The trend of the fold reflects the trend of the ramp below the thrust sheet. Frontal ramps are steeper than the main fault surface and therefore produce ramp anticlines (Figure 6.5). On lateral ramps, if the displacement has a component up the ramp, then an anticline forms (Figure 6.8 A, B), if displacement has a component down the ramp, then a syncline develops (Figure 6.8 A, C).