Flexural-slip during visco-elastic buckle folding

The characteristics and formation mechanism of a regional fault in shale strata: Insights from the Middle-Upper Yangtze, China

“…8). Flexural slip commonly occurs between beds and along competent-incompetent contacts (Damasceno et al, 2017;Fagereng and Byrnes, 2015;Geoff Tanner, 1989). Hence, at the macroscopic level, the flexural slip occurred readily in the interlayer section containing folded strata.…”

“…8) and dominates the flexural slip intensity as it increases from the core to the limb. The fabric of the detachment fault gradually changes from breccia with decoupled shale layers in the core section to fault gouge and breccia with S cleavages in the limb of the fold (Damasceno et al, 2017;Geoff Tanner, 1989;Smart et al, 2009a).…”