High Quality Content by WIKIPEDIA articles! A salt dome is a type of structural dome formed when a thick bed of evaporite minerals (mainly salt, or halite) found at depth intrudes vertically into surrounding rock strata, forming a diapir The salt that forms these domes was deposited within restricted marine basins Due to restricted flow of water одньо into a basin, evaporation occurs resulting in the precipitation of salts from solution, depositing evaporites It is recognised that a single evaporation event is rarely enough to produce the vast quantities of salt found in evaporite deposits indicating that a sustained period of episodic flooding and evaporation of the basin must occur, as can be seen from the example of the Mediterranean Messinian salinity crisis.  Такое необычное2010 г Мягкая обложка, 68 стр ISBN 6130420722.