Overview of Chaitén Volcano, Chile, and its 2008-2009 eruption

Chaitén Volcano erupted unexpectedly in May 2008 in one of the largest eruptions globally since the 1990s. It was the largest rhyolite eruption since the great eruption of Katmai Volcano in 1912, and the first rhyolite eruption to have at least some of its aspects monitored. The eruption consisted o...

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Main Authors: Jon J. Major, Luis E. Lara
Format: Article
Language:English
Published: Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2013-05-01
Series:Andean Geology
Subjects:
Online Access:http://www.andeangeology.cl/index.php/revista1/article/view/V40n2-a01
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author Jon J. Major
Luis E. Lara
author_facet Jon J. Major
Luis E. Lara
author_sort Jon J. Major
collection DOAJ
description Chaitén Volcano erupted unexpectedly in May 2008 in one of the largest eruptions globally since the 1990s. It was the largest rhyolite eruption since the great eruption of Katmai Volcano in 1912, and the first rhyolite eruption to have at least some of its aspects monitored. The eruption consisted of an approximately 2-week-long explosive phase that generated as much as 1 km3 bulk volume tephra (~0.3 km3 dense rock equivalent) followed by an approximately 20-month-long effusive phase that erupted about 0.8 km3 of high-silica rhyolite lava that formed a new dome within the volcano’s caldera. Prior to its eruption, little was known about the eruptive history of the volcano or the hazards it posed to society. This edition of Andean Geology contains a selection of papers that discuss new insights on the eruptive history of Chaitén Volcano, and the broad impacts of and new insights obtained from analyses of the 2008-2009 eruption. Here, we summarize the geographic, tectonic, and climatic setting of Chaitén Volcano and the pre-2008 state of knowledge of its eruptive history to provide context for the papers in this edition, and we provide a revised chronology of the 2008-2009 eruption.
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spelling doaj.art-2376493f048442d795ea101cabe0c35b2023-10-11T15:41:18ZengServicio Nacional de Geología y Minería (SERNAGEOMIN)Andean Geology0718-70920718-71062013-05-0140219621510.5027/andgeoV40n2-a01Overview of Chaitén Volcano, Chile, and its 2008-2009 eruptionJon J. Major0Luis E. Lara1United States Geological Survey, Cascades Volcano Observatory, 1300 SE Cardinal Court, Vancouver, Washington, 98683, USA.Servicio Nacional de Geología y Minería, Programa de Riesgo Volcánico, Avda. Santa María 0104, Santiago, ChileChaitén Volcano erupted unexpectedly in May 2008 in one of the largest eruptions globally since the 1990s. It was the largest rhyolite eruption since the great eruption of Katmai Volcano in 1912, and the first rhyolite eruption to have at least some of its aspects monitored. The eruption consisted of an approximately 2-week-long explosive phase that generated as much as 1 km3 bulk volume tephra (~0.3 km3 dense rock equivalent) followed by an approximately 20-month-long effusive phase that erupted about 0.8 km3 of high-silica rhyolite lava that formed a new dome within the volcano’s caldera. Prior to its eruption, little was known about the eruptive history of the volcano or the hazards it posed to society. This edition of Andean Geology contains a selection of papers that discuss new insights on the eruptive history of Chaitén Volcano, and the broad impacts of and new insights obtained from analyses of the 2008-2009 eruption. Here, we summarize the geographic, tectonic, and climatic setting of Chaitén Volcano and the pre-2008 state of knowledge of its eruptive history to provide context for the papers in this edition, and we provide a revised chronology of the 2008-2009 eruption.http://www.andeangeology.cl/index.php/revista1/article/view/V40n2-a01chaitén volcanorhyoliteexplosive eruptionash falllava domepyroclastic density currentlaharenvironmental impactecological disturbanceholocene stratigraphygeophysical monitoring.
spellingShingle Jon J. Major
Luis E. Lara
Overview of Chaitén Volcano, Chile, and its 2008-2009 eruption
Andean Geology
chaitén volcano
rhyolite
explosive eruption
ash fall
lava dome
pyroclastic density current
lahar
environmental impact
ecological disturbance
holocene stratigraphy
geophysical monitoring.
title Overview of Chaitén Volcano, Chile, and its 2008-2009 eruption
title_full Overview of Chaitén Volcano, Chile, and its 2008-2009 eruption
title_fullStr Overview of Chaitén Volcano, Chile, and its 2008-2009 eruption
title_full_unstemmed Overview of Chaitén Volcano, Chile, and its 2008-2009 eruption
title_short Overview of Chaitén Volcano, Chile, and its 2008-2009 eruption
title_sort overview of chaiten volcano chile and its 2008 2009 eruption
topic chaitén volcano
rhyolite
explosive eruption
ash fall
lava dome
pyroclastic density current
lahar
environmental impact
ecological disturbance
holocene stratigraphy
geophysical monitoring.
url http://www.andeangeology.cl/index.php/revista1/article/view/V40n2-a01
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