(Article of periodic en Anglais - 1996)

Document title

Optical dating of tsunami-laid sands

Authors(s) and Affiliation(s)

(1) Dept. of Physics, Simon Fraser University, Burnaby, British Columbia, CANADA


The ages of some tsunami deposits can be determined by optical dating, a key requirement being that the deposits are derived from sediment that was reworked and exposed to daylight by tidal currents, waves, wind or bioturbation during the last years before the tsunami. Historical records and radiocarbon dating show that the sand at each of the 3 sites, near Tofino and Port Alberni on Vancouver Island, is 150 to 400 yr old than the optical ages. These optical ages support the hypothesis that the Vancouver Island sands were deposited by a tsunami generated by a large earthquake on the Cascadia subduction zone about 300 yr ago


Article of periodic

published at : Quaternary research / ISSN 0033-5894 / CODEN QRESAV

Editor : Elsevier, San Diego, CA - ETATS-UNIS (1970)

Millesime : 1996, vol. 46, no2 [pp. 127-140]

Bibliographic references : 53 ref.

Collation : Illustration ;



INIST-CNRS, Cote INIST : 15739

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1997.
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