Geology

Download Active Volcanoes of the Southwest Indian Ocean: Piton de la PDF

Piton de los angeles Fournaise and Karthala are either defend volcanoes within the southwest Indian Ocean. This ebook summarizes the paintings performed on those very lively basaltic volcanoes. Piton de l. a. Fournaise has an extended background of clinical study and tracking, with many facts accumulated in the course of contemporary eruptions. it's one in every of the main studied volcanoes on the planet. The paintings provided during this monograph comprises geological, geophysical, geochemical and petrological facets, but in addition stories on actual geography, average dangers and the sociological and behavioural approaches.'

The Karthala volcano will be much less popular, however it serves as an engaging comparability to Piton de los angeles Fournaise. even if located just about the volcanoes of Hawaii, it differs from them by means of its extra alkaline magmas and not more widespread task. It used to be additionally monitored for greater than 25 years, generating amazing eruptions lately.

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Additional resources for Active Volcanoes of the Southwest Indian Ocean: Piton de la Fournaise and Karthala (Active Volcanoes of the World)

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If the “Roches Pintades Series” is associated with Les Alizés, the latter would have reached a stage of transition from a basaltic shield-building stage to a more differentiated stage between at least 535 and 400–450 ka. The evolution of Les Alizés volcano is still more speculative after this period. , the summit of the edifice could have reached at least 1500–2500 m in elevation if we compare to similar sites such as Piton des Neiges or Hawaii (Ryan 1987). With no remnants of such an edifice above about 1000–1200 m in elevation (“Roches Pintades”), it must be assumed that there were catastrophic destruction processes involved.

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? C R Acad Sci Paris Sci de la Terre et des Planètes Earth Planet Sci 330:777–783 Bissessur, PD (2011) Structure, age and evolution of the Mascarene Basin, Western Indian Ocean.

The magnetic anomaly pattern suggests a progressive southward extinction of the spreading center (67 Ma in the north and about 61 Ma in the south). 1 La Réunion and the Surrounding Lithosphere Characteristics of the Oceanic Compartment of La Réunion La Réunion lies in the middle of an approximately 350 km-wide zone bounded by the Mauritius transform fault (Mauritius Fracture Zone or FZ) to the SE and by the Mahanoro-Wilshaw transform fault (Mahanoro-Wilshaw Fracture Zone or FZ) to 25 the NW (Fig.

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