(Article of periodic en Anglais - 2006)

Document title

Fan beheading and drainage diversion as evidence of a 3200-2800 BP earthquake event in the Esmeraldas-Tumaco seismic zone : a case study for the effects of great subduction earthquakes


This paper provides evidence for a succession of geomorphic changes charcterized by the disruption of the Quaternary drainage network and the reshaping of the Cayapas-Santiago estuary. The increase of the discharge directed to the Gayapas River generated the change of the channel pattern downstream from the confluence, and the avulsion of a new estuary through the coastal plain. Acording to the dating of beach ridges the avulsion occured in the period 3200-2800 BP. This period corresponds also to a faster accretion of the beach ridge margin, interpreted as a response to a small uplift of the shore


Article of periodic

published at : Geomorphology / ISSN 0169-555X

Editor : Elsevier, Amsterdam - PAYS-BAS (1987)

Millesime : 2006, vol. 74, no1-4 [pp. 100-123]

Bibliographic references : 71 ref.

Collation : Illustration ;



INIST-CNRS, Cote INIST : 21151

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2007.
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