Goat Rocks volcano
stratovolcano 2494 m / 8,182 ft
Washington, USA (mainland exept Alaska), 46.5°N / -121.45°W
Current status: (probably) extinct (0 out of 5) | Reports
Goat Rocks volcano books
Washington, USA (mainland exept Alaska), 46.5°N / -121.45°W
Current status: (probably) extinct (0 out of 5) | Reports
Goat Rocks volcano books
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Typical eruption style: Explosive
Goat Rocks volcano eruptions: 3 million - ca. 500,000 years ago
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Goat Rocks volcano eruptions: 3 million - ca. 500,000 years ago
| Time | Mag. / Depth | Distance | Location |
| Sun, 9 Dec | |||
| Sun, 9 Dec 11:15 UTC | M 1.7 / 9 km | 30 km | - 30km SSW of Packwood, Washington |
| Wed, 5 Dec | |||
| Wed, 5 Dec 13:48 UTC | M 1.3 / 2.1 km | 14 km | - 19km NW of Packwood, Washington |
| Fri, 23 Nov | |||
| Fri, 23 Nov 20:19 UTC | M 1.1 / 0.4 km | 1 km | - 27km NNW of Packwood, Washington |
| Fri, 23 Nov 19:42 UTC | M 1.5 / 0.4 km | 2 km | - 26km NNW of Packwood, Washington |
| Mon, 19 Nov | |||
| Mon, 19 Nov 18:31 UTC | M 0.2 / 4.4 km | 16 km | - 24km ESE of Eatonville, Washington |
Background:
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.
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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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