(3) Diluvial forests are the ones created due to flood in shore or river banks. Andaman has growth of mangrove and other (every green types)ocean based flora. These flora which flourishes as a result of ocean flood is called deluvial forest. Diluvium is a term in geology for superficial deposits formed by flood-like operations of water, and so contrasted with alluvium or alluvial deposits formed by slow and steady aqueous agencies. The term was formerly given to the boulder clay deposits, supposed to have been caused by the Noachian deluge.