As the lithosphere slides over the softer rock of the asthenosphere, the resulting friction causes that softer rock to melt. It then becomes magma.
Most magma forms from the partial melting of Earth's mantle rocks. As these rocks are subjected to high temperatures and pressures in the mantle, certain minerals melt at different temperatures, leading to the formation of magma.
During subduction, one tectonic plate moves beneath another into the mantle. This process can cause melting of the descending plate, leading to the formation of magma. This magma can then rise to the surface through volcanic activity, contributing to the formation of new igneous rocks and completing the rock cycle.
When large quantities of magma push through the Earth's mantle and into the crust, it can create a volcanic formation known as a volcanic hotspot or a volcanic arc. This process often leads to the formation of volcanoes, volcanic mountains, and lava flows on the Earth's surface.
When water is added to rock in the mantle, a process called hydration occurs where the water reacts with the minerals in the rock to form new minerals. This can lead to changes in the rock's composition, structure, and physical properties. Additionally, the presence of water can lower the melting point of the rock, potentially leading to the formation of magma through partial melting.
Tectonic plates are frequently moved around by the layers of magma beneath them. Their movements are very unpredictable, but we do know that they cause volcanoes, earthquakes, and tsunamis. The cause is really the currents of the magma that move the plates around.the mantle comes up and fills the gap and make another plate or combines the two plates
One factor that does not play a role in magma formation is the Earth's rotation. Magma formation is primarily influenced by factors such as temperature, pressure, composition of the rock, and the presence of volatiles (such as water and gases) in the mantle.
Igneous rock.
No because weather has no affect on the earth mantle and the mantle is the source of magma for the volcano.
As rising superheated mantle rock nears the surface due to tectonic forces, the compression pressure from surrounding rock decreases, causes it to melt, forming magma. It's called decompression melting. The high pressures that keep the superhot mantle rock from melting in the first place are called lithostatic pressures.
the upper mantle
the role of asthenosphere in magma generetion
No, the Earth's mantle is to deep and warm for this. Magmas are generated in the upper mantle by a process called partial melting and the melt collects in the crust (in magma chambers at varying depth).
Most magma forms from the partial melting of Earth's mantle rocks. As these rocks are subjected to high temperatures and pressures in the mantle, certain minerals melt at different temperatures, leading to the formation of magma.
Magma that is rich in silica typically forms when mantle material interacts with continental crust or other silica-rich components during the process of partial melting. This interaction can lead to the generation of andesitic or rhyolitic magmas, which have higher silica content compared to basaltic magmas from the mantle. Additionally, subduction zones are common settings for this process, where oceanic crust is forced down into the mantle, contributing to the formation of silica-rich magma through melting and assimilation of crustal materials.
During subduction, one tectonic plate moves beneath another into the mantle. This process can cause melting of the descending plate, leading to the formation of magma. This magma can then rise to the surface through volcanic activity, contributing to the formation of new igneous rocks and completing the rock cycle.
When large quantities of magma push through the Earth's mantle and into the crust, it can create a volcanic formation known as a volcanic hotspot or a volcanic arc. This process often leads to the formation of volcanoes, volcanic mountains, and lava flows on the Earth's surface.
When water is added to rock in the mantle, a process called hydration occurs where the water reacts with the minerals in the rock to form new minerals. This can lead to changes in the rock's composition, structure, and physical properties. Additionally, the presence of water can lower the melting point of the rock, potentially leading to the formation of magma through partial melting.