What sets Supervolcanoes apart from normal volcanoes?
- They don't have a vent -They're much bigger/wider -Don't have a mountain like shape -They don't have to be on plate margins they can be on 'hotspots' -They are 'invisible', can only be identified from space-They could affect everybody on the planet
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When are they easier to spot?
After they've errupted
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What is yellowstone famous for?
It has the biggest collection of geographical features in the world
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How many visitors does it get a year?
3 million
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What does the magma from the supervolcano cause at the surface of the earth?
-geysers - mud pots/pools
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How does a hot spot create a supervolcano?
The earths crust is thinner and the hot reservoir of magma melts the crust
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How often does a supervolcano errupt?
Every 600-700 thousand years
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What warning signs are there that a super eruption may be imminent?
-It seems to be on a cycle of erupting every 600-700 thousand years (the last eruption was 640,000 years ago -bison in the area die from gas poisoning- geysers erupt more frequently- ground temps rise to boiling point- ground deforms
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Where has there been uplift in Yellowstone?
Northern part of the calderea in Yellowstone
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Wjy are earthquakes so dangerous in Yellowstone?
Because if they're 7 or higher they have the power to trigger eruptions because they can damage the magma chamber allowing magma to escape
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How big is the Yellowstone Supervolcano?
80km long, 40km wide, 8km deep (3 times larger than NYC)
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How much magma needs to be emitted for an eruption to be classed as a 'super' eruption?
1000 km cubed
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Other cards in this set
Card 2
Front
where is the next supervolcano likely to occur?
Back
Yellowstone National Park (USA)
Card 3
Front
What sets Supervolcanoes apart from normal volcanoes?
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