Fig. 9
Outcrop photographs of S–C phyllonite in the Yuli Belt along the north bank of the middle Chingsuei River (see Fig. 5 for location). Main foliation, S2, dips gently north (Fig. 10A and is horizontal in the photographs. Isolated isoclinal fold hinges with one suggesting an S-shaped asymmetry (black arrows) indicate a pre-existing foliation. Elliptical quartz inclusion oblique to S2 (C, inset) suggests a top-to-the-west sense of shear during S2. D3 fold axial surfaces, F3, and crenulation cleavage, S3, dip east (Fig. 10A). Scale, shear sense and view direction are the same in all photographs