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Magma is molten rock that comes from a layer miles beneath the Eart's crust.
When underground pressures force magma upward, it "intrudes" into fissures within the solid rock, separating the layers of rock with "intrusive magma" that does not reach the surface.
When magma erupts out of a volcano, it is "extrusive" and forms either "lava" that flows onto the ground, or "ejecta" that explodes into the air (before falling to the ground as volcanic ash).
Intrusion or extrusion of magma produces "igneous" rock, which very different from rock which is produced by dissolved "sediments" accumulating at the bottom of rivers, or "metamorphic" rock which changes its shape and internal structure due to extreme pressures.
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∙ 9y ago
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Is magma extrusive or intrusive?
Intrusive please explain why it is intrusive
Does intrusive have lava or magma?
Intrusive rocks are formed when MAGMA cools under the earth's surface and forms a rock
What is intrusive?
Intrusive activity is when magma in the mantle or crust starts to cool and crystallize. Igneous rock forms from the crystallization.
What is igneous rock formed from magma below Earth's surface is called?
It is called an intrusive igneous rock.
What are large grains of intrusive rock that cools down slowly?
Intrusive Igneous rocks. Examples: obsidian, magma
Is magma extrusive or intrusive?
Intrusive please explain why it is intrusive
Does intrusive have lava or magma?
Intrusive rocks are formed when MAGMA cools under the earth's surface and forms a rock
How do intrusive and igneous rocks differ?
Intrusive rocks are formed from magma below the surface; extrusive rocks are formed from magma on the surface of Earth.
What is igneous rock formed from magma?
An igneous rock formed from magma is intrusive.
What is an igneous rock formed by magma?
intrusive
What type of magma is closer to intrusive rocks?
magma can be classified into two,magma of granitic composition(originates from lower continental crust) and magma of basaltic composition (which originates from upper mantle).Both can form intrusive rocks.
How does intrusive rock form?
intrusive rock froms when magma cools or hardens underneath the earth. :)
What is intrusive?
Intrusive activity is when magma in the mantle or crust starts to cool and crystallize. Igneous rock forms from the crystallization.
What is a igneous rock formed from magma called?
intrusive
How is intrusive rock form?
Intrusive rocks are formed by the cristalization and cooling of magma deep inside the Earth.
Rocks made by the cooling of magma are called?
Intrusive igneous rocks are formed by the cooling of magma.
What is magma called when cooled slowly?
It will convert from magma to some form of intrusive igneous rock.
