Because of a decrease in pressure.
Melts are most likely produced by the adiabatic rise of mantle material at divergent plate boundaries, such as mid-ocean ridges. As mantle material rises due to the reduction in pressure, it undergoes decompression melting, leading to the formation of magma.
Mafic magma has extremely high ferromagnesian content, produced by decompression melting. As the plates move apart, mantle rises to fill the void. As it melts, it forms mafic magma. Where plates are meeting, the compression of crust forms magma with higher silica content, thus forming felsic and intermediate magmas.
This is called a divergent boundary. Here, two tectonic plates are moving away from each other, causing a rift in the crust. This allows magma to come up through the crack and create new crust. These boundaries are creative, as opposed to convergent boundaries which are destructive.
it melts
When rock melts at calderas, it forms magma. This magma is then forced towards the Earth's crust as lava through volcanic eruptions.
Because of a decrease in pressure.
Magma rises and melts at divergent plate boundaries in the ocean due to the decompression melting that occurs as tectonic plates move apart. As the plates separate, pressure on the mantle decreases, causing the mantle to melt and create magma that rises to the surface, forming new oceanic crust.
Melts are most likely produced by the adiabatic rise of mantle material at divergent plate boundaries, such as mid-ocean ridges. As mantle material rises due to the reduction in pressure, it undergoes decompression melting, leading to the formation of magma.
as the plates separate , hot rock from the upper mantle is drawn upwards and it partially melts
Mafic magma has extremely high ferromagnesian content, produced by decompression melting. As the plates move apart, mantle rises to fill the void. As it melts, it forms mafic magma. Where plates are meeting, the compression of crust forms magma with higher silica content, thus forming felsic and intermediate magmas.
Yes, minerals can crystalize when magma melts.
because when it melts it turns in to magma
When a rock melts, it turns into magma, so when the magma cools, it can make a new igneous rock.
it melts.
no because the hott high temperature melts what touches it just like rocks you put arock in it it melts and turns to magma
There are three main types of plate boundaries: divergent boundaries (plates move apart), convergent boundaries (plates move towards each other), and transform boundaries (plates slide past each other). Each boundary type can result in different geologic features and events such as earthquakes, volcanic eruptions, and mountain building.
magma