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The eruption of volcanoes. If the lava flow is still underground and not exposed to air, its called Magma. Once it reaches the surface and encounters air, its called lava. Essentially, Magma and Lava are the same, there's no chemical difference other than its interaction to air.

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15y ago
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15y ago

The Earth's mantle is vastly more solid than molten due to large pressures exerted on the rocks from all sides. Molten material in the mantle can occur at hot spots and mid-ocean ridges where decompression of the rising rock allows melt, and at subduction zones where cold, wet crustal material may cause a partial melt of the surrounding mantle rock.

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13y ago

Micro seismicity, an increase or change in the chemical composition of volcanic gasses and potentially deformation or bulging of the Earth's surface may all be evidence of magma being fed into a volcanic reservoir.

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12y ago

Magma erupts through the crust at fissures

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14y ago

The best evidence of crustal movement is provided by marine fossils found on a mountaintop.

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Q: What is the evidence that the Earth's mantle contains magma?
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Related questions

Which of the following is part of the Earths lithosphere SoilMagma None of these Mantle, magma, and soil Mantle?

magma


What is the rock of earths mantle?

plate tectonic and magma


When rocks return to earths mantle to earths mantle they can eventually melt and become magma. and are the main factors that control this change.?

heat and pressure


is it true magma forms in the deeper regions of earths mantle?

yes


What is the opening on earths surface where magma from the mantle rises and flows out?

Valcano


What is a molten rock from earths mantle?

If it were molten, it would be called magma.


What layers makes up most earths mass?

The Mantle. It is the largest and thickest layer in the earth. But this answer might not be actually true. Because the earth has all these layers and the mass is added up. -By Olivia Agbo A 12 year old. Thank you for your support.


Does a volcano form when magma reaches earths surface?

That is correct. When magma travels from the mantle to the crust and reaches the surface, that is a volcano.


When solid rock in the earths mantle melts it forms a liquid rock known as?

Magma


Where does magma form before it moves toward the earths surface?

in the mantle above the slab


Is hydrogen in magma?

In small amounts, yes. Magma contains some hydrogen from water that has been subducted into the mantle.


Which layer of earth is the source of molten rock called magma that sometimes rises to earths surface?

the mantle