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How is pressure involved in melting mantle material at a mid-ocean ridge?
Wiki User
∙ 12y ago
Pressure is involved because as the plates move apart, lower mantle material is hot, flexible, and solid. This rock is solid because of the great pressure of the layers above it. However. as the rock of the lower mantle rises, the pressure drops and the material melts.
Wiki User
∙ 12y ago
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When magma forms within the mantle it is most often a result of?
Either the loss of confining pressure causing the melting point of the material to drop below the in-situ temperature or due to the presence of volatiles which enter the mantle where subduction occurs and also lower the melting point of the material.
When pressure on a piece ice is increased its melting point will be?
The melting point of ice actually DECREASES with an INCREASE in pressure.
What happens to the melting point of plagioclase feldspar when it is pushed further into the earth?
the melting point decreases as pressure increases, so the further into the earth feldspar is pushed, the higher the pressure and the lover the melting point
What happens when water is added to rock in the mantle?
It causes a lowering of the melting temperature of the material, which in turn can cause partial melting of the mantle material leading to the formation of magma.
Which two factors affect the temperature that rocks melt at?
The two main factors that affect the temperature at which rocks melt are the composition of the rock and the pressure acting on it. Different minerals have different melting points, so the composition of the rock will determine its melting temperature. Additionally, pressure can increase or decrease the melting temperature of rocks, with higher pressure generally increasing melting temperature and lower pressure decreasing it.
How are pressure and heat involved in melting rock in the mantle?
It is involved in the Mantle because heat Is used for the temepeter and pressure is for how close the mantle is
How does pressure determine whether the mantle is solid or liquid?
The melting temperature of materials is affected by their confining pressure. The higher the pressure the higher the melting temperature. As such as you move deeper into the mantle, the tempraeture will increase, but because of the overlying material so to will the confining pressure which drives up the melting temperature. When high temperature mantle material moves nearer to the surface such as near a mid-ocean-ridge the confining pressure falls faster than the materials temperature and this can cause the melting point to drop below the temperature of the material leading to melting.
What mining of melting point?
The melting point is the temperature at the solid and liquid states of the material are in equilibrium; if the temperature is even very slightly above the melting point, the material will melt, and if it's even very slightly below, the material will freeze. Technically the melting point depends on the pressure, but usually the dependence is not very strong; you have to change the pressure a lot (and by "a lot" I mean many multiples of normal atmospheric pressure) to change the melting point by enough to even notice.
Explain why the expansion of rock is important in the formation of magma.?
The melting temperature of materials is affected by the pressure they are under. So when "rock" in the Earth's mantle experiences a decrease in confining pressure, not only does it expand, it's melting temperature drops. If the melting temperature of the material drops below the background (also known as the in-situ) temperature, then melting will occur and in this case magma will form.This typically occurs in the earth where hot upwelling mantle material experiences a decrease in confining pressure (as there is less and less overlying material as it rises) which ultimately causes adiabatic or decompression melting.
Why the expansion of rock is important in the formation of magma?
The melting temperature of materials is affected by the pressure they are under. So when "rock" in the Earth's mantle experiences a decrease in confining pressure, not only does it expand, it's melting temperature drops. If the melting temperature of the material drops below the background (also known as the in-situ) temperature, then melting will occur and in this case magma will form.This typically occurs in the earth where hot upwelling mantle material experiences a decrease in confining pressure (as there is less and less overlying material as it rises) which ultimately causes adiabatic or decompression melting.
Why is the expansion of rock is important in the formation of magma?
The melting temperature of materials is affected by the pressure they are under. So when "rock" in the Earth's mantle experiences a decrease in confining pressure, not only does it expand, it's melting temperature drops. If the melting temperature of the material drops below the background (also known as the in-situ) temperature, then melting will occur and in this case magma will form.This typically occurs in the earth where hot upwelling mantle material experiences a decrease in confining pressure (as there is less and less overlying material as it rises) which ultimately causes adiabatic or decompression melting.
Why expansion of rock is important in the formation of magma?
The melting temperature of materials is affected by the pressure they are under. So when "rock" in the Earth's mantle experiences a decrease in confining pressure, not only does it expand, it's melting temperature drops. If the melting temperature of the material drops below the background (also known as the in-situ) temperature, then melting will occur and in this case magma will form.This typically occurs in the earth where hot upwelling mantle material experiences a decrease in confining pressure (as there is less and less overlying material as it rises) which ultimately causes adiabatic or decompression melting.
What does the inner core of the earths layers do when its in so much pressure?
The amount of pressure overcomes the material's disposition to melting at high temperature. It solidifies.
When a material is melting the temperature?
When a material is melting, the temperature is likely to be increasing. That or the temperature is just above the material's melting/freezing point.
Is melting of the mantle achieved by decreasing pressure at divergent plate boundaries?
Yes. Decompression melting occurs at divergent plate boundaries as pressure on the mantle material decreases due to the withdrawal of oceanic crust at spreading centers.
When magma forms within the mantle it is most often a result of?
Either the loss of confining pressure causing the melting point of the material to drop below the in-situ temperature or due to the presence of volatiles which enter the mantle where subduction occurs and also lower the melting point of the material.
What is the melting point for reamer?
A reamer is a tool, not a material. The melting point would depend on what material the reamer is made of.
