Large deltas and barrier island complexes may be missing in glaciated regions. Deep incision by submarine canyons is restricted to the continental slope. Trailing edge coast where the opposite side of the continent is also a trailing edge. Many characteristics are similar to amero-trailing edge coasts. However streams typically drain from the interior of the continent.
Drainage basins are slightly smaller and sediment supply is less resulting in narrower margins.
Deltas and barrier islands are common secondary features. Those coasts that are in semi-protected environments. These factors coupled with the age of the coast determine the width of the continental shelf. Wave energy is greatly dissipated across a wide continental shelf. Collision coasts with narrow margins would have higher waves that a sheltered marginal sea coast or a trailing edge coast with a broad shelf.