Jm. Cantagrel et al., Repeated debris avalanches on Tenerife and genesis of Las Canadas caldera wall (Canary Islands), GEOLOGY, 27(8), 1999, pp. 739-742
Geologic evidence on Tenerife, Canary Islands, indicates six successive nor
th-directed debris avalanche events, including: the Anaga and Teno (ca. 6 M
a) events that affected the old basaltic series, and the Tigaiga (>2.3 Ma).
Roques de Garcia (possibly 0.6-0.7 Ma). Orotava (ca. 0.6 Ma), and Icod (<0
.15 Ma) avalanche events that affected the Canadas and Dorsal volcanic edif
ices. The approximate total volume (>1000 km(3)) inferred for these events
can account for the volume of previous estimates of offshore volcanic debri
s, These repeated flank failures can also account for the present morpholog
y of Las Canadas caldera wall, which partly bounds a multiepisodic lateral-
collapse structure 25 km wide.