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Repeated debris avalanches on Tenerife and genesis of Las Cañadas caldera wall (Canary Islands)

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Cantagrel, Jean Marie and Arnaud, Nicolas O. and Ancochea Soto, Eumenio and Fúster Casas, José María and Huertas Coronel, María José (1999) Repeated debris avalanches on Tenerife and genesis of Las Cañadas caldera wall (Canary Islands). Geology (Boulder Colo.), 27 (8). pp. 739-742. ISSN 0091-7613

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Abstract

Geologic evidence on Tenerife, Canary Islands, indicates six successive north-directed
debris avalanche events, including: the Anaga and Teno (ca. 6 Ma) events that affected the old
basaltic series, and the Tigaiga (>2.3 Ma), Roques de García (possibly 0.6–0.7 Ma), Orotava
(ca. 0.6 Ma), and Icod (<0.15 Ma) avalanche events that affected the Cañadas and Dorsal volcanic
edifices. The approximate total volume (>1000 km3) inferred for these events can account
for the volume of previous estimates of offshore volcanic debris. These repeated flank failures
can also account for the present morphology of Las Cañadas caldera wall, which partly bounds
a multiepisodic lateral-collapse structure 25 km wide.


Item Type:Article
Uncontrolled Keywords:The Cañadas volcanic, Tenerife, Canary Islands, Avalanche events
Subjects:Sciences > Geology > Petrology
ID Code:25531
Deposited On:26 May 2014 11:27
Last Modified:26 May 2014 11:27

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