Introduction

Moufti, Mohammed Rashad; Németh, Károly

doi:10.1007/978-3-319-33015-0_1

Cited by 1 publication

(1 citation statement)

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“…Thus, once this limit is exceeded, small mass additions can generate debris avalanches [31,32]. Also, the presence of a huge amount of lava in the crater or at the base of the cone could have favored the collapse [14,[33][34][35].…”

Section: Evolution Of Mazo Eruption and Causes Of The Flank Collapsementioning

confidence: 99%

Syn-Eruptive Lateral Collapse of Monogenetic Volcanoes: The Case of Mazo Volcano from the Timanfaya Eruption (Lanzarote, Canary Islands)

Romero¹,

Galindo²,

Sánchez³

et al. 2021

Updates in Volcanology - Transdisciplinary Nature of Volcano Science

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The evolution of complex volcanic structures usually includes the occurrence of flank collapse events. Monogenetic cones, however, are more stable edifices with minor rafting processes that remove part of the cone slopes. We present the eruptive history of Mazo volcano (Lanzarote, Canary Islands), including the first detailed description of a syn-eruptive debris avalanche affecting a volcanic monogenetic edifice. The study and characterization, through new geological and morphological data and the analysis of a great number of documentary data, have made it possible to reinterpret this volcano and assign it to the Timanfaya eruption (1730–1736). The eruptive style evolved from Hawaiian to Strombolian until a flank collapse occurred, destroying a great part of the edifice, and forming a debris avalanche exhibiting all the features that define collapsing volcanic structures. The existence of blocks from the substrate suggests a volcano-tectonic process associated with a fracture acting simultaneously with the eruption. The sudden decompression caused a blast that produced pyroclasts that covered most of the island. This study forces to change the current low-hazard perception usually linked to monogenetic eruptions and provides a new eruptive scenario to be considered in volcanic hazards analysis and mitigation strategies development.

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