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Tafahi

成層火山 · Tonga · 546m

The small 1.2 x 2.8 km wide island of Tafahi is a conical stratovolcano that rises more than 500 m out of the ocean about 7 km N of Niuatoputapu. No historical eruptions have been reported, but its youthful morphology suggests recent activity.
The small 1.2 x 2.8 km wide island of Tafahi is a conical stratovolcano that rises more than 500 m out of the ocean about 7 km N of Niuatoputapu. No historical eruptions have been reported, but its youthful morphology suggests recent activity. · 写真: Photo by Paul Taylor (published in Taylor and Ewart, 1997). · Wikimedia Commons
タイプ
成層火山
Tonga
地域
Tonga-Kermadec Volcanic Regions / Tofua Volcanic Arc
標高
546m
座標
-15.854, -173.747
最終噴火
不明
テクトニクス環境
Subduction zone / Oceanic crust (< 15 km)
火山地形
Composite
主要岩石
Andesite / Basaltic Andesite
地質学的概要

The small 1.2 x 2.8 km island of Tafahi is a conical stratovolcano about 7 km N of the island of Niuatoputapu in the northern Tonga Islands. It is the northernmost subaerial volcano of the Tofua volcanic arc. The basaltic andesite volcano is elongated N-S, and the summit is located on the SW side of the island. The W side of the volcano is the most dissected, and a narrow fringing reef partially encircles the island. No eruptions have been reported, but its youthful morphology, which resembles that of the larger Kao volcano in the central Tonga Islands, suggests recent activity.

Wikipedia の要約

英語版の要約

Tafahi is a small island in the north of the Tonga archipelago, in fact closer to Savaiʻi (Samoa) than to the main islands of Tonga. It is only 9 km (5.6 mi) north-northeast away from Niuatoputapu, and fishermen commute in small outboard motorboats almost daily between the two. The island has a population of 14.

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