*4.2. Present-Day Grids*

For all models, a grid was built from the present-day geometry by dividing the 40 layers by 70 vertical pillars. The total number of cells is then 2760, but 47% of them are flattened because of the discordant nature of the sedimentation.

The sediments were filled with five lithological types, representative of di fferent shale-sand proportions: "sandy" (70% sand 30% shale), "intermediate" (50% sand 50% shale), "quite shaly" (30% sand 70% shale), "shaly" (20% sand 80% shale), and "very shaly" (10% sand 90% shale). High-stand and transgressive system tracks are wholly filled with "very shaly" facies, turbiditic deposits are wholly filled with "sandy" facies, and low-stand system tracks show the full gradation from "sandy" to "very shaly" based on distality (Figure 2).

**Figure 2.** Mesh and lithology distribution of the study-case in the present-day; vertical exaggeration × 2.
