Figures 4 and 5 (IMAGE) Science China Press Caption Figure 4: (a) AE distribution in plane; (b) 3-D view perpendicular to the fault plane; (c) 3-D view along the fault plane (d) petal cracks in resin sample. Figure 5: Concentration shear strain being observed at the wing tips first. Wing crack appearing at the later stage. With loading further applied, concentration shear strain appearing at certain place away from the fault tip, antiwing crack appearing. Credit © Science in China Press Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.