Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile
The 2008 eruption of Chaitén Volcano was widely cited as the first activity at the volcano for over 9000 years. However, we have identified evidence from proximal pyroclastic deposits for three additional explosive eruptions of Chaitén within the past 5000 years. Chaitén has therefore produced at le...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Servicio Nacional de Geología y Minería (SERNAGEOMIN)
2013-05-01
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| Series: | Andean Geology |
| Subjects: | |
| Online Access: | http://www.andeangeology.cl/index.php/revista1/article/view/V40n2-a02 |
| _version_ | 1797661660028076032 |
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| author | Sebastian F.L. Watt David M. Pyle Tamsin A. Mather |
| author_facet | Sebastian F.L. Watt David M. Pyle Tamsin A. Mather |
| author_sort | Sebastian F.L. Watt |
| collection | DOAJ |
| description | The 2008 eruption of Chaitén Volcano was widely cited as the first activity at the volcano for over 9000 years. However, we have identified evidence from proximal pyroclastic deposits for three additional explosive eruptions of Chaitén within the past 5000 years. Chaitén has therefore produced at least five explosive eruptions in the Holocene, making it among the most active volcanoes, in terms of explosive output, in the southern part of the Andean Southern Volcanic Zone. All of the five identified Holocene explosive eruptions produced homogeneous high-silica rhyolite, with near identical compositions. Based on our pyroclastic sequence, we suggest that the largest-volume Holocene eruption of Chaitén occurred at ~4.95 ka, and we correlate this with the Mic2 deposit, which was previously thought to originate from the nearby Michinmahuida Volcano. |
| first_indexed | 2024-03-11T18:47:45Z |
| format | Article |
| id | doaj.art-a3e4b5a629a04ef3b36de7682f96e535 |
| institution | Directory Open Access Journal |
| issn | 0718-7092 0718-7106 |
| language | English |
| last_indexed | 2024-03-11T18:47:45Z |
| publishDate | 2013-05-01 |
| publisher | Servicio Nacional de Geología y Minería (SERNAGEOMIN) |
| record_format | Article |
| series | Andean Geology |
| spelling | doaj.art-a3e4b5a629a04ef3b36de7682f96e5352023-10-11T15:38:59ZengServicio Nacional de Geología y Minería (SERNAGEOMIN)Andean Geology0718-70920718-71062013-05-0140221622610.5027/andgeoV40n2-a02Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, ChileSebastian F.L. Watt0David M. Pyle1Tamsin A. Mather2Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, U.KDepartment of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, U.KDepartment of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, U.KThe 2008 eruption of Chaitén Volcano was widely cited as the first activity at the volcano for over 9000 years. However, we have identified evidence from proximal pyroclastic deposits for three additional explosive eruptions of Chaitén within the past 5000 years. Chaitén has therefore produced at least five explosive eruptions in the Holocene, making it among the most active volcanoes, in terms of explosive output, in the southern part of the Andean Southern Volcanic Zone. All of the five identified Holocene explosive eruptions produced homogeneous high-silica rhyolite, with near identical compositions. Based on our pyroclastic sequence, we suggest that the largest-volume Holocene eruption of Chaitén occurred at ~4.95 ka, and we correlate this with the Mic2 deposit, which was previously thought to originate from the nearby Michinmahuida Volcano.http://www.andeangeology.cl/index.php/revista1/article/view/V40n2-a02chaitén volcanoandean southern volcanic zoneholocene tephra stratigraphyrhyoliteexplosive volcanism |
| spellingShingle | Sebastian F.L. Watt David M. Pyle Tamsin A. Mather Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile Andean Geology chaitén volcano andean southern volcanic zone holocene tephra stratigraphy rhyolite explosive volcanism |
| title | Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile |
| title_full | Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile |
| title_fullStr | Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile |
| title_full_unstemmed | Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile |
| title_short | Evidence of mid- to late-Holocene explosive rhyolitic eruptions from Chaitén Volcano, Chile |
| title_sort | evidence of mid to late holocene explosive rhyolitic eruptions from chaiten volcano chile |
| topic | chaitén volcano andean southern volcanic zone holocene tephra stratigraphy rhyolite explosive volcanism |
| url | http://www.andeangeology.cl/index.php/revista1/article/view/V40n2-a02 |
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