本文へスキップ
← 地図に戻る
⇄ 比較

ウゾン

Uzon

カルデラ · Russia · 1617m

The Uzon and Geyzernaya calderas, containing Kamchatka's largest geothermal area, form a 7 x 18 km depression that formed during the mid-Pleistocene. Post-caldera activity was largely Pleistocene in age, although the Lake Dal'ny maar formed during the early Holocene. This view looks from the SW across the flat caldera floor, which contains numerous lakes, streams, and thermal areas. Sharp-peaked Kronotsky volcano and flat-topped Krasheninnikov volcano appear in the distance beyond the N caldera rim.
The Uzon and Geyzernaya calderas, containing Kamchatka's largest geothermal area, form a 7 x 18 km depression that formed during the mid-Pleistocene. Post-caldera activity was largely Pleistocene in age, although the Lake Dal'ny maar formed during the early Holocene. This view looks from the SW across the flat caldera floor, which contains numerous lakes, streams, and thermal areas. Sharp-peaked Kronotsky volcano and flat-topped Krasheninnikov volcano appear in the distance beyond the N caldera rim. · 写真: Photo by Dan Miller, 1990 (U.S. Geological Survey). · Wikimedia Commons
タイプ
カルデラ
国
Russia
地域
Northwestern Pacific Volcanic Regions / Eastern Kamchatka Volcanic Arc
標高
1617m
座標
54.489, 159.974
最終噴火
200年
テクトニクス環境
Subduction zone / Continental crust (> 25 km)
火山地形
Caldera
主要岩石
Andesite / Basaltic Andesite
地質学的概要

The Uzon and Geysernaya calderas, containing Kamchatka's largest geothermal area, form a 7 x 18 km depression that originated during multiple mid-Pleistocene eruptions. Widespread ignimbrite deposits associated with caldera formation have a volume of 20-25 km3 (exclusive of airfall deposits) and cover an area of 1,700 km2. Post-caldera activity was largely Pleistocene in age and consisted of the extrusion of small silicic lava domes and flows and maar formation in the Geysernaya caldera. The Lake Dal'ny maar in the NE part of the 9 x 12 km western Uzon caldera is early Holocene in age, and several Holocene phreatic eruptions have been documented in the Geysernaya caldera. The extensive high-temperature hydrothermal system includes the many hot springs, mudpots, and geysers of the Valley of Geysers, a 4-km-long canyon on the SE margin of the depression. Hydrothermal explosions took place in the caldera in 1986 and 1989.

Wikipedia の要約

英語版の要約

Uzon is a 9 by 12 km volcanic caldera located in the eastern part of Kamchatka Peninsula, Russia. Together with the Geyzernaya caldera it hosts the largest geothermal field in the Kamchatka Peninsula. The calderas were formed in the mid-Pleistocene in several large eruptions that deposited 20–25 km3 of ignimbrite over a wide area. Lake Dalny fills a Holocene maar in the northeast of Uzon Caldera.

Wikipedia · CC BY-SA · 記事全文を読む →

噴火履歴

概要 (VEI時系列)
バーをクリックすると個別の噴火が表示されます
5750 BCE~5552 BCE · 2件 · 最大 VEI ?1585 BCE~1387 BCE · 1件 · 最大 VEI ?2~200 · 1件 · 最大 VEI ?5750 BCE4362 BCE2775 BCE1387 BCE2

詳細タイムライン

  1. 200年 (±300年)VEI ?地質学的推定
    200 ~ 進行中
    Khloridnoe Lake
  2. 紀元前 1550年VEI ?地質学的推定
    BCE 1550 ~ 進行中
    Bannoe Lake
  3. 紀元前 5700年 (±50年)VEI ?地質学的推定
    BCE 5700 ~ 進行中
    N part of caldera (Lake Dal'ny maar)
  4. 紀元前 5750年VEI ?地質学的推定
    BCE 5750 ~ 進行中

外部リンク

⚠ 参考情報です。緊急対応には使用しないでください。