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  1. - Top - End - #31
    Troll in the Playground
     
    Griffon

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by Imbalance View Post
    Does it help to clarify that death by crushing doesn't necessarily mean eyes popping, bones ground to dust, and flattened into a pancake?
    It depends on the lava, pāhoehoe is less viscous.

    Or this:

    https://en.wikipedia.org/wiki/Mount_Nyiragongo#Geology

    The lava emitted in eruptions at Nyiragongo is often unusually fluid. Nyiragongo's lavas are made of melilite nephelinite, an alkali-rich type of volcanic rock whose unusual chemical composition may be a factor in the unusual fluidity of the lavas there. Whereas most lava flows move rather slowly and rarely pose a danger to human life, Nyiragongo's lava flows may race downhill at up to 100 km/h (60 mph). This is because of the extremely low silica content (the lava is mafic). Hawaiian volcanic eruptions are also characterized by lavas with low silica content, but the Hawaiian volcanoes are broad, shallow-sloped shield volcanoes in contrast to the steep-sided cone of Nyiragongo, and the silica content is high enough to slow most Hawaiian flows to walking pace.
    Some people seem to be thinking exclusively about the most viscous, barely moving lava, but not all lava is like that.
    Last edited by halfeye; 2019-05-21 at 08:51 AM.
    The end of what Son? The story? There is no end. There's just the point where the storytellers stop talking.

  2. - Top - End - #32
    Ettin in the Playground
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    Default Re: would lava crush a fireproof person?

    Thick lava like that won't move out of the way as you try to breathe, so your death would be less 'crushing' and more 'suffocating', similar to someone trapped in a grain bin.

  3. - Top - End - #33
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    Griffon

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by Rogar Demonblud View Post
    Thick lava like that won't move out of the way as you try to breathe, so your death would be less 'crushing' and more 'suffocating', similar to someone trapped in a grain bin.
    Where did you get "thick" from out of "flows at 60 mph"?
    The end of what Son? The story? There is no end. There's just the point where the storytellers stop talking.

  4. - Top - End - #34
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    Goblin

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    Default Re: would lava crush a fireproof person?

    Lava is around one fifth as viscous as molasses, and twice as dense. Since the great molasses flood moved at 35mph, I would say those numbers check out. It's still one to three times as thick as a milkshake, no matter how fast it can flow.

    Another thing to think about is the pressure differential, if you're floating to the surface faster than 1 meter/minute the bends could be be a serious issue. Survive the crushing force and the otherworldly heat, die to fizzy blood.
    "The error is to be human"

  5. - Top - End - #35
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    Griffon

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by Spojaz View Post
    Lava is around one fifth as viscous as molasses, and twice as dense. Since the great molasses flood moved at 35mph, I would say those numbers check out. It's still one to three times as thick as a milkshake, no matter how fast it can flow
    It varies. Not all lava is the same.

    nother thing to think about is the pressure differential, if you're floating to the surface faster than 1 meter/minute the bends could be be a serious issue. Survive the crushing force and the otherworldly heat, die to fizzy blood.
    Make your mind up, too thick to move, or the bends from moving too fast, I suggest you can't have both in the same lava.
    The end of what Son? The story? There is no end. There's just the point where the storytellers stop talking.

  6. - Top - End - #36
    Ettin in the Playground
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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by halfeye View Post
    Where did you get "thick" from out of "flows at 60 mph"?
    Quote Originally Posted by halfeye View Post
    Some people seem to be thinking exclusively about the most viscous, barely moving lava
    Sorry, I should've quoted the part I was responding to.

  7. - Top - End - #37
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    Knaight's Avatar

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by halfeye View Post
    Where did you get "thick" from out of "flows at 60 mph"?
    You can get high flow rates in high viscosity liquids (see: the molasses flood). On top of that when the standard of comparison is water the viscosity doesn't need to be that high before it starts impeding those in it significantly further.
    I would really like to see a game made by Obryn, Kurald Galain, and Knaight from these forums.

    I'm not joking one bit. I would buy the hell out of that.
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  8. - Top - End - #38
    Ettin in the Playground
     
    Bohandas's Avatar

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    Default Re: would lava crush a fireproof person?

