Are there other super volcanos besides Toba and Yellowstone ?

[Doomer]

I know how nasty some of you buttholes can get when someone asks a question so just let me say 2 things.

1. Yes, I did google and came up with nothing other than these 2.

2. If you feel likes posting useless drivel then go ahead, I'll throw it right back at ya. :headbang:

On a related note, do we even know where all the super volcanos are ?

[lotrfan55345]

There are 32 discovered in total. The majority of them are located in Japan. There are some in Alaska, California and Africa.

We may never really know how many, since it took us 50 years to find out Yellowstone was actually a caldera, I'm sure there are remote places in Asia, S. America, and Africa that havent been survayed yet.

[RavenWhitefang]

I know how nasty some of you buttholes can get when someone asks a question so just let me say 2 things.

only when the question is rather.....silly, obnoxious, rude, but not generally towards genuine questions :)



Mount Aniakchak, Alaska, United States
Aso, Kyūshū, Japan
Campi Flegrei, Campania, Italy
Kikai Caldera, Ryūkyū Islands, Japan
Long Valley Caldera, California, United States
Mount Mazama, Oregon, United States (now Crater Lake)
Lake Taupo, North Island, New Zealand
Lake Toba, Sumatra, Indonesia
Valle Grande, New Mexico, United States
Mount Warning, New South Wales, Australia
Yellowstone Caldera, Wyoming, United States

found on the Wikipedia (http://en.wikipedia.org/wiki/Super_volcano) by searching for Super Volcano.

[Doomer]

Thanks for the link.

[BMAONE23]

I think that someone should look into the possibility that Lake Victoria might be one too. It is a semicircular lake (much like you would see as a crater lake) but more importantly, it is surrounded by active volcanos to the south, East, South East, and West with huge volcanic fields to the west. There is also a curious circular geographic feature surrounding the lake that would outline a caldera upwards of 300 miles wide and 600 miles long.

[TC]

Its about 700.000 years old, and has an average depth of around 20 meters, in fact it even dried up once about 12.000 years ago. It had its origins from a large swamp area with several lakes, but due to tectonics the area was turned into a collective basin and eventually became what we see today as Victoria lake.

[TC]

Here's a link to lake origins.

http://www.esf.edu/efb/schulz/Limnology/lakeOrigin.html


It also lists caldera lake formations.

[shawnee]

Got one at Mammoth Lakes, Ca. Ever hear of Long Valley?

[TC]

Got one at Mammoth Lakes, Ca. Ever hear of Long Valley?


Yup... there's some posts dealing with it, and its listed above in Ravens post.

[Protostar]

They found one near Terra Del Fuego around the area of Drakes passage, we posted link months ago on one of these threads!
Damn, 32 SuperVolcano's. <shiver me timbers>

[Ningishiddza]

Mount Aniakchak, Alaska, United States
Aso, Kyūshū, Japan
Campi Flegrei, Campania, Italy
Kikai Caldera, Ryūkyū Islands, Japan
Long Valley Caldera, California, United States
Mount Mazama, Oregon, United States (now Crater Lake)
Lake Taupo, North Island, New Zealand
Lake Toba, Sumatra, Indonesia
Valle Grande, New Mexico, United States
Mount Warning, New South Wales, Australia
Yellowstone Caldera, Wyoming, United States
found on the Wikipedia by searching for Super Volcano.

found on the Wikipedia (http://en.wikipedia.org/wiki/Super_volcano) by searching for Super Volcano.

You can add these two supervolcanos, which wikipedia omitted through ignorance.

Awasa caldera in Ethiopia. Size: 460 square miles

Pastos Grandes caldera in Bolivia. Size: 1,000 square miles.

[charro995]

so you are saying there are 34 calderas in the world,so one could go off anytime prof mike rampino said that around every 50.000 years one of these erupts.
The last one was toba 74.000 years,so you think the scientists would be looking for which one it could be next.
Yellowstone is the one every one knows about and long valley,infact long valley is more dangerous than yellowstone.yet little is said about it.so if there are 34 out there that drops the odds of one going off in our life time quiet a bit

[shawnee]

Yeah when you look at the Yellowstone ash fallout projection maps and see what Long Valley did, whew!

I lived in Fresno from l961 thru l973 and didn't know squat about Long Valley.

[charro995]

i bet your glad you dont live there now

[shawnee]

Yeah for sure! Although the damage these things can do makes it touch and go anywhere you live in the continental US that isn't east of Mississippi river. Not to mention the ice age they'd plunge the world into.

[Ningishiddza]

so you are saying there are 34 calderas in the world,so one could go off anytime prof mike rampino said that around every 50.000 years one of these erupts.
The last one was toba 74.000 years,so you think the scientists would be looking for which one it could be next.

I think perspective is important.

These things are interesting from a historical perspective, but you want to waste money on these things? For what purpose? You're going to evacuate 500 Million people from a flow zone in 3 hours? Not. I suppose we could evacuate everyone from potentially devastating areas now. You can open your home and share it with 6 or 7 families so they can have a place to stay and someone to feed them.

Toba's especially interesting, because had the eruption occured 6 months later, the tradewinds would have been blowing to the east, and instead of dumping 3 meters of ash in the Middle East and East Africa, it would have fallen into the Pacific Ocean. There wouldn't have been a bottle-neck genetically.

If one happens, it happens, and no one is going to stop it. The money would be better spent locating geologically dead planets that have Earth-like environments and finding a way to travel to them quickly and efficiently.

[cyberstorm]

Take Mazama off of that list,Mazama was basicly the same eruption as Tambora,a stratovolcano that exploded

Raubal can be added to the list

[TC]

i bet your glad you dont live there now

Fresno is in California, Yellowstone is east some 1500 miles, and the winds predominantly blow that direction, same with the long Valley, its on the east side of the Sierra Nevada range.

Yellowstone would dump ash ( with a large eruption) eastwards for three or four states, same goes for the long Valley caldera. In a worse case scenario it would destroy the wheat and corn belt of the Midwest region, which in its own right would screw things up for just about everybody.

But historically we are some 75 to 100 thousand years from its expected cycle of eruption. So I wouldn't sell the farm right away.LOL