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Guardian.UK: Geologists identify trigger for apocalyptic ‘super eruptions’.

“The run-up to a super-eruption is different. Magma builds up so slowly that the rocky walls of the chamber heat up and expand, allowing the chamber to grow to a huge size. This relieves pressure inside the magma chamber. But as the chamber grows, more buoyant magma is forced upwards, and can eventually fracture the surface rock, causing a massive eruption.” Waiting for some wit to come up with ‘triggering the Yellowstone caldera’ as a means of fixing climate change.

01/06/14 • 03:38 PM • Environmental • History • Nature • Science • No Comments

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