    If it was dense enough to easily crush you wouldn't that same high density make you too bouyant to get to a depth where you'd be crushed
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  9. - Top - End - #39
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    Flumph

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by Rogar Demonblud View Post
    Thick lava like that won't move out of the way as you try to breathe, so your death would be less 'crushing' and more 'suffocating', similar to someone trapped in a grain bin.
    Well that is also true of a fair number of constrictor snake kills. They just prevent the expansion associated with breathing and move in tighter when their victim breathes out at all. . . and those are usually considered a "crushing" type death by most people even if one can/should dispute it on technicality. Then again the whole placing rocks on someone's chest until they do as you want or die is also generally classified as a "crushing" death but would really be about preventing the expansion of the lungs and thus a "suffocation" in some way....

    so I think calling it a "crushing" death is pretty valid even if the super high density just means you can not draw air into your lungs and asphyxiate.

  10. - Top - End - #40
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    BlackDragon

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by Bohandas View Post
    If it was dense enough to easily crush you wouldn't that same high density make you too bouyant to get to a depth where you'd be crushed
    It's also too viscous for you to easily move through, so if the lava was poured on top of you you'd get crushed long before you could float up to the surface.

  11. - Top - End - #41
    Ettin in the Playground
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    Default Re: would lava crush a fireproof person?

    Yup. Grain silos, again.

  12. - Top - End - #42
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    Griffon

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by factotum View Post
    It's also too viscous for you to easily move through, so if the lava was poured on top of you you'd get crushed long before you could float up to the surface.
    The pressure in a liquid is omnidirectional, and if the top is exposed to air, depends on depth. We've agreed that the pressure gets up to trouble levels at about 100ft deep, that much poured on you without you being moved sideways is unlikely.

    Quote Originally Posted by Rogar Demonblud View Post
    Yup. Grain silos, again.
    Grain is a collection of solids, and probably lighter than a person due to the gaps between grains and the husks.
    The end of what Son? The story? There is no end. There's just the point where the storytellers stop talking.

  13. - Top - End - #43
    Ettin in the Playground
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    Default Re: would lava crush a fireproof person?

    But the viscosity means that even though it's "solid", you can't make any headway against whatever the bin is filled with. Soybeans are worst, IME.

  14. - Top - End - #44
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    Griffon

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by Rogar Demonblud View Post
    But the viscosity means that even though it's "solid", you can't make any headway against whatever the bin is filled with. Soybeans are worst, IME.
    You have experience of drowning in Soya? Are you dead?
    The end of what Son? The story? There is no end. There's just the point where the storytellers stop talking.

  15. - Top - End - #45
    Ettin in the Playground
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    Default Re: would lava crush a fireproof person?

    Yes and no, thanks to the safety line and someone paying attention. Never neglect your safety precautions.

    Did kill any interest I had in helping on the family farm, though.

  16. - Top - End - #46
    Ettin in the Playground
     
    Bohandas's Avatar

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by factotum View Post
    It's also too viscous for you to easily move through, so if the lava was poured on top of you you'd get crushed long before you could float up to the surface.
    Pouring is a different matter. You could crush a person with ordinary water if you poured enough of it from high enough
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  17. - Top - End - #47
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    BlackDragon

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by Bohandas View Post
    Pouring is a different matter. You could crush a person with ordinary water if you poured enough of it from high enough
    I would hope it would be obvious that I'm not talking about pouring the stuff from such a height that it kills just because of the speed it hits.

  18. - Top - End - #48
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    Knaight's Avatar

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by Rogar Demonblud View Post
    But the viscosity means that even though it's "solid", you can't make any headway against whatever the bin is filled with. Soybeans are worst, IME.
    The low density is also a problem there. In water you're about neutrally buoyant, which makes swimming doable. If you were to fall in a vat of oil though, you're way below neutrally buoyant and drowning because you can't swim up is a vastly bigger risk.
    I would really like to see a game made by Obryn, Kurald Galain, and Knaight from these forums.

    I'm not joking one bit. I would buy the hell out of that.
    -- ChubbyRain

    Current Design Project: Legacy, a game of masters and apprentices for two players and a GM.

  19. - Top - End - #49
    Ettin in the Playground
     
    Bohandas's Avatar

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    Default Re: would lava crush a fireproof person?

    Quote Originally Posted by factotum View Post
    I would hope it would be obvious that I'm not talking about pouring the stuff from such a height that it kills just because of the speed it hits.
    Well if it's slowly pouring in and super-thick to float up in they could probably climb up it
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