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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.

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11y ago
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6mo ago

The major difference is their formation location: intrusive rocks are formed below the Earth's surface from the slow cooling of magma, resulting in coarse-grained textures, while extrusive rocks are formed on the Earth's surface from rapid cooling of lava, resulting in fine-grained textures. Intrusive rocks have larger mineral grains due to their slower cooling process, whereas extrusive rocks have smaller mineral grains due to their faster cooling process.

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

Faster cooling results in smaller crystal sizes in igneous rocks, while slower cooling leads to larger crystals. This difference in crystal size is used to distinguish between intrusive (cooled slowly underground) and extrusive (cooled quickly at the surface) igneous rocks. Intrusive rocks have larger crystals due to the slower cooling process, while extrusive rocks have smaller crystals due to rapid cooling.


What is igneous rock that forms below earths surface extrusive or intrusive?

Igneous rock that forms below the Earth's surface is intrusive.


What type of rock can be extrusive or intrusive?

Igneous rocks can be either extrusive or intrusive. Extrusive igneous rocks form from lava cooling quickly on or near the Earth's surface, resulting in small crystals. Intrusive igneous rocks form from magma cooling slowly beneath the Earth's surface, resulting in larger crystals.


What is the difference between exrusive an intrsive igneous rock?

Extrusive igneous rocks are formed from lava that cools quickly on the Earth's surface, resulting in fine-grained textures. Intrusive igneous rocks are formed from magma that cools slowly beneath the Earth's surface, resulting in coarse-grained textures.


Is peridot an intrusive or extrusive igneous rock?

Peridot is an extrusive igneous rock, meaning it was formed from lava that cooled and solidified at the Earth's surface.

Related questions

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 is the difference in crystal growth between intrusive and extrusive igneous rock?

The crystal growth of intrusive igneous is substantially more so than extrusive igneous. Magma cools quicker on the earth's surface, extrusive igneous formed, as opposed to below the crust, intrusive. Therefore the longer it takes to cool the magma, the more the crystal growth.


Which one has large grains between intrusive and extrusive igneous rocks?

intrusive


What is the difference between the way intrusive and extrusive igneous is formed?

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


What is the different between extrusive and intrusive rocks?

Intrusive: An intrusive igneous rock is formed from magma undergroundExtrusive: An extrusive igneous rock is formed from lava outside of the volcano.


Is schist an intrusive or extrusive rock?

Neither, Igneous rock is either intrusive or extrusive. Thats what intrusive and extrusive is... A igneous rock.


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

instrusive is inside the valcano and exstrusive comes onto earth's crust


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.


Is marble an extrusive or an intrusive rock?

Neither. The terms intrusive and extrusive apply to igneous rocks; marble is metamorphic.


Is a metamorphic rock intrusive or extrusive?

It is neither. Intrusive and extrusive are terms used to describe igneous rock.


Is extrusive a rock?

Igneous rocks can be categorized as either extrusive or intrusive.


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

instrusive is inside the valcano and exstrusive comes onto earth's crust