Is there always salt deposit associated with a tsunami?
YES, salt sediment deposit is almost always associated with a tsunami. In fact, the study of this deposit allows palaeontologist to trace similar historical events. For instance in Japan , a recent study on 13 tsunamis which occurred between 1026 and 1933, show that the thickness of deposit on the flooded soil may vary from 30 cm up to 1 meter depending on the run-up of the tsunami.
