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  1. 1. Tombolo Longshore Drift moves material along the coast a ridge of sand and shingle joining the mainland to an island  
  2. 3.   <ul><li>  </li></ul>Tombolo Chesil Beach is one of the most famous examples of a tombolo.... &quot;18 miles and 180 billion pebbles&quot;
  3. 4. &quot;On Chesil Beach&quot; novel by Iain McEwan..   &quot;...Edward and Florence had always planned to wander the shingle .... 'They were going to collect stones along the way and compare their sizes to see if storms really had brought order to the beach.'
  4. 5. <ul><li>Spits and tombolos are deposition features </li></ul><ul><li>  </li></ul><ul><li>Such features develop where </li></ul><ul><li>  </li></ul><ul><li>-there is plenty of beach material -sand, shingle, pebbles </li></ul><ul><li>-the waters are shallow enough to let deposits build up </li></ul><ul><li>- longshore drift moves material along the coast </li></ul><ul><li>When there is a change in the direction of the coastline , the longshore drift will continue to transport the materials in the original direction to the sea. </li></ul><ul><li>The materials are deposited as they enter the water. Over time, these materials build up above the water, and a spit is formed. </li></ul><ul><li>The spit continues to grow as materials are continuously deposited. The spit eventually joins a nearby island to the mainland, forming a tombolo. </li></ul>