Figure 5
From: How transform fault shear influences where detachment faults form near mid-ocean ridges
Regime diagram depicting all models with M = 0.6 and full spreading rate of 40 km/Myr and 30 km length, evaluated for their detachment fault location. Orange dots indicate detachment faults on the inside corner, blue dots indicate detachment faults on the outside corner. The orange-blue dot depicts a model in which the detachment fault does neither localize on the in- nor on the outside (runtime of 4.0 Myr). The horizontal and vertical axes are estimated strengths of the transform fault and fracture zone, respectively, based on the integrated shear strengths (see “Methods”). The TF is weaker than the FZ in the yellow-shaded area. Lines are delineate strength ratios of TF to FZ of 1:1, 1:2 and 1:4. Corresponding friction angles are labeled on the bottom and right axes. The values predicted by rock physics experiments fall into the area outlined by the dashed box. Models with longer transform faults (40 km and 50 km) show very similar results. Indeed, those model results predict inside corner-detachment faults for even more cases (see supplement S7).
