to a nearly full Mediterranean scenario as suggested by similar, fresher-water deposits ubiquitous along the coastline: the so-called Lago-Mare formation. Using a landscape evolution model of the drawdown stage constrained with paleoclimate and sediment budgets, we show that the propagation of an erosional wave into the surrounding continents added a gradual sea level rise superimposed on the climatic oscillations of the Mediterranean. This retrogressive river incision along the spillways of the Paratethys and the Pannonian basins also explains the Mediterranean transition to fresher-water conditions during the last stage of the MSC.
墨西拿盐度危机（MSC）是地中海短暂的隔离期，导致了100万立方千米盐分的沉淀。此次沉积之后形成的令人费解的沉积记录，给出了关于干涸程度的相互矛盾的值。估计范围从基于深渊中发现的浅层化石动物群得出的大部分地中海海底完全暴露，到海岸线上普遍存在的类似淡水沉积物所暗示的近乎完全干涸的地中海情景：即所谓的泻湖-海洋地层。利用受古气候和沉积物收支约束的海平面下降阶段的地貌演化模型，我们表明，侵蚀波向周边大陆的传播，叠加在地中海的气候振荡之上，增加了海平面的逐渐上升。沿着古特提斯海和潘诺尼亚盆地溢洪道的这种溯源河流下切，也解释了在墨西拿盐度危机最后阶段地中海向淡水环境的转变。
