How many super volcanoes are in the world??

Question

i would really like to know how many super volcanoes there are in the world,and if theres any good/interesting websites that would be great.

thanks

:)

Answer 1

According to Mason et al. (2004), there are a minimum of 47 "super eruptions" known. There are a number of other eruptions that aren't well enough known do say for sure so that 47 represents a lower limit.

Answer 2

I would guess that there are about 10.  There's Long Valley and Yellowstone in US.  

http://en.wikipedia.org/wiki/Supervolcan...

This one is interesting.

Note:  One volcano can erupt more than once.

Second Note:  A super volcano is formed from silicic magma and since sea floors are mafic, I doubt if there are any on the sea floor.

Answer 3

46

Answer 4

If you figure the ocean floor into this question the answer is unknown because the sea floor is unknown. But a guess can be made that a lot more volcanos exist on the sea floor than on land. I would guess there are 10 volcanos on the seabed for each one on land so there might 100 super ones when a complete count is made.