EDU Possible enormous supervolcano discovered in Alaska v. 2020 keeps on giving

Meat Popsicle

You're stewed, butt wad!
OT Supporter
Apr 26, 2002
134,509
The Middle

At least 4 volcanoes are actually connected to a single caldera.

But taken together, the data point convincingly to the existence of a caldera about 20 kilometers across. The volcanoes’ peaks are arranged in a ring and bathymetric seafloor mapping, mostly from the 1950s, shows arc-shaped ridges and a 130-meter-deep depression in the center of the ring. Both are clues that the volcanoes are connected by one big caldera, a massive crater that forms when a very large magma chamber in a volcano explodes and empties.

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smell my finger

strive nonetheless towards beauty and truth,
Aug 8, 2001
93,003
N NJ
did you read it or just spam-post the link? it said that if it was a super volcano, it's already done and over.
 

smell my finger

strive nonetheless towards beauty and truth,
Aug 8, 2001
93,003
N NJ
What? They are all active volcanoes that appear to be coming from the same magma chamber...
new study suggests a wide crater, created when the supervolcano exploded, connects at least four existing volcanoes. It’s so big that if the supervolcano erupted during the last few thousand years, it could have disrupted civilizations around the world, says John Power, a geophysicist at the U.S. Geological Survey’s Alaska Volcano Observatory. Power presents the findings at the annual meeting of the American Geophysical Union on December 7.
 

Buzz Killington

π–•π–Šπ–ˆπ–ˆπ–†π–›π–Ž
new study suggests a wide crater, created when the supervolcano exploded, connects at least four existing volcanoes. It’s so big that if the supervolcano erupted during the last few thousand years, it could have disrupted civilizations around the world, says John Power, a geophysicist at the U.S. Geological Survey’s Alaska Volcano Observatory. Power presents the findings at the annual meeting of the American Geophysical Union on December 7.
it's still there you screeching autistic fuck
 

Buzz Killington

π–•π–Šπ–ˆπ–ˆπ–†π–›π–Ž
the remnants of it are
a wide crater, created when the supervolcano exploded, connects at least four existing volcanoes

the data point convincingly to the existence of a caldera about 20 kilometers across

Both are clues that the volcanoes are connected by one big caldera, a massive crater that forms when a very large magma chamber in a volcano explodes and empties.

One hallmark of many calderas is still-active volcanoes on their rims that tap into the same magma chamber, even long after the caldera itself formed. Mount Cleveland fits that scenario. It has β€œerupted 60 or 70 times since 2001,” says Power.

Piecing the evidence together has been challenging, thanks to the extremely remote location, a largely underwater setting and newer volcanic deposits which obscure older ones.

β€œThis potential identification helps us understand what we might expect, why Cleveland is so active, and understand the hazards.”
 

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