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it came from the depths of the earth. due to extreme heat, rocks dissolve and they turn into magma.
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Magma is formed when pre-existing rock melts. This happens either by convection of the rock up through the mantle or by melting rock at a subduction zone. This may be a bit clearer. Magma is molten rock that is found beneath the surface of the Earth, and may also exist on other planets. Melting of solid rock to form magma is controlled by three physical parameters: temperature, pressure, and composition. You can find more information here:http://en.wikipedia.org/wiki/Magma#Melti...
What else can I help you with?
How can magma be generated from solid rock?
magma can be generated from solid rock by three things:1. decress in PRESSURE2. increase in TEMPATURE3. addition of VOLATILES
Is magma in the asthenosphere?
Yes, magma can be found in the asthenosphere. The asthenosphere is a partially molten layer beneath the lithosphere where magma can be generated due to the high temperatures and pressures. This molten material can rise to the surface through volcanic activity.
If metamorphism occurs due to heat generated by magma it is called metamorphism?
It is called contact metamorphism.
Mafic magma is generated at divergent boundaries because of?
Mafic magma is generated at divergent boundaries because of decompression melting caused by the upwelling of hot mantle material due to the pulling apart of tectonic plates. As the plates move away from each other, the decrease in pressure enables the mantle material to melt and form mafic magma.
What must happen first before magma rise to the surface?
Before magma can rise to the surface, it must first be generated through melting of the Earth's mantle or crust. This melting can be caused by an increase in temperature, a decrease in pressure, or the addition of volatiles. Once magma is generated, it can rise towards the surface through fractures and conduits in the Earth's crust.
How is magma generated along subduction zones?
Magma is generated along subduction zones when oceanic plates are forced beneath continental plates. The intense heat and pressure cause the oceanic plate to melt, creating magma that rises to the surface and forms volcanoes.
What is a contact to metamorphism?
A process that alters rocks as a result of heat generated from magma
How can magma be generated from solid rock?
magma can be generated from solid rock by three things:1. decress in PRESSURE2. increase in TEMPATURE3. addition of VOLATILES
If metamorphism occurs due to heat generated by magma it is called what?
It is called contact metamorphism.
Is magma in the asthenosphere?
Yes, magma can be found in the asthenosphere. The asthenosphere is a partially molten layer beneath the lithosphere where magma can be generated due to the high temperatures and pressures. This molten material can rise to the surface through volcanic activity.
Why are there small earthquakes before an eruption?
The earthquakes are generated by magma forcing its way though and fracturing rock.
If metamorphism occurs due to heat generated by magma it is called metamorphism?
It is called contact metamorphism.
Mafic magma is generated at divergent boundaries because of?
Mafic magma is generated at divergent boundaries because of decompression melting caused by the upwelling of hot mantle material due to the pulling apart of tectonic plates. As the plates move away from each other, the decrease in pressure enables the mantle material to melt and form mafic magma.
What must happen first before magma rise to the surface?
Before magma can rise to the surface, it must first be generated through melting of the Earth's mantle or crust. This melting can be caused by an increase in temperature, a decrease in pressure, or the addition of volatiles. Once magma is generated, it can rise towards the surface through fractures and conduits in the Earth's crust.
Where does magma come from?
Magma is generated deep within the Earth's mantle through the melting of rocks due to high temperatures and pressure. This molten rock then rises towards the Earth's surface, where it can erupt as lava through volcanic activity.
Match the feature or term in column 1 to the characteristics in column 2. A. Pangaea Super ocean B. Panthalassa Supercontinent C. Himalayas Caused by continents colliding D. Magma Generated in subduct?
A. Pangaea: Supercontinent B. Panthalassa: Super ocean C. Himalayas: Caused by continents colliding D. Magma: Generated in subduction zones
Do tsunamis have magma?
No, tsunamis are not caused by magma. Tsunamis are typically generated by underwater earthquakes, volcanic eruptions, or landslides that displace large amounts of water. Magma, which is molten rock beneath the Earth's surface, can trigger volcanic eruptions that may lead to tsunamis.
