“…Regardless of scale, modeling demonstrates that strength contrasts determine not only detachment horizons, but also the structural style (Bauville & Schmalholz, 2015;Ruh et al, 2012;Simpson, 2010;Stockmal et al, 2007). In the upper crust, thick-skinned thrust systems may also utilize pre-thrusting weaknesses such as basement foliations (e.g., Schmidt et al, 1995) or shear zones (Weil, Yonkee, & Kendall, 2014), dikes (e.g., Neely & Erslev, 2009), or older normal faults (e.g., Pearson et al, 2013).…”