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Magma is formed from the subduction and melting of cold, dense, wet oceanic crust at some convergent plate margins. The moisture in the rock assists in the melting of the crust and the rock surrounding it. Magma is also formed at hot spots in the mantle where hot material undergoes decompression melting as it rises. Decompression melting also occurs at the mid-ocean ridges where new oceanic crust is formed from rising mantel rock.
What else can I help you with?
How do science teachers present origin of life when all existing views have pros and cons?
As with most science subjects; they explain what evidence has been found and how scientist interpret that evidence.
Scientist's Names and their inventions?
who are the 5 most earliest scientist in the world? and what are their inventions?
Do scientist always follow the scientific method?
most of the time because it depends on what the scientist is studying
Who are the most popular scientist?
albert Einstein
Who was the most famous scientist of the Hellenistic era?
The famous scientist of the Hellenistic era was Archimedes.
How do scientist believe these underwater ridges are formed?
The major ridges in the oceans are most likely formed by the slow eruption of magma from the underlying mantle through a separating rift between two tectonic plates. When the magma contacts the ocean water the magma cools and solidifies into new rock.
How do scientist think most magma is formed?
Scientists believe that most magma is formed through the melting of rock in the Earth's mantle due to temperature increase or changes in pressure. This process can occur in subduction zones, where one tectonic plate is forced beneath another, or in hot spot locations where plumes of hot mantle material rise towards the surface.
How are most volcanoes formed?
by an earthquake and magma pushs up into thee valcaneo
What rock most likely formed underground from slow cooling magma?
Igneous
What is an easy way to explain how mountains are formed?
An easy way to explain how mountains are formed is through geological activities. Most mountains are formed as a result of volcanic eruptions while others are formed through erosion and other activities.
What is the most common intrusive igneous rock formed by magma?
when magma released from deep volcanic fissures becomes trapped and cools beneath the surface of the earth, creating igneous rock formation
What is most magma?
magma
What kind of rock is likely to form where the heat from the granitic magma is conducted to the limestone country rock?
The metamorphosed limestone will most likely be a skarn or marble, both formed from contact with an intruding granitic magma.
What rock would most likely to be found on a volcanic mountain?
you would normally find igneous rock which is formed by cooled magma.
What do most scientists believe is the origin of the moons?
Scientist theorize that a planet-sized object collided with earth and the moon formed
How does a metamorphic rock form into magma?
Metamorphic rock could become magma by collisions involving an oceanic plates. During subduction,any rock carried on the plate would return to the mantle and melt,forming magma
Most igneous rocks are formed from hot liquid rock this means they?
Most igneous rocks are formed from hot liquid rock called magma cooling and solidifying. As the magma cools, mineral crystals begin to form, giving the rock its characteristic texture and composition. This process can occur both below and above the Earth's surface, resulting in different types of igneous rocks.
