Georges Boudon, Michel P. Semet, Pierre M. Vincent; Flank failure–directed blast eruption at Soufrière, Guadeloupe, French West Indies: A 3,000-yr-old Mt. St. Helens?. Geology ; 12 (6): 350–353. doi: https://doi.org/10.1130/0091-7613(1984)12<350:FFBEAS>2.0.CO;2
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An extensive, apparently monogenic, debris-flow deposit in the Basse-Terre-St. Claude area of southern Guadeloupe is contemporaneous with pyroclastic surge deposits that cover an area of at least 60 km2. These 3,000-yr-old deposits were emplaced by the avalanching of a sector of Soufrière volcano and an associated directed blast similar to the 1956 Bezymianni and the May 18, 1980, Mt. St. Helens eruptions.