Volcanic caldera
Caldera Volcanoes. View a satellite map of the Yellowstone Caldera. Caldera volcanoes are the Extreme Volcanoes. These are the most powerful and catastrophic types of volcanoes in a category by themselves because of the unique way in which they form. This type of volcano is shaped more like an inverse volcano. An enormous magma chamber bulges up beneath the ground from the extremely high pressures of the trapped gases within. Non-explosive eruptions of lava and less-violent explosive eruptions have occurred in and near the Yellowstone caldera since the last supereruption. The most recent lava flow occurred about 70,000 years ago, while a violent eruption excavated the West Thumb of Lake Yellowstone around 150,000 years ago. The next biggest supereruption formed the Yellowstone Caldera (640,000 years ago) and produced the Lava Creek Tuff. The Henry's Fork Caldera (1.2 million years ago) produced the smaller Mesa Falls Tuff but is the only caldera from the Snake River Plain-Yellowstone (SRP-Y) hotspot that is plainly visible today. Areas such as these are known as volcanic hotspots. Occasionally, molten rock from a hotspot will erupt. Three enormous eruptions occurred at the Yellowstone hotspot 2.1 million, 1.3 million, and 640,000 years ago. Two of these released so much material that the area is often referred to as a supervolcano. A supervolcano is a volcano that at one point in time erupted more than 1,000 cubic kilometers of deposits. That is enough material to fill up Lake Erie twice; Lake Erie is one of the Great Lakes, and it has a volume of 480 cubic kilometers. This is what we call the Hartford Ash.. The last time the Yellowstone volcano had a super eruption, 640,000 years ago, it covered eastern South Dakota in 12 inches of volcanic ash. Thes white chalky substance in Dr. Jordan's hand is ash from that eruption; found 65 feet below the ground in Hartford. That's all tied to the heart of Yellowstone, which is the underlying volcano.. On this cold winter day, the heat from these geysers meeting the cold air sends stacks of steam into the air. What you can't see, but might feel, are the earthquakes which happen here almost daily. The Yellowstone Caldera is the volcanic caldera and supervolcano located in Yellowstone National Park in the United States, sometimes referred to as the Yellowstone Supervolcano. The caldera and most of the park are located in the northwest corner of Wyoming. The next biggest supereruption formed the Yellowstone Caldera (640,000 years ago) and produced the Lava Creek Tuff. The Henry's Fork Caldera (1.2 million years ago) produced the smaller Mesa Falls Tuff but is the only caldera from the Snake River Plain-Yellowstone (SRP-Y) hotspot that is plainly visible today. At Yellowstone, we see the caldera or what we call a supervolcano. The volcanic profile of Yellowstone in its past is one of a massive eruption that dwarfs anything we understand in current knowledge. Use the link below to the Wikipedia post on the supervolcano to learn more. Yes, out of the five super volcanoes in the world yellowstone is the deadliest. Yellowstone is the largest and most destructive active supervolcano (technically dormant). If i … t were to erupt the shake would trigger a chain event causing all sorts of natural disasters across te world. Since Yellowstone’s last caldera-forming eruption 640,000 years ago, about 30 eruptions of rhyolitic lava flows have nearly filled the Yellowstone Caldera. Other flows of rhyolite and basalt (a more fluid variety of lava) also have been extruded outside the caldera. Lava Flows and Associated Hazards at Yellowstone. The most likely type of volcanic eruption at Yellowstone would produce lava flows of either rhyolite or basalt. Diagram of the Yellowstone Caldera. The last full-scale eruption of the Yellowstone Supervolcano, the Lava Creek eruption which happened nearly 640,000 years ago, ejected approximately 240 cubic miles (1,000 km 3) of rock, dust and volcanic ash into the sky. The next biggest supereruption formed the Yellowstone Caldera (640,000 years ago) and produced the Lava Creek Tuff. The Henry's Fork Caldera (1.2 million years ago) produced the smaller Mesa Falls Tuff but is the only caldera from the Snake River Plain-Yellowstone (SRP-Y) hotspot that is plainly visible today.
http://www.extremescience.com/calderas.htm https://en.wikipedia.org/wiki/Yellowstone_Caldera http://earthsky.org/earth/what-do-you-know-about-the-yellowstone-supervolcano http://www.ksfy.com/home/headlines/Will-the-Yellowstone-Volcano-Erupt-290287661.html https://en.wikipedia.org/wiki/Yellowstone_Caldera http://www.answers.com/Q/What_type_of_volcano_is_Yellowstone http://volcanoes.usgs.gov/volcanoes/yellowstone/yellowstone_hazard_44.html https://en.wikipedia.org/wiki/Yellowstone_Caldera
what kind of volcano is yellowstone