For each model run, the moving wall was displaced at a constant rate. For most a angles, multiple models were run at different displacement rates. Fault trace maps were generated from model photographs and analyzed for the scaling relationship between length and displacement, size distribution of fault lengths, styles of fault segmentation, and spatial distributions of faults. The spatial distribution of subpopulations varies with a and affects the location of fault interaction within the rift zone. At higher a angles, fault growth is predominantly by tip propagation or along-strike linkage within a subpopulation causing long faults to have more linear traces.
Faults nucleate earlier and in larger number at higher a angles.
Displacement rate has a strong influence on which subpopulation dominates the deformation style, particularly at low a angles.