Goat Rocks volcanstratovolcan 2494 m / 8,182 ft
Washington, USA (mainland exept Alaska), 46.5°N / -121.45°W Condition actuelle: (probablement) éteint (0 sur 5)
Style éruptif tipique: Explosive
Eruptions du volcan Goat Rocks: 3 million - ca. 500,000 years ago Derniers séismes proches:
Introduction:Volcanism began approximately 3.2 million years ago with eruption of at least 650 meters of high-silica rhyolite tuff, which is exposed on the east flank of the subsequent Goat Rocks volcano.Goat Ricks volcano itself was probably build between ca 2.5 - 0.5 million years ago. It produced large volume lava flows, most notably the 1.0 million-year-old Tieton Andesite, which reached ca. 80 kilometers eastward. It is the longest known andesite flow on Earth. --- Source: Wood and Kienle, (eds.), 1990, Volcanoes of North America - United States and Canada: Cambridge University Press., cited on CVO website. |
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