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Rapid growth and catastrophic destruction events of Planchón Volcano, Southern Andes
https://nied-repo.bosai.go.jp/records/6775
https://nied-repo.bosai.go.jp/records/6775251a829d-bd1c-4c5e-b12a-4985b2851739
| Item type | researchmap(1) | |||||||||||||||||||
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| 公開日 | 2024-09-16 | |||||||||||||||||||
| タイトル | ||||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| タイトル | Rapid growth and catastrophic destruction events of Planchón Volcano, Southern Andes | |||||||||||||||||||
| 言語 | ||||||||||||||||||||
| 言語 | eng | |||||||||||||||||||
| 著者 |
José Antonio Naranjo
× José Antonio Naranjo
× Jorge Romero
× Juan Pablo Contreras
× Yuji Orihashi
× Kevin Scott
× Miguel Haller
× Hirochika Sumino
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| 抄録 | ||||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||||
| 内容記述 | During the Late Pleistocene-to-Holocene, the mafic Planchón volcano (35.2 °S, Southern Andes) experienced two important destructive events: a sector collapse to the west and a multiphase explosive eruption transforming the east summit area. We provide new field and laboratory evidence, including geochemical, geochronologic, and geological-morphological analysis, to reconstruct the evolution, triggering mechanisms, and physical parameters of these events.The lateral collapse (48~ka BP) was mainly predisposed by a tectonically westward-inclined substratum and rapid edifice growth rates (0.3–0.48 km3 ka-1). The resulting Planchón-Teno debris avalanche became valley-confined traveling at c. 260 km h-1 up to 95 km distance and forming an 8.6 ± 1.3 km3 deposit. The resulting 4.1 km wide amphitheater was later destroyed at c. 7 ka BP by the multiphase Valenzuela phreatomagmatic eruptions, forming a c. 2.5 km diameter caldera. The case of the Planchón volcano warns that rapidly growing mafic volcanoes imply a substantial catastrophic hazard increase for the surrounding areas. | |||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| 書誌情報 |
en : Volcanica 巻 7, 号 1, p. 21-49, 発行日 2024-01-30 |
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| 出版者 | ||||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| 出版者 | Volcanica | |||||||||||||||||||
| ISSN | ||||||||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||||||||
| 収録物識別子 | 2610-3540 | |||||||||||||||||||
| DOI | ||||||||||||||||||||
| 関連識別子 | 10.30909/vol.07.01.2149 | |||||||||||||||||||
