Fig. A2. Mechanical constraints on kink band and thrust development in the Appalachian Plateau, USA Paul Gillespie Günther Kampfer 10.6084/m9.figshare.5097421.v1 https://geolsoc.figshare.com/articles/figure/Fig_A2_Mechanical_constraints_on_kink_band_and_thrust_development_in_the_Appalachian_Plateau_USA/5097421 (<b>a</b>) A solid domain Ω loaded with the force Q. Virtual velocity fields Û on the positive and the negative side of a discontinuity ΣU, where rupture occurs. The jump in velocity Ĵ is given by [[Û]]=Û<sup>+</sup> – Û<sup>–</sup> (Kampfer 2010). (<b>b</b>)The strength domain is plotted with velocity axes aligned with the stress axes, showing the traction vector and the velocity jump vector, which have a power of maximum resistance described by the support function, for each of the 5 domains, which are opening, dilatant shear, compacting shear and compaction, respectively. The clockwise domains, 1C, 2C etc. are plotted, whereas their anticlockwise counterparts, 1A, 2A etc. are not shown. 2017-06-09 11:43:22 velocity axes USA 2. Mechanical constraints traction vector support function Appalachian Plateau Virtual velocity fields Û velocity jump vector domain Ω 5 domains stress axes discontinuity Σ U force Q anticlockwise counterparts 2 C dilatant shear strength domain 1 C compacting shear velocity Ĵ thrust development kink band Geology