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The caldera is the enormous volcanic crater left from the last time Yellowstone experienced a giant eruption, 640,000 years ago. It covers an area about 30 by 45 miles .
To compare, Mt. St. Helens' eruption in 1980 was a level 4. Known as a super eruption for its magnitude, the event emptied out enough volcanic material to produce the 30-by-40-mile-wide caldera.
Two long-dormant “supervolcanoes” on two separate continents appear to be stirring to life. Well, maybe. In recent months, more than a thousand minor earthquakes have rattled the area around ...
A 3 km (1.9 mi) long fissure opened in the same area as the December 2023 eruption, between the Sundhnúksgígar craters and the hill of Stóra-Skógfell, about 4 km (2.5 mi) north-east of Grindavík. About two-thirds of the lava flowed west into the Svartsengi area, extending up to 4.5 km (2.8 mi) from the eruption centre.
2023 eruption of Mount Marapi; S. Sakurajima; 2023–2024 Sundhnúkur eruptions ... This page was last edited on 20 December 2023, at 19:23 (UTC).
The next pre-collapse rhyolite eruption is the Green Canyon Flow in the north of Big Bend Ridge, with a mapped volume of about 5 km 3 (1.2 cu mi), dated at 1.2989 ± 0.0009 million years. [56] Its age is indistinguishable from that of the subsequent Mesa Falls Tuff , but the Henry's Fork Caldera fracture truncates the Green Canyon Flow ...
A larger eruption occurred on 7 November. [77] On 8 November, the volcano erupted several times, one bearing an ash plume with a height reaching 10 km (6.2 mi). [78] On 9 November, it erupted again, scrambling authorities to evacuate approximately 16,000 people from nearby villages. [79] 2 Mount Marapi [80] Indonesia 2023 23 [81] 2023 eruption ...
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