Salt tectonics at salt-bearing margins is often interpreted as the combination of gravity spreading and gravity gliding, mainly driven by differential sedimentary loading and margin tilting, respectively. Nevertheless, in the Western Mediterranean Sea, the classical salt-tectonic models are incoherent with its morpho-structural setting: Messinian salt was deposited in a closed system formed several Ma before the deposition, horizontally throughout the entire deep basin, above a homogenous multi-kilometer pre-Messinian thickness. The subsidence is purely vertical in the deep basin, implying a regional constant initial salt thickness. The post-salt overburden is homogenous and the distal salt deformation occurred before the mid-lower slope normal-fault activation. Instead, the compilation of MCS and wide-angle seismic data highlighted a clear coincidence between crustal segmentation and salt morphology domains. The salt structures change morphology at the boundary between different crustal natures. Regional thermal anomalies and/or fluid escapes, associated with the exhumation phase, or mantle-heat segmentation, could therefore play a role in adding a further component to the already known salt-tectonics mechanisms. The compilation of crustal segmentation and salt morphologies in different salt-bearing margins, such as the Santos, Angolan, Gulf of Mexico and Morocco-Nova Scotia margins, seems to depict the same coincidence. In view of the evidences observed in the Western Mediterranean Sea, the influence of the temperature parameter on salt deformation should not be overlooked and warrants further investigation.

含盐边缘的盐构造通常被解释为重力扩张和重力滑移的组合，主要分别由不同的沉积载荷和边缘倾斜驱动。然而，在地中海西部，经典的盐构造模型与其地貌结构背景不一致：墨西拿盐沉积在沉积前形成的封闭系统中，在沉积前形成了几个 Ma，水平贯穿整个深盆，在均质多千米前墨西拿厚度。深盆中的沉降是完全垂直的，这意味着区域初始盐层厚度恒定。盐后覆盖层均质，远端盐层变形发生在中下斜坡正断层活化之前。反而，MCS 和广角地震数据的汇编突出了地壳分割和盐形态域之间的明显重合。盐结构在不同地壳性质之间的边界处改变形态。因此，与折返相或地幔热分割相关的区域热异常和/或流体逃逸可能在为已知的盐构造机制添加进一步成分方面发挥作用。不同含盐边缘，如桑托斯、安哥拉、墨西哥湾和摩洛哥-新斯科舍边缘的地壳分割和盐形态的汇编，似乎描绘了同样的巧合。鉴于在西地中海观察到的证据，温度参数对盐类变形的影响不容忽视，值得进一步研究。