Structures associated with this fault zone have a wide range of sizes and shapes including small folds, the fore mentioned shear zone, and mountains and basins at each end. Pairs of mountains and basins formed diagonally from each other because of the stretching and compression associated with fault movement. In the areas of compression, the rocks become folded and bent. In the areas of extension, the thinned crust forms a low basin. And, in the areas where the faults are, the high grade metamorphic rocks have been smeared and stretched like silly putty.
All faults are very clean cut and look like someone just cut the continental crust with a knife.
The middle section of the fault zone cuts the upper and lower crusts, and even extends 100 km into the upper mantle, but there is no apparent displacement of the Moho. Timing Timing of faulting varies along different segments of the fault zone. The first strike-slip displacement was during the Mesozoic. This motion was sinistral strike-slip in the Archaean basement rock. The law of superposition suggests that the breccia formed during the early to late Cretaceous, after the mylonite.