Coastal Deposition Features: Tombolos
What are tombolo's and how are they created?
Tombolo's are ridges of sand and shingle which join the mainland to an island. Tombolo's are created through the process of longshore drift. Where there is a change in the shape of the land, a spit forms in the shallow / sheltered water. A tombolo is formed where the spit continues to grow until it reaches an island, forming a link with the mainland.
Named Example: Chesil Beach (joins the South Dorset Coasts to the Isle of Portland)