Questions tagged [mantle]
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How long would it take for a large impact crater to stop being volcanic?
(For context, this is for a science fiction novel in which a chunk of an earth-like planet is expelled. I suppose the nearest real-world situation would be a large meteorite strike.)
Suppose an impact,...
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Strain rates of olivine in the upper mantle?
Is there any scientific guess/measurement of the average strain rate as a function of depth in the Earth's mantle?
Thinking about mantle convection, I'm curious if there was ever an estimation about ...
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From how deep in the mantle has any rock ever been brought to the surface? Have scientists found anything they believe originated in the outer core?
I wonder if this is even possible to know....
Do geophysicists and geologists have even a 'theoretical' idea about how deep Earth's churning of its layers goes?
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Do subducted continents rise up again through ridges?
Layman here, sorry if this is a stupid question. I have a geology friend who recently told me that plate tectonics is like how warm milk cools on top to form thin solid layers. The convection cells in ...
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If the universe (and our galaxy) has about twice as many oxygen atoms as carbon ones, why does Earth have 300 times as many oxygen atoms as carbon?
A (relatively) recent 'Sky & Telescope' magazine feature story mentioned how little carbon the Earth has, and how some scientists' models predict we should somehow have even less....
So I looked ...
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Why was quartz not a major product of the Lunar Magma Ocean?
Fractional crystallisation generally makes magma more silicic. Why was a substantial quartz layer not a product of the stratification of the Lunar mantle?
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Does this support Hapgood's Earth Crust Displacement Theory?
I'm no Geologist by any standard but I'm quite intrigued by what goes on below our feet.
I came across this article that states there's a new or (confirmed) partially melted layer in the athenosphere (...
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Simple Mathematical Equation for the Geotherm
Hi I need a simple equation (polynomial third straight) for a PerpleX simulation to represent the mantle geotherm. The geotherms I have found on the internet so far (unfortunately I don't have the ...
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What makes special a volcanic pipe to be stable until the mantle?
Comming from this question:
Can we really travel through earth's core?
I wonder what makes special a volcanic pipe to be stable since the mantle through the surface, in comparison to our try or ...
user27958
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What does fugacity mean in the context of geology?
I am reading about water in the Lunar mantle, however it mentions fugacity a lot. What does it mean in this context?
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What is the difference between a depleted mantle, and a fertile or enriched mantle?
In a paper about the interior of the Moon, it references depleted mantle sources and enriched mantle sources. Sometimes the latter is referred to as 'fertile'. What is difference between the first two?...
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Is there a seismic discontinuity between the lithosphere and asthenosphere?
I've been learning about seismic discontinuities, mainly the 5 defined ones - Conorod discontinuity, Mohorovicic discontinuity, Repetti discontinuity, Gutenberg discontinuity, and Lehmann ...
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How likely are caverns inside the mantle?
Almost everyone wrongly assumes that the Earth's mantle is liquid, but it isn't (only the outer core is). Is it possible then that there are hollow spaces within the mantle, similar to caves in the ...
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If people aim to reach the mantle, why don't they just use volcano craters?
Once in a while aspiring people aim to drill through the Earth's crust to reach the mantle, but why do they want that when the mantle is actually on or very close to the surface in volcano craters? ...
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When diamonds "migrate" from deep underground to the surface, do they maintain pressure inside when there is no more pressure outside? If so, how?
From Science News' A mineral found in a diamond’s flaws contains the source of some of Earth’s heat:
A tiny bit of rock trapped inside a diamond is now opening a brand-new window into what the planet’...
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