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Why are felsic rocks melted by mafic magmas but mafic rocks are not melted by felsic magmas?
Felsic rocks have a lower melting point than mafic rocks and felsic magma has a lower temperature. In other words, felsic magma is not hot enough to melt mafic rock while mafic magma is hot enough to melt felsic rock.
When rocks return to the earths mantle they can eventually melt and become magma what are the main factors that control this change?
The main factors that control the melting of rocks and their transformation into magma in the Earth's mantle include temperature, pressure, and the presence of fluids. As rocks descend into the mantle, increasing temperatures can cause them to reach their melting points. Additionally, higher pressures can raise the melting point of rocks, while the introduction of water and other volatiles can lower the melting point, facilitating the melting process. These factors work together to influence the formation of magma from solid rocks in the mantle.
Is a concentration of heat in the mantle that produces magma?
Yes, a concentration of heat in the mantle can produce magma through a process called mantle melting. This occurs when temperatures rise sufficiently to melt rock, often due to factors like increased pressure or the presence of water, which lowers the melting point of the rocks. The resulting magma can accumulate and eventually lead to volcanic activity when it rises to the Earth's surface.
How does the composition of magma affect the temperature at which it solidifies?
Magma consists of molten rocks and metals. The composition can vary based on presence of water, metals with different melting points, and such.
How does melting point change as the water content of rocks increases?
As the water content of rocks increases, the melting point typically decreases. This is because the presence of water lowers the melting point of minerals in the rocks by acting as a flux that promotes melting. The addition of water creates a eutectic point where the rock will begin to melt at a lower temperature.
Why are felsic rocks melted by mafic magmas but mafic rocks are not melted by felsic magmas?
Felsic rocks have a lower melting point than mafic rocks and felsic magma has a lower temperature. In other words, felsic magma is not hot enough to melt mafic rock while mafic magma is hot enough to melt felsic rock.
Which type of magma is produced at the Coolest temperature?
Basaltic magma is produced at the coolest temperatures because it has a lower silica content and therefore has a lower melting point compared to other types of magma. This type of magma typically erupts quietly and forms basaltic rock, such as the kind found at mid-ocean ridges.
Can magma met a diamond?
The melting point of diamond is sufficiently high that magma would not melt it.
When rocks return to the earths mantle they can eventually melt and become magma what are the main factors that control this change?
The main factors that control the melting of rocks and their transformation into magma in the Earth's mantle include temperature, pressure, and the presence of fluids. As rocks descend into the mantle, increasing temperatures can cause them to reach their melting points. Additionally, higher pressures can raise the melting point of rocks, while the introduction of water and other volatiles can lower the melting point, facilitating the melting process. These factors work together to influence the formation of magma from solid rocks in the mantle.
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.
Under what conditions does magma form?
Magma forms where rock is heated to a temperature above its eutectic melting point.
What affect does the presence of water have on the melting temperature of a rock?
The presence of water can lower the melting temperature of a rock by facilitating the transfer of heat and promoting the formation of liquid magma. Water can act as a flux, which helps to break chemical bonds in the rock and decrease its melting point. This process is commonly seen in the formation of magmas in subduction zones and other tectonically active regions.
Will magma melt diamond?
a diamond's melting point is so highmagma will not melt it
Is a concentration of heat in the mantle that produces magma?
Yes, a concentration of heat in the mantle can produce magma through a process called mantle melting. This occurs when temperatures rise sufficiently to melt rock, often due to factors like increased pressure or the presence of water, which lowers the melting point of the rocks. The resulting magma can accumulate and eventually lead to volcanic activity when it rises to the Earth's surface.
How deep in the earth can magma form?
Magma can form at varying depths in the Earth, typically from about 30 kilometers to over 150 kilometers beneath the surface. The exact depth at which magma forms depends on several factors, including the composition of the mantle rocks and the presence of fluids or volatiles that can lower the melting point of rocks.
What is melting point of acetamide?
The melting point is influenced by the presence of impurities in the material.
What happens when temperatures of rock rises above its melting point?
The rock melts to form magma.
