Fig. 6: Comparison between observed and best-fit modeled terrace tread elevation.

a Gray circles represent fault-perpendicular topographic profiles P6 and P7 extracted from Pleiades-derived DSM across the deformed terrace T6. Blue dashed lines show the vertical displacement calculated with a rigid block model for a fault displacement ranging from 119 m to 159 m as proposed by Berthet et al.¹². The blue solid line is the best-fit surface deformation obtained with the proposed modeling approach for a cumulative displacement of 138 m and taking into account aggradation and fault dip angle variation (see white star marker location on Supplementary Fig. 2 for the value of model parameters). b Same as a for topographic profiles from P2 to P5. The best-fit surface (green solid line) is obtained with a fault displacement of 136 m (see white star marker location on Fig. 8 for the value of model parameters). c Same as a for profile P1 across the terrace T2. The best-fit surface (red solid line) is obtained with a fault displacement of 12.9 m (see white star marker location on Fig. 7 for the value of model parameters). d Simplified sketch showing the geometry of the two tested models. The dashed line gives the rigid block model geometry that assumes a constant fault dip angle defined by the slope observed at the surface. The solid line represents the proposed model based on an elastic dislocation full-space approach with four north-dipping segments, each with its dip angle and length (see text and Figs. 7 and 9 for details about trade-offs and distribution of these parameters). For simplicity, we represent the fault geometry associated with profile P1, knowing it varies laterally and sediment thicknesses differ between T2 and T6.