Age of the Tura Mega-Tsunami Event on the Southeastern Coast of Australia Add-Ed Studies in Geography No 1 (original) (raw)
The Tura mega-tsunami event documented from bedrock erosion and deposits on the southeast coast of Australia is not related to the Lanai tsunami events in Hawaii ca 105 ka. Instead, it forms the most recent cosmogenic mega-tsunami event evident along 600 km of coast with a probable date of 1500±85 AD. The tsunami wave approached Tura Point from the northeast, whereas 100 km northwards the direction of approach was reversed. A similar age from tsunami deposits in New Zealand facing the Pacific Ocean and at Kauai, Hawaii 7300 km to the north implies that the comet/meteorite producing the Tura event struck further east, in the Southwest Pacific Ocean. Maori legends dating around the same time support a meteorite or comet impact. A secondary fragment striking the Tasman Sea north of Tura Point, New South Wales, Australia cannot be ruled out. The resulting mega-tsunami had major erosional and deposition impacts on mainland and island shorelines in the region.
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