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Q: What is the return period of the Yellowstone major eruption?
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How much overdue is the super volcano eruption in Yellowstone national park?

The Yellowstone caldera is not "overdue" for an eruption. You may have heard that the Yellowstone Caldera erupts regularly every 600,000 years and the last major eruption was 640,000 years ago. In reality the caldera does not erupt regularly and as gone as long as 800,000 years without a major eruption.


When will Yellowstone errupt again?

Yellowstone has a approx. 650,000 year-old cycle, and so the last major eruption was about 650,000 years ago. Therefore, the next eruption is long overdue and a major volcanic eruption is expected to occur in this century. It may be late 21st century (2070+), mid-21st century (2040+) or early 21st century (i.e. now or in the next two decades). Basically, Yellowstone will erupt that is a guarantee. Anyone guessing December 21, 2012?


Why would Yellowstone be potentially more dangerous and explosive than others?

Yellowstone's huge magma chamber underground is a boiling river continually building for a major eruption. Scientists estimate the huge eruption will be so great that it could destroy most of the North American continent.


How old is Yellowstone's volcano when did it become an active volcano?

The Yellowstone volcano is about 2.1 million years old. It's first major eruption dates to that time. The volcano is the latest in a series that formed from the same hot spot starting about 16 million years ago.


Where are major landforms in Yellowstone?

It is a a landform.


Is the Yellowstone volcano extinct?

Most scientists believe that Yellowstone is not truly active and that they would be able to detect if the Yellowstone volcano was going to erupt years before it erupted. But there is no way to no for sure if the Yellowstone caldera is truly active (building up for an eruption).


When is Yellowstone volcano going to explode?

The Yellowstone volcano is not just a volcano - it is a supervolcano. Geologists maintain there have been no eruptions for tens of thousands of years. It is constantly releasing pressure, although it appears the ground levels due to the movement of magma have risen several centimetres in the last century. However, despite scientists believing that a major eruption is well overdue, it currently shows no signs of an imminent major eruption.


What type of eruption was the 1980 eruption of mt st Helens?

The Mount Helen's 1980 eruption was a major volcanic eruption.


Is there a period of time in Florida when you can return a new car?

No there is not a period of time in Florida when you can return a new car. A car may be returned if it has a major mechanical defect under the Lemon law.


When was mtvesuvius's last eruption?

The last major eruption of mt.vesuvius was in 1994.


Magma oozing out of cracks in earth's surface is what kind of eruption?

An major eruption


How large was the vesuvius last eruption?

1944 it was the last major eruption from vesuvius