Quimsachata

Quimsachata-Oroscocha

溶岩ドーム · Peru · 3848m

A lava flow at Quimsachata scoria cone is visible in this October 2020 Planet Labs satellite image monthly mosaic (N is at the top). The flow erupted about 11,500 years ago and is approximately 4.7 km in the NW-SE direction. The smaller lava flow directly to the north was erupted from the Oroscocha lava dome about 6,400 years ago. These are the northernmost young volcanic centers in Perú. · 写真: Satellite image courtesy of Planet Labs Inc., 2020 (https://www.planet.com/).

タイプ: 溶岩ドーム
国: Peru
地域: South America Volcanic Regions / Central Andean Volcanic Arc
標高: 3848m
座標: -14.131, -71.363
最終噴火: -4450年
テクトニクス環境: Subduction zone / Continental crust (> 25 km)
火山地形: Minor (Silicic)
主要岩石: Rhyolite

地質学的概要

The Quimsachata-Oroscocha group consists of two late Pleistocene and Holocene monogenetic volcanoes at the foot of the Cordillera Oriental, far east of the main volcanic front. Quimsachata is a high-potassium andesitic scoria cone surrounded by a lava shield that was erupted in flat terrain along the Vilcanota River about 11,500 years ago. Oroscocha is a rhyolitic lava dome with a short, thick lava flow erupted from a N-S-trending fissure about 6,400 years ago.

Wikipedia の要約

英語版の要約

Quimsachata is dormant lava dome volcano located in the Andes of Peru. It is located in the Cusco Region, Canchis Province at about 24 kilometres (15 mi) northwest of the town of Sicuani. This volcano is constructed from two separate centres, one active 11,500 years ago which formed a scoria cone and a lava field and another active 4450 BCE which formed two lava flows and a lava dome.

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噴火履歴

概要 (VEI時系列)

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詳細タイムライン

紀元前 4450年VEI ?地質学的推定
BCE 4450 ~ 進行中
Oroscocha

外部リンク

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