Dawson Strait Group

パプアニューギニア · 火山原

Dawson Strait Group

タイプ: 火山原
標高: 500m
最終噴火: 1350年

The Dawson Straits, seen in this NASA Landsat image, is located between eastern Fergusson Island (upper left) and northwestern Normanby Island (lower left) in the D'Entrecasteaux island group. The area contains a volcanic field with several young volcanic centers that erupted rhyolitic obsidian flows. Mount Oiau is located on the narrow peninsula (left center) forming the southernmost point on Fergusson Island. A large crater is visible on Dobu Island, southeast of Oiau. Young volcanic rocks are also found on Sanaroa Island (upper right). · 写真: NASA Landsat 7 image, 1999-2003 (courtesy of NASA Worldwind).

タイプ: 火山原
国: パプアニューギニア
地域: 南西太平洋 / Trobriand Volcanic Province
標高: 500m
座標: -9.620, 150.880
最終噴火: 1350年
テクトニクス環境: 沈み込み帯 / 大陸地殻 (> 25 km)
火山地形: 火山群
主要岩石: 流紋岩

地質学的概要

英語の原文

The Dawson Straits, located between eastern Fergusson and western Normanby Islands in the D'Entrecasteaux island group, contains a volcanic field with several centers that define a possible partly submerged caldera.

出典：Global Volcanism Program, Smithsonian Institution（抜粋） · GVP で全文を読む →