A very gently sloping platform extending seaward from the base of a cliff, and subject to salt weathering, alternate wetting and drying, water-level weathering, and quarrying, hydraulic action, pneumatic action, and abrasion. Trenhaile (2005) ESPL 30 finds that platform gradient increases with tidal range; with slow downwearing, platform width increases with tidal range (but decreases with fast downwearing); and platform gradient decreases and width increases with wave energy, decreasing rock resistance, and platform roughness. Stephenson and Kirk (2000) Geomorph. 32 argue that waves on platforms are not capable of causing erosion because of their high loss of energy in these shallower waters. Kennedy et al. (2011, ESPL 36, 5, 686) conclude that a New Zealand shore platform is a function of the relative balance between wave energy and weathering, while the width of the platform is related to the ability of waves to dissect the platform along vertical joint lines.