Prehistoric tsunamis are tsunamis and so-called "megatsunamis " that occurred before recorded history. The events have been identified through oral tradition and/or geological evidence. Those events that have been identified through contemporary records are listed as historic tsunamis .
Approx. date
Location
Cause
Evidence for tsunami
66 million years BP
Chicxulub crater , Yucatan
asteroid strike
presumed[ 1] [ 2]
35.5 million years BP
Chesapeake Bay
bolide impact
presumed[ 3]
10,000 yrs BP
Seton Portage, British Columbia
landslide into lake
presumed[ 4]
8,000 years BP
Mount Etna , Sicily
volcanic landslide
submarine sediments off Etna, submerged settlements off eastern Mediterranean coast, e.g. Atlit Yam [ 5] [ 6]
8,000 years BP
Norwegian Sea
submarine landslip (Storegga Slide )
deposited sediments in Scotland[ 7] [ 8]
5,500 BP
Northern Isles
tsunami (Garth tsunami )
deposits and contemporaneous mass burials[ 9]
4,000 BP
Réunion island
landslide
presumed[ 10]
^ Bryant, Edward (June 2014). Tsunami: The Underrated Hazard . Springer. p. 178. ISBN 978-3-319-06133-7 .
^ Renne, Paul R.; Deino, Alan L.; Hilgen, Frederik J.; Kuiper, Klaudia F.; Mark, Darren F.; Mitchell, William S.; Morgan, Leah E.; Mundil, Roland; Smit, Jan (7 February 2013). "Time Scales of Critical Events Around the Cretaceous-Paleogene Boundary" (PDF) . Science . 339 (6120): 684–687. Bibcode :2013Sci...339..684R . doi :10.1126/science.1230492 . PMID 23393261 . S2CID 6112274 .
^ Poag, C. Wiley. Chesapeake Invader: Discovering America's Giant Meteorite Crater. Princeton, NJ: Princeton University Press, 1999. ISBN 0-691-00919-8
^ "SetonPortage.ca website" . Archived from the original on 2009-01-13. Retrieved 2009-05-15 .
^ Than, Ker (2006-11-30). "Ten-Story Tsunami Thrashed Mediterranean 8,000 Years Ago" . Fox News. Retrieved 2005-12-20 .
^ Hecht, Jeff (2006-12-13). "How Etna's Neolithic Hiccup Set Off a Tsunami" . New Scientist. Retrieved 2005-12-20 .
^ Bondevik, Stein; Dawson, Sue; Dawson, Alastair; Lohne, Øystein (5 August 2003). "Record-breaking Height for 8000-Year-Old Tsunami in the North Atlantic" (PDF) . Eos, Transactions, American Geophysical Union . 84 (31): 289, 293. Bibcode :2003EOSTr..84..289B . doi :10.1029/2003EO310001 . hdl :1956/729 . Retrieved 2007-01-15 .
^ Bondevik, S; Lovholt, F; Harbitz, C; Stormo, S; Skjerdal, G (2006). "The Storegga Slide Tsunami – Deposits, Run-up Heights and Radiocarbon Dating of the 8000-Year-Old Tsunami in the North Atlantic". American Geophysical Union meeting .
^ Cain, Genevieve; Goff, James; McFadgen, Bruce (1 June 2019). "Prehistoric Coastal Mass Burials: Did Death Come in Waves?" . Journal of Archaeological Method and Theory . 26 (2): 714–754. doi :10.1007/s10816-018-9386-y . ISSN 1573-7764 .
^ Mega-tsunami: Wave of Destruction . Background article. BBC Two television programme first broadcast 12 October 2000