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Udokan Plateau

火山原 · Russia · 2180m

The Udokan Plateau volcanic field extends across 3,000 km2 around 400 km ENE of the northern tip of Lake Baikal, with a small part of the field that contains Holocene features shown in this July 2019 Planet Labs satellite image monthly mosaic (N is at the top; this image is approximately 16.5 km across). The round, 950-m-diameter lava dome in the center of this image is just SW of the Aku crater. Chepe cone is in the NW corner, and between them is Dolinnyi cone.
The Udokan Plateau volcanic field extends across 3,000 km2 around 400 km ENE of the northern tip of Lake Baikal, with a small part of the field that contains Holocene features shown in this July 2019 Planet Labs satellite image monthly mosaic (N is at the top; this image is approximately 16.5 km across). The round, 950-m-diameter lava dome in the center of this image is just SW of the Aku crater. Chepe cone is in the NW corner, and between them is Dolinnyi cone. · 写真: Satellite image courtesy of Planet Labs Inc., 2019 (https://www.planet.com/). · Wikimedia Commons
タイプ
火山原
国
Russia
地域
Eastern Asia Volcanic Regions / Baikal Rift Volcanic Province
標高
2180m
座標
56.280, 117.770
最終噴火
-220年
テクトニクス環境
Rift zone / Continental crust (> 25 km)
火山地形
Cluster
主要岩石
Trachybasalt / Tephrite Basanite
地質学的概要

The Udokan Plateau volcanic field occupies a broad area about 400 km ENE of the northern tip of Lake Baikal. Quaternary volcanism here represents the latest manifestation of activity dating back to the Miocene covering an area of 3,000 km2 at the eastern margin of the Baikal Rift System. Late Pleistocene to Holocene volcanic centers are concentrated along three major lineaments, and many eruptions were localized along fissures trending NW-SE and NE-SW. Dated Holocene volcanic centers are located on a 20-km-long line at the SW side of the field, but Holocene cinder cones also occur in the NE Udokan Plateau. Seismic activity has been recorded at depths of 15-20 km beneath some of the cones. Basaltic cinder cones dominate the field, but basal trachytic ignimbrites are also overlain by lava domes and flows, and trachytic maars were formed during the final stages of activity. The latest dated eruption took place at Chepe volcano about 2,200 years ago.

Wikipedia の要約

英語版の要約

The Udokan Plateau is a volcanic field in Transbaikalia, Russia. It covers a surface area of 3,000 square kilometres (1,200 sq mi) northeast of Lake Baikal in North Asia. Volcanism in the Udokan Plateau included both basaltic lava flows and later individual volcanic cones. Volcanism commenced in the Miocene and continued on into the Holocene.

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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
7290 BCE~7054 BCE · 1件 · 最大 VEI ?6347 BCE~6112 BCE · 1件 · 最大 VEI ?6112 BCE~5876 BCE · 1件 · 最大 VEI ?2812 BCE~2577 BCE · 1件 · 最大 VEI ?456 BCE~220 BCE · 1件 · 最大 VEI ?7290 BCE5640 BCE3755 BCE2105 BCE456 BCE

詳細タイムライン

  1. 紀元前 220年 (±50年)VEI ?地質学的推定
    BCE 220 ~ 進行中
    Chepe
  2. 紀元前 2670年 (±100年)VEI ?地質学的推定
    BCE 2670 ~ 進行中
    Aku
  3. 紀元前 5990年 (±100年)VEI ?地質学的推定
    BCE 5990 ~ 進行中
    Dolinnyi
  4. 紀元前 6210年 (±100年)VEI ?地質学的推定
    BCE 6210 ~ 進行中
    Khangura
  5. 紀元前 7290年 (±100年)VEI ?地質学的推定
    BCE 7290 ~ 進行中
    Sini

外部リンク

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