Active Volcanoes of the Southwest Indian Ocean: Piton de la

Piton de l. a. Fournaise and Karthala are either defend volcanoes within the southwest Indian Ocean. This book summarizes the paintings performed on those very lively basaltic volcanoes. Piton de l. a. Fournaise has a protracted heritage of medical examine and tracking, with many information accrued in the course of fresh eruptions. it really is one in every of the main studied volcanoes on the planet. The paintings awarded during this monograph comprises geological, geophysical, geochemical and petrological elements, but additionally reports on actual geography, ordinary dangers and the sociological and behavioural approaches.'

The Karthala volcano might be much less renowned, however it serves as a fascinating comparability to Piton de los angeles Fournaise. even supposing positioned on the subject of the volcanoes of Hawaii, it differs from them through its extra alkaline magmas and no more common job. It used to be additionally monitored for greater than 25 years, generating notable eruptions in recent times.

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2), but extend farther offshore (about 38 km) and cover a wider area (about 36 km near the seashore). Both positive and negative anomalies are observed, although the latter cover a larger surface. The presence of negative and positive anomalies indicates that the ES construction spans successive paleomagnetic epochs. 78 Ma). 3 Ma). Most of this large structure is buried by subsequent mass wasting and sedimentary products. Using the same approach, Gailler and Lénat (2010) establish that the magnetic anomalies on the eastern submarine flank are caused by the presence of large, now buried volcanic constructions spanning at least the Brunhes and Matuyama paleomagnetic epochs.

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.

3), but the predicted bathymetry of Smith and Sandwell (1997) provides complete low resolution coverage. Linear ridges and grabens are observed along the transform faults. Studies in various places suggest that magmatic activity can take place at transform faults near spreading centers or by interaction with hotspot plumes (Hekinian and Bideau 1995; Lowrie et al. 1986; Pockalny et al. 1997). Another classic interpretation for uplift and subsidence along oceanic transform faults is differential thermal subsidence and bending (Sandwell and Schubert 1982) or shear heating and lateral heat conduction across the fault (Chen 1988) when two lithospheres of different age are brought into contact.

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