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      Late Holocene history of Chaitén Volcano: New evidence for a 17th century eruption Translated title: Historia holoceno tardía del volcán Chaitén: nueva evidencia de una erupción en el siglo XVII

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          Abstract

          Prior to May 2008, it was thought that the last eruption of Chaitén Volcano occurred more than 5,000 years ago, a rather long quiescent period for a volcano in such an active arc segment. However, increasingly more Holocene eruptions are being identified. This article presents both geological and historical evidence for late Holocene eruptive activity in the 17th century (AD 1625-1658), which included an explosive rhyolitic eruption that produced pumice ash fallout east of the volcano and caused channel aggradation in the Chaitén River. The extents of tephra fall and channel aggradation were similar to those of May 2008. Fine ash, pumice and obsidian fragments in the pre-2008 deposits are unequivocally derived from Chaitén Volcano. This finding has important implications for hazards assessment in the area and suggests the eruptive frequency and magnitude should be more thoroughly studied.

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          Most cited references33

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          Sediment yield following severe volcanic disturbance—A two-decade perspective from Mount St. Helens

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            Fluvial sediment transport and deposition following the 1991 eruption of Mount Pinatubo

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              The 2008 eruption of the Chaitén Volcano, Chile-a preliminary report

              L Lara (2009)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                andgeol
                Andean geology
                AndGeo
                Servicio Nacional de Geología y Minería (SERNAGEOMIN) (Santiago )
                0718-7106
                May 2013
                : 40
                : 2
                : 249-261
                Affiliations
                [1 ] Servicio Nacional de Geología y Minería Chile
                [2 ] Universidad Adolfo Ibáñez Chile
                [3 ] United States Geological Survey USA
                Article
                S0718-71062013000200004
                10.5027/andgeoV40n2-a04
                7479b5f3-25f3-42b5-beba-f340005769dc

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Chile

                Self URI (journal page): http://www.scielo.cl/scielo.php?script=sci_serial&pid=0718-7106&lng=en
                Categories
                GEOLOGY
                GEOSCIENCES, MULTIDISCIPLINARY

                General geosciences,Geology & Mineralogy
                Historical eruption,Ash fallout,Channel aggradation,Chaitén Volcano,Erupción histórica,Caída de ceniza,Agradación de canal,Volcán Chaitén

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