Download Geophysics of the Canary Islands by Peter Clift, Juan Acosta PDF

By Peter Clift, Juan Acosta

This booklet comprises the result of a nine 12 months (1995-2004) research of the Canary Islands unique financial quarter, utilizing state-of-the-art expertise. The insurance encompasses a multibeam survey demonstrating the significance of catastrophic disasters of the Canary Islands; a comparability of the morphology of the Canary Islands with Hawaii; evaluate of hydrothermal job linked to Mesozoic salt diapirs; and lots of extra articles.

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Extra resources for Geophysics of the Canary Islands

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If it is a plane of separation it would imply that as the avalanche traveled down slope it broke apart into two or more segments with the upper one being perched on the flank of the subaerial segment of the volcanic edifice. Another factor that controlled the physical aspects of inshore/offshore composite avalanches is the location of the volcano whose collapse contributed to the avalanche. For example the 3500 m high Pliocene Roque Nublo cone was built in the center of Gran Canaria. The Roque Nublo breccia, formed by one or more subaerial volcanic debris avalanches created by the collapse of the cone, had to travel 10 to 20 km via barrancos to reach the coast.

Masson et al. (2002) rejected the model that suggests that the offshore avalanches, at least in Tenerife, were the result of the collapse of the wall of the crater. According to them such a model is not supported by the volume assessment of the offshore avalanche, or by offshore mapping evidence. However, offshore volume measurements are too uncertain as to be more than educated guesses. The avalanche deposits are acoustically opaque, so that low energy single channel reflection profiles used in most investigations only provide information on their surface configuration.

1993, Evolución geológica y magmática de la isla de Lanzarote (Islas Canarias), Rev. Acad. Canar. , V, 25–58. , de la Nuez, J. , 2001, Geology and volcanology of La Palma and El Hierro, western Canaries. Estud. , 57, 175– 273. , 1967, Nota previa sobre la geología del complejo basal de la isla de La Gomera, Inst. ‘Lucas Mallada’, Estud. , 23, 71–79. , 1973, Las series volcánicas en subsuelos de Tenerife, Estud. , 29, 491–512. , Fúster, J. , Diaz de Terán, J. R. , 1992, Evolution of the eastern volcanic ridge of the Canary Islands based on new K-Ar data, J.

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