“…The Dugald River Shear Zone developed as a Riedel shear network (see Creus, 2022). Riedel shears develop with distinctive geometric arrangements and are given different names based on their kinematics and orientations (i.e., R, P, R', P', Y and T; Riedel, 1929;Tchalenko, 1968;Naylor et al, 1986;Davis et al, 2000). Idealised models for Riedel shear networks propose that strike-slip movement within a basement fault is propagated into flat-lying, relatively homogenous cover sequences where strike-slip shear strain is imposed, with slip surfaces developing in distinctive geometries (Fig.…”