Piton de los angeles Fournaise and Karthala are either protect volcanoes within the southwest Indian Ocean. This booklet summarizes the paintings performed on those very energetic basaltic volcanoes. Piton de los angeles Fournaise has an extended background of medical learn and tracking, with many facts amassed in the course of fresh eruptions. it truly is one in all the main studied volcanoes on this planet. The paintings offered during this monograph comprises geological, geophysical, geochemical and petrological features, but additionally stories on actual geography, normal dangers and the sociological and behavioural approaches.'
The Karthala volcano should be much less renowned, however it serves as an attractive comparability to Piton de l. a. Fournaise. even supposing positioned with regards to the volcanoes of Hawaii, it differs from them by means of its extra alkaline magmas and not more widespread job. It used to be additionally monitored for greater than 25 years, generating remarkable eruptions lately.
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Extra info for Active Volcanoes of the Southwest Indian Ocean: Piton de la Fournaise and Karthala (Active Volcanoes of the World)
2009) have analysed this anomaly by comparing the actual bathymetry corrected for sediment load with a theoretical bathymetry based on the thermal subsidence of the oceanic lithosphere as a function of its age. They found a substantial depth anomaly, reaching several hundreds of meters, bounded by steep gradients corresponding to the transform faults and the fossil ridge. These authors have carried out analogue modelling to explore the deformation resulting from a mantle plume rising beneath a faulted lithosphere.
At its southern tip there is a substantial seamount with a clear 120°N elongation. A different type of individual seamount is observed to the north-east of the island (Oehler et al. 2008) (Fig. 3). These seem to have a pristine morphology and are well-shaped flat-topped seamounts. Oehler et al. describe two of them that appear to have grown on the lower submarine flank of La Réunion and must therefore be young constructions. References Bernard A, Munschy M (2000) Were the Mascarene and Laxmi Basins (western Indian Ocean) formed at the same spreading centre?
The submarine bulges are essentially built of mass wasting products and sediments. The island is surrounded by a belt of hyaloclastites and pillow lavas. A few volcanic constructional features (cones, eroded piles of lava flows) have been found on the submarine flanks, with the majority being located close to the coast in continuation of the on land southwest and northeast rift zones of Piton de la Fournaise. -F. fr © Springer-Verlag Berlin Heidelberg 2016 P. Bachèlery et al. -F. Lénat constructions, mostly buried beneath mass wasting and sedimentary deposits, to the SW and E of the island, extending tens of kilometres offshore.
Active Volcanoes of the Southwest Indian Ocean: Piton de la Fournaise and Karthala (Active Volcanoes of the World)