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Fascinating Geological History

Started by zorkan, September 27, 2024, 01:03:09 PM

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zorkan

Forget alien invasion and climate change, the biggest threat we could face are from volcanic eruptions.

1500 years ago.
https://www.science.org/content/article/why-536-was-worst-year-be-alive

74,000 years ago.
https://geographical.co.uk/science-environment/explainer-the-toba-supervolcano-and-the-biggest-eruption-in-human-history

We can do something about climate and pandemics, but volcanoes never.



zorkan

Last year.

https://www.bbc.co.uk/news/articles/cged3jd8llyo

Can't do anything about landslides of this magnitude, either.

billy rubin

Quote from: zorkan on September 27, 2024, 01:03:09 PMWe can do something about climate and pandemics, but volcanoes never.


im not sure we can do anything about climate change. i believe its baked in. it will take a major disaster before anything happens.

but with volcanoes, you can move away from the initial sources of danger. i lived on top of the san andreas fault in western america for 17 years, and the earthquakes were things you eventually took mostly for granted. with some major exceptions.

but the climactic impacts of major eruptions look to be similar to meterorite impacts, with cooling and light reduction.

with asteroids, we get big ones periodically, and theres debate about what can be done about them.


set the function, not the mechanism.

Icarus

If Yellowstone ever blows, it's adios Muchacha.

zorkan

Quote from: billy rubin on September 27, 2024, 09:45:10 PMwith asteroids, we get big ones periodically, and theres debate about what can be done about them.

If Tunguska was an asteroid or comet hit we couldn't have done anything, but now we could send up a rocket with a warhead to divert it.
Well, couldn't we?

I'm impressed by continental drift.
Had that not happened then humans would have found it easier to kill each other.

If something like Yellowstone blows the skies will darken, sunlight will be cut off, photosynthesis will cease, humans will be reduced to cannibalism.
Mass panic and total mayhem.
If humans have not terraformed Mars by then the whole race could become extinct.




billy rubin



set the function, not the mechanism.

The Magic Pudding..

Quote from: zorkan on September 28, 2024, 12:17:09 PM
Quote from: billy rubin on September 27, 2024, 09:45:10 PMwith asteroids, we get big ones periodically, and theres debate about what can be done about them.

If Tunguska was an asteroid or comet hit we couldn't have done anything, but now we could send up a rocket with a warhead to divert it.
Well, couldn't we?

No I don't think so, Bruce Willis has dementia now, we're doomed.
If you suffer from cosmic vertigo, don't look.

zorkan

If not Willis, surely Trump will save the world.
https://www.astronomy.com/science/nuclear-bombs-really-could-deflect-asteroids-lab-tests-suggest/

On the subject of impact craters Mars has the largest yet discovered.
"The largest crater on Mars (and, arguably the largest so far discovered in the solar system) is the Hellas basin measuring 1600 x 2000 km, roughly twice the size of Alaska. "
Earth's are small by comparison.
https://www.astronomy.com/science/these-5-impact-craters-highlight-earths-wild-history/

Maybe life on Mars was obliterated by an asteroid.

Tank

If religions were TV channels atheism is turning the TV off.
"Religion is a culture of faith; science is a culture of doubt." ― Richard P. Feynman
'It is said that your life flashes before your eyes just before you die. That is true, it's called Life.' - Terry Pratchett
Remember, your inability to grasp science is not a valid argument against it.

zorkan

In the UK there are no active volcanoes but here is a list of extinct ones.

https://en.wikipedia.org/wiki/List_of_volcanoes_in_the_United_Kingdom

I have visited quite a few and the nearest is Barrow Hill.
In the unlikely event it erupts again there is a hospital only a few hundred yards away.



Tank

If religions were TV channels atheism is turning the TV off.
"Religion is a culture of faith; science is a culture of doubt." ― Richard P. Feynman
'It is said that your life flashes before your eyes just before you die. That is true, it's called Life.' - Terry Pratchett
Remember, your inability to grasp science is not a valid argument against it.

billy rubin

i would think so. but you never can tell.


set the function, not the mechanism.

zorkan

Very silly building a hospital (it's called Russells Hall) so close to a volcano.
But it's a "A very British volcano."
https://depositsmag.com/2024/05/11/barrow-hill-an-ancient-very-british-volcano/

It's like building a city under Vesuvius.
Seems like the ground around is fertile.
https://www.reddit.com/r/explainlikeimfive/comments/14wu2e8/eli5_how_could_neapolitans_build_a_city_under_the/?rdt=43725