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  1. Ultra-Plinian eruption ... In Wikipedia. Add links. This page was last edited on 28 November 2022, at 22:29. Files are available under licenses specified on their ...

  2. Long Valley Caldera is a depression in eastern California that is adjacent to Mammoth Mountain. The valley is one of the Earth's largest calderas, measuring about 20 mi (32 km) long (east-west), 11 mi (18 km) wide (north-south), and up to 3,000 ft (910 m) deep. Long Valley was formed 760,000 years ago when a very large eruption released hot ash ...

  3. On March 27, 1980, a series of volcanic explosions and pyroclastic flows began at Mount St. Helens in Skamania County, Washington, United States. A series of phreatic blasts occurred from the summit and escalated until a major explosive eruption took place on May 18, 1980, at 8:32 am. The eruption, which had a volcanic explosivity index of 5 ...

  4. What links here; Related changes; Upload file; Special pages; Permanent link; Page information

  5. Ash cloud. A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot, molten rock, ash, and gases to escape from below the surface. Volcanic activity involving the extrusion of rock tends to form mountains or features like mountains over a period of time. Volcanoes are generally found where tectonic plates are pulled ...

  6. Gunung berapi. (Dialihkan dari Gunung Berapi) Gunung berapi Mahameru atau Semeru di belakang. Latar depan adalah Kaldera Tengger termasuk Bromo, Jawa Timur, Indonesia. Gunung berapi atau gunung api secara umum adalah istilah yang dapat didefinisikan sebagai suatu sistem saluran fluida panas (batuan dalam wujud cair atau lava) yang memanjang ...

  7. Eregli bob ( talk) 12:45, 24 February 2010 (UTC) [ reply] Pliny the Younger wrote the description of the 79AD eruption which as an example of objective impersonal observation still serves the scientific community as the way to observe and report. Scrope - the artist would have almost certainly read that description and probably seen other ...