answersLogoWhite

0


Best Answer

It is a matter of time. Crystallization processes can occur more easily when the rock is kept at a certain temperature during a long time. Because of that, well-formed and well crystallized minerals will appear in intrusive igneous rocks (such as granitoids). On the opposite, when a rock spreads rapidly over the Earth's surface, the temperature decreases rapidly, keeping the minerals from forming. A homogeneous paste will form, without any (or few) minerals in it. It is the case for volcanics rock.

User Avatar

Wiki User

βˆ™ 12y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

βˆ™ 12y ago

Extrusive rocks are... extruded... onto the surface as the lava that we all think of. It cools fairly quickly, into rocks with fairly small crystals (might need a magnifying lens to see them). The exact chemistry of the parent magma will determine the type of rock. Oceanic volcanoes are generally basaltic (mafic or ultramafic), continental are generally granitic (felsic or intermediate). They're put down in "relatively thin" layers

Intrusive rocks cool for thousands of years beneath the surface in huge plutons or batholyths. This allows them to grow very large crystals (easily seen by the unaided eye). These intrusive rocks are almost always granitic-type rock.

My sources are:

from my science teacher who worked at the science museum

yahooanswer.com

ask.com

wikipedia the free encyclopedia

I hope this information helped. Good luck!

This answer is:
User Avatar

User Avatar

Wiki User

βˆ™ 12y ago

Extrusive rocks are... extruded... onto the surface as the lava that we all think of. It cools fairly quickly, into rocks with fairly small crystals (might need a magnifying lens to see them). The exact chemistry of the parent magma will determine the type of rock. Oceanic volcanoes are generally basaltic (mafic or ultramafic), continental are generally granitic (felsic or intermediate). They're put down in "relatively thin" layers

Intrusive rocks cool for thousands of years beneath the surface in huge plutons or batholyths. This allows them to grow very large crystals (easily seen by the unaided eye). These intrusive rocks are almost always granitic-type rock.

My sources are:

from my science teacher who worked at the science museum

yahooanswer.com

ask.com

wikipedia the free encyclopedia

I hope this information helped. Good luck!

This answer is:
User Avatar

User Avatar

Wiki User

βˆ™ 11y ago

intrusive:below ground

extrusive:at the surface

This answer is:
User Avatar

User Avatar

Wiki User

βˆ™ 11y ago

When melted rock cools on Earth's surface, it is called Extrusive

When rocks cool below Earth's surface, it is called Intrusive

This answer is:
User Avatar

User Avatar

Wiki User

βˆ™ 12y ago

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

This answer is:
User Avatar

User Avatar

Wiki User

βˆ™ 12y ago

Extrusive igneous rock is found outside the Earth's crust. Intrusive, however, is found underneath the Earths crust

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the difference between the formation of intrusive and extrusive igneous rocks?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the difference between intrusive and extrusive property of matter?

intrusive properties of matter : do not depend on the amount of matter present extrusive : depend on the amount of matter present


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 major difference between intrusive and extrusive rocks is?

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.


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.


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

intrusive


What is the difference between exrusive an intrsive igneous rock?

intrusive forms below the earths surface, and extrusive above


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 difference between intrusive and intrusive?

What is the difference between intrusive and intrusive.


What is the difference between the formation of extrusive and igneous rocks?

intrusive:below ground extrusive:at the surface


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.


Write the difference between extrusive and intrusive igneous rocks?

igneous Extrusive is cool on the outside of the crust and cools quickly before crystal forms igneous Intrusive is cool on the inside of the crust and cools slowly and allowing crystal to form


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.