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What is the difference between intrusion and extrusion igneous rocks?
Wiki User
∙ 12y ago
Both are formed from the crystallization of minerals caused by the cooling of magma.
Intrusive igneous rocks cooled below the surface of the planet, however, and generally display larger crystals due to the increased amount of time spent at mineral crystallization temperatures from the insulating effect of surrounding material.
Examples: granite, gabbro, diorite, peridotite.
Extrusive rocks are formed from magma at or above the surface of the planet, and generally display smaller mineral crystals, or no crystals at all, because of the rapid cooling environment in which they form. Chemically, an intrusive and extrusive rock could be identical, the only difference being the size of the mineral crystals they contain.
Examples: obsidian, rhyolite, pumice, scoria, basalt.
Brant Lockman
Alexandrine Nienow
Both are formed from the crystallization of minerals caused by the cooling of magma.
Intrusive igneous rocks cooled below the surface of the planet, however, and generally display larger crystals due to the increased amount of time spent at mineral crystallization temperatures from the insulating effect of surrounding material.
Examples: granite, gabbro, diorite, peridotite.
Extrusive rocks are formed from magma at or above the surface of the planet, and generally display smaller mineral crystals, or no crystals at all, because of the rapid cooling environment in which they form. Chemically, an intrusive and extrusive rock could be identical, the only difference being the size of the mineral crystals they contain.
Examples: obsidian, rhyolite, pumice, scoria, basalt.
Lupe Hahn
Both are formed from the crystallization of minerals caused by the cooling of magma.
Intrusive igneous rocks cooled below the surface of the planet, however, and generally display larger crystals due to the increased amount of time spent at mineral crystallization temperatures from the insulating effect of surrounding material.
Extrusive rocks are formed from magma at or above the surface of the planet, and generally display smaller mineral crystals, or no crystals at all, because of the rapid cooling environment in which they form. Chemically, an intrusive and extrusive rock could be identical, the only difference being the size of the mineral crystals they contain.
Wiki User
∙ 7y agoBoth are formed from the crystallization of minerals caused by the cooling of magma.
Intrusive igneous rocks cooled below the surface of the planet, however, and generally display larger crystals due to the increased amount of time spent at mineral crystallization temperatures from the insulating effect of surrounding material.
Examples: granite, gabbro, diorite, peridotite.
Extrusive rocks are formed from magma at or above the surface of the planet, and generally display smaller mineral crystals, or no crystals at all, because of the rapid cooling environment in which they form. Chemically, an intrusive and extrusive rock could be identical, the only difference being the size of the mineral crystals they contain.
Examples: obsidian, rhyolite, pumice, scoria, basalt.
Anonymous
Wiki User
∙ 13y agoBoth are formed from the crystallization of minerals caused by the cooling of magma.
Intrusive igneous rocks cooled below the surface of the planet, however, and generally display larger crystals due to the increased amount of time spent at mineral crystallization temperatures from the insulating effect of surrounding material.
Extrusive rocks are formed from magma at or above the surface of the planet, and generally display smaller mineral crystals, or no crystals at all, because of the rapid cooling environment in which they form. Chemically, an intrusive and extrusive rock could be identical, the only difference being the size of the mineral crystals they contain.
Wiki User
∙ 11y agoIntrusive rocks cool below the earth's surface and take much longer to crystalize, thus are usually coarse grained. Intrusive rocks often form through magma plumes, which rise through the mantle and cool in the earth's crust. Granite is a good example of an intrusive igneous rock.
Extrusive rocks cool above the earth's surface and crystallize very quickly, as a result are finer grained. Extrusive rocks are released from the earth in the form of volcanic eruptions, which occur both on the continents and on the ocean floor. Extrusive rocks like basalt form the ocean floor, exiting the asthenosphere from divergent plate boundaries.
Wiki User
∙ 12y agoone is within the earth, one is on the earths surface
Anonymous
Quickly above Earth
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What is an igneous intrusion?
Stock Batholith
What is the most massive form of igneous intrusion is?
Batholith
An igneous intrusion that cuts across rock layers is called a?
A discordant intrusion is known as a dyke. A larger intrusion may also be a pluton or batholith, which both also cut across rock strata. A sill is an intrusion which is concordant, and goes between the strata. This does not necessarily mean that it is horizontal.
When there is an igneous intrusion and a fault line which one is younger?
That depends! If the fault line cross cuts the igneous intrusion causing the intrusion to be displaced on either side of the fault and forming a broken mass of rock within the intrusion known as a fault breccia then the fault is younger than the intrusions, as the intrusion must have already existed for the fault to cause it's displacement. If on the other hand the igneous intrusion cross cuts the fault and is un-deformed then it is probable that it is younger than the fault.
Crustal rock is uplifted by the intrusion of an igneous mass?
a dome mountain is formed
How does the age of an igneous extrusion compare with the rock into which it was extruded?
An igneous intrusion is younger than the rock into which it intruded.
How does the age of a rock layer compare with an igneous intrusion that is through it or an igneous rock extrusion above it?
If it is above it, the rock layer came after the intrusion. if the intrusion went through the rock layer is older because they layer had to be there in order for the intrusion to go through.
When magma rises what geological formation can result?
If it has broken through the Earth's crust then it would be a igneous extrusion and a volcano can form. If it hasn't complete broke through the crust it would be a igneous intrusion. Depending if the intrusion was concordant or discordant with the bedding planes it would be either a sill or a dyke.
What is a large igneous intrusion called?
Batholith is the name for a huge igneous intrusion.
What is an igneous intrusion between two sedimentary rock layers?
A laccolith is an igneous formation between two sedimentary layers
What type of area granite and basalt rocks found in?
Principally and respectively they are the main continental and oceanic crust rocks of the Earth. They will also appear on the surface as igneous rocks by intrusion or extrusion (volcanism).
What is a body of extrusive igneous rock called?
The answer to this ? is extrusion
What is an igneous intrusion?
Stock Batholith
What do you call the layering in igneous rocks?
"layering" As in "layered" igneous intrusion.
What tells geologists how extrusion forms?
I am learning about this in my Science class, and when a geologist looks at an extrusion, they know it's an extrusion because it is Igneous rock, and an extrusion helps tell the reletive ages of the layers around it.
What type of rock is a laccolith?
A laccolith is an igneous intrusion that has been forced between two sedimentary rock strata creating a lens.
What kind of a rock is an intrusion made of?
igneous rock
