By Patrick Bachelery, Jean-François Lenat, Andrea Di Muro, Laurent Michon
Piton de l. a. Fournaise and Karthala are either safeguard volcanoes within the southwest Indian Ocean. This booklet summarizes the paintings performed on those very lively basaltic volcanoes. Piton de los angeles Fournaise has a protracted background of clinical study and tracking, with many facts accrued in the course of contemporary eruptions. it really is considered one of the main studied volcanoes on the earth. The paintings offered during this monograph comprises geological, geophysical, geochemical and petrological elements, but in addition experiences on actual geography, typical dangers and the sociological and behavioural approaches.'
The Karthala volcano should be much less popular, however it serves as an attractive comparability to Piton de los angeles Fournaise. even if located as regards to the volcanoes of Hawaii, it differs from them by way of its extra alkaline magmas and no more common job. It was once additionally monitored for greater than 25 years, generating outstanding eruptions in contemporary years.
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Additional resources for Active Volcanoes of the Southwest Indian Ocean: Piton de la Fournaise and Karthala
For Oehler et al. (2008), they were built gradually by the superimposition and/or juxtaposition of products moved during landslide episodes, involving up to several hundred cubic kilometres of material. Around 50 individual event deposits have been recognized by Oehler et al. (2008). About one third are interpreted as secondary landslides, affecting previously emplaced debris avalanches. The location and geometry of some mass wasting units suggest source areas on land, in accordance with the fact that dredged samples at the surface of the deposits often have a clear subaerial origin (Cochonat et al.
Preliminary interpretations using the most recent data have been published by Le Friant et al. (2011), Lebas (2012). It is likely that the submarine geology will be signiﬁcantly reﬁned in the near future, although the major units deﬁned by Oehler et al. (2008) will probably remain largely unchanged. The geological maps of Oehler et al. (2008), Lebas (2012) (for the eastern slope) show surface rocks resulting from both constructional and destruction processes. Few constructional features (cones, eroded piles of lava flows) have been recognized on the submarine surface, and, of these, most are located close to the coast in continuation of the on land southwest and northeast rift zones of Piton de la Fournaise.
Gauthier-Villars, Paris, p 57 Lacroix A (1942) Une éruption du Piton de la Fournaise (Ile de la Réunion) en 1942. C R Acad Sci Paris 215:517–518 Lislet-Geoffroy JB (1890) Voyage au volcan de Bourbon en 1772 (note: or more probably in 1771). Revue historique et littéraire de l’Ile Maurice: archives coloniales 3(2):361–365 Maillard L (1853) Note sur l’île de la Réunion. Bulletin de la Société Géologique de France. Bull Soc Geol Fr 10:499–505 Maillard L (1862) Notes sur l’île de la Réunion (Bourbon).