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Yonemaru-Sumiyoshiike

マール · Japan · 40m

The 500-m-wide Sumiyoshiike maar formed about 7,000 years ago. Sumiyoshiike and Yonemaru are two maars that formed in coastal lowland deposits N of the Aira caldera during a period of rising sea level at the beginning of the Holocene. The larger 1.2-km-wide Yonemaru maar erupted about 2 km W of Sumiyoshiike about 6,500 years ago.
The 500-m-wide Sumiyoshiike maar formed about 7,000 years ago. Sumiyoshiike and Yonemaru are two maars that formed in coastal lowland deposits N of the Aira caldera during a period of rising sea level at the beginning of the Holocene. The larger 1.2-km-wide Yonemaru maar erupted about 2 km W of Sumiyoshiike about 6,500 years ago. · 写真: Copyrighted photo by Yoshihisa Kawanabe (Japanese Quaternary Volcanoes database, RIODB, http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/index.htm and Geol Surv Japan, AIST, http://www.gsj.jp/). · Wikimedia Commons
タイプ
マール
国
Japan
地域
Western Pacific Volcanic Regions / Ryukyu Volcanic Arc
標高
40m
座標
31.771, 130.592
最終噴火
-6200年
テクトニクス環境
Subduction zone / Continental crust (> 25 km)
火山地形
Minor (Basaltic)
主要岩石
Basalt / Picro-Basalt
地質学的概要

Yonemaru and Sumiyoshiike are basaltic maars formed in coastal lowland deposits north of the Aira caldera, on the SW and SE flanks of the small Pleistocene Aojiki cone. The three features are also known as the Kamo Volcanic Field. The maar eruptions occurred during a period of rising sea level at the beginning of the Holocene. The 500-m-wide Sumiyoshiike was created about 7,000 years ago. The larger, 1.2-km-wide Yonemaru erupted about 2 km W of Sumiyoshiike about 6,500 years ago and produced pyroclastic surges that traveled 4 km from the vent.

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
6250 BCE~6245 BCE · 1件 · 最大 VEI 26205 BCE~6200 BCE · 1件 · 最大 VEI 36250 BCE6240 BCE6225 BCE6215 BCE6205 BCE

詳細タイムライン

  1. 紀元前 6200年VEI 3地質学的推定
    BCE 6200 ~ 進行中
    Yonemaru
  2. 紀元前 6250年VEI 2地質学的推定
    BCE 6250 ~ 進行中
    Sumiyoshi-ike

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。