A two‐dimensional numerical analysis based on the finite element method and linear elasticity is used to demonstrate how the differential compaction of the basinal unit can cause the early deformation of a prograding and/or aggrading carbonate platform. Our model investigates the modification of the carbonate platform stratal architecture and stress field driven by the process of differential compaction. We compared the results of our model with observations from two Triassic carbonate platforms in the Italian Dolomites: Lastoni di Formin and Nuvolau Mts. (Passo Giau, Italy). We show that the model can explain the modification of stratal architecture, as well as fault and fracture patterns observed on these platforms. In particular, we show that (1) the slope and slope‐to‐basin transition regions are expected to experience most of the brittle deformation and, differently from what was suggested by previous numerical studies, the formation of platform‐ward dipping faults and major fractures with dip angles that tend to decrease moving dip‐ward. In addition, (2) the inner platform region can exhibit a slightly tensile regime, which may lead to the formation of syndepositional and/or syndiagenetic fractures. Moreover, (3) in the case of predominantly prograding platforms, the results of the model show a general tilting and thickening of the inner platform strata towards the shelf‐slope break.

中文翻译：

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盆地单元差异压实驱动碳酸盐台地早期变形的有限元分析


基于有限元法和线弹性的二维数值分析用于论证盆地单元的差异压实如何引起进积和/或加积碳酸盐台地的早期变形。我们的模型研究了差异压实过程驱动的碳酸盐台地地层结构和应力场的改变。我们将模型的结果与意大利白云岩的两个三叠纪碳酸盐台地（拉斯托尼迪福明山和努沃劳山）的观测结果进行了比较。 （帕苏焦，意大利）。我们证明该模型可以解释地层结构的变化以及在这些平台上观察到的断层和断裂模式。特别是，我们表明（1）斜坡和斜坡到盆地的过渡区域预计将经历大部分脆性变形，并且与之前的数值研究所表明的不同，平台方向倾斜断层和主要断层的形成倾角趋向于向倾方向减小的裂缝。此外，(2)内部平台区域可以表现出轻微的拉伸状态，这可能导致同沉积和/或同成岩裂缝的形成。此外，（3）在主要是前进平台的情况下，模型的结果显示内部平台地层向陆架坡折处普遍倾斜和增厚。