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サリガン島

Sarigan

成層火山 · United States · 494m

The 3-km-wide Sarigan volcano is seen here from the E during a 2003 NOAA expedition to the Marianas Islands.The cone has a 750-m-wide summit crater that forms the flat area to the right and it contains a small cone. More recent eruptions produced two lava domes from vents on and near the S crater rim, forming the island's high point at the left part of the summit. Holocene lava flows from the dome complex formed the peninsula to the far left.
The 3-km-wide Sarigan volcano is seen here from the E during a 2003 NOAA expedition to the Marianas Islands.The cone has a 750-m-wide summit crater that forms the flat area to the right and it contains a small cone. More recent eruptions produced two lava domes from vents on and near the S crater rim, forming the island's high point at the left part of the summit. Holocene lava flows from the dome complex formed the peninsula to the far left. · 写真: Image courtesy of NOAA, 2003 (http://oceanexplorer.noaa.gov/explorations/03fire/). · Wikimedia Commons
タイプ
成層火山
国
United States
地域
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
標高
494m
座標
16.699, 145.780
最終噴火
不明
テクトニクス環境
Subduction zone / Crustal thickness unknown
火山地形
Composite
主要岩石
Andesite / Basaltic Andesite
地質学的概要

Sarigan volcano forms an irregular 3-km-long island consisting of a low truncated cone with a 750-m-wide summit crater that contains a small ash cone. The most recent eruptions produced two lava domes from vents above and near the south crater rim. Lava flows from each dome reached the coast and extended out to sea. The northern flow overtopped the crater rim on the N and NW sides. The sparse vegetation on the flows indicated to Meijer and Reagan (1981) that they are of Holocene age.

Wikipedia の要約

要約が短いです。詳細は記事全文をご覧ください。

サリガン島 は太平洋西部にある島。マリアナ諸島中部にあり、ググアン島の南、アナタハン島の北に位置する。

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