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Intrusive: An intrusive igneous rock is formed from magma underground

Extrusive: An extrusive igneous rock is formed from lava outside of the volcano.

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Chanel Huels

Lvl 13
1y ago
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Margarette Ratke

Lvl 13
2y ago

Intrusive igneous rocks are cooled inside the earth, and extrusive are made outside.

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Rahul Ledner

Lvl 10
2y ago

Intrusive igneous rocks cool beneath the crustal surface. Extrusive cool above the surface - pillow lavas cool below the sea but above the crust.

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Wiki User

11y ago

Extrusive- out of valcanoes Intrusive- In valcanoes

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Q: What is the different between extrusive and intrusive rocks?
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Which one has large grains between intrusive and extrusive igneous rocks?

intrusive


What is the difference between an intrusive and an extrusive igneous rocks?

"intrusive" means forced into something, "extrusive" means forced out onto the surface. The igneous magma reaching the surface is therefore extrusive , producing extrusive igneous rocks, and all the rest of the magma is intrusive, producing intrusive igneous rocks.


What are the main two types of igneous rocks?

Igneous rocks are classified as either extrusive or intrusive. Extrusive rocks form from lava at or above the ground, and intrusive rocks form from magma below the ground. Granite is intrusive, pumice is extrusive.


How are intrusive rock different from with extrusive rocks?

Intrusive Rocks Intrusive rocks are characterized by large crystal that forms deep underground. Extrusive Rocks They are characterized by fine-grained textures because their rapid cooling at or near the surface.


What igneous rocks are both intrusive and extrusive?

Porphyritic igneous rocks can display both intrusive and extrusive characteristics.


Igneous rocks are described as intrusive or extrusive based on?

Igneous rocks are described as intrusive or extrusive based on formation. Intrusive rocks forms underneath the earth surface, while extrusive rocks forms on the surface of earth.


Does lava produce Extrusive or Intrusive rocks?

extrusive


How does the rate of cooling influence crystal size of igneous rocks and how does that help you to distinguish between intrusive and extrusive igneous rocks?

The longer that magma is able to cool, the larger the crystals will be. Intrusive rocks will have larger crystals than extrusive rocks. For example granite (intrusive) has larger grains than rhyolite (extrusive).


What is the major difference between intrusive rocks and extrusive igneous rocks?

Extrusive means that the lava has come out and cooled on the surface. Intrusive means that the lava has cooled in the Earth i.e. underground.


Is feldspar extrusive or intrusive?

It is actually a mineral that appears in both extrusive and intrusive igneous rocks.


Contrast the ways in which extrusive and intrusive rocks are formed?

Intrusive rocks form within the crust of the Earth while extrusive rocks form on the surface.


Are intrusive rocks volcanic?

No. Volcanic rocks are extrusive. Intrusive rocks are sometimes called plutonic.