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Título : The 1730-1736 eruption of Lanzarote, Canary Islands: a long, high magnitude basaltic fissure eruption
Autor : Carracedo, Juan Carlos ; Rodríguez Badiola, Eduardo ; Soler, Vicente
Palabras clave : Historic eruption
High-magnitude basaltic fissure eruption
Canary Islands
Fecha de publicación : nov-1992
Editor: Elsevier
Citación : Journal of Volcanology and Geothermal Research 53(1-4): 239-250 (1992)
Resumen: The eruption that took place in Lanzarote between 1 September 1730 and 16 April 1736 differs from the normal style of the historic (last 500 years) volcanism of the Canary Islands. The duration (2,056 days), extent (200 km2), volume of materials emitted (3-5 km3) and the evolution of magmas from extremely SiO2-undersaturated lavas (melanephelinites) towards olivine tholeiite compositions are quite unique in the historic trend of volcanism in the Archipelago, and, apparently, even in the Earth's historical record of basaltic fissure eruptions. However, no specific work has been undertaken until now to attempt the reconstruction of this eruption. We present here a detailed reconstruction of the eruption, based on field observations and data provided by eye-witness accounts, one of which is a hitherto unpublished manuscript. The "anomalous" nature of this eruption in relation to the historic volcanism of the Canaries--especially the continuation of the eruption after the initial phase was completed (some 3-4 months, the maximum duration of any historic eruption in the Canarian Archipelago )--might be the result of upward movement of the magma generation front to an intermediate depth along a large fracture.
Descripción : Comments and suggestions by P. Armienti, C. Newhall, R. Batiza and an anonymous reviewer led to significant improvements in the manuscript and are greatly appreciated.
Versión del editor: http://dx.doi.org/10.1016/0377-0273(92)90084-Q
URI : http://hdl.handle.net/10261/3199
DOI: 10.1016/0377-0273(92)90084-Q
ISSN: 0377-0273
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