Answered
In Plural Nouns
How extrusion forms?
An extrusion is an igneous rock layer formed when lava flows onto Earth's surface and hardens. Extrusions are always younger than the rocks below it.
Results for: Extrusion
Answered
What is a extrusive rock?
Any ingenious rock derived from magma that is poured out or ejected at the Earth's surface. Extrusive rocks are usually distinguished from intrusive rock on the basis of their… texture and mineral composition. Lava flows and pyroclastic debris (fragmented volcanic material) are extrusive; they are commonly glassy (e.g., obsidian) or finely crystalline (e.g., basalts and felsites). (MORE)
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In Geology
What is extrusion and intrusion?
intrusion - intrusion is when magma cools down inside Earth. extrusion - extrusion is when lava cools down on Earth.
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Why do extrusive rocks have air pockets?
they have air pockets becuase they form so quickley' that air pockets get trappped inside of them' while intrusive rocks take time to form & no air pockets are able to get int…o them- learned it straight from science class ;) (MORE)
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In Geology
What does intrusive and extrusive mean?
These two terms are used to classify igneous rock. Intrusive igneous rock has solidified from magma, below the surface of the Earth. Extrusive igneous rock has solidified from… lava, at or near the surface of the Earth. Intrusive rock displays a coarse-grained rock texture, a result of the slow cooling of magma. Extrusive igneous rock will display either a fine or a glassy texture, depending on the speed of solidification of the lava. (MORE)
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In Science
Compare and contrast extrusions and intrusions?
they both are igneous rocks and they both are cooling of magma. they are diffrent because intrusion gonna be on top of another layer and extrusion is gonna be going throgh …some other layers (MORE)
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In Geology
What is extrusive?
There are two classifications of rock, intrusive and extrusive. Extrusive rock is formed when magma erupts from the earth's crust and solidified
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What are extrusive rocks?
Extrusive igneous rocks are formed by magma. The magma is crystallized after being pushed to the surface of the Earth. They usually are very fine grained. A really common …extrusive rock would be Basalt. (MORE)
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In Science
What is a disc extrusion?
Disc extrusion is a degenerative condition of the spine and is also referred to as a herniated or ruptured disc. The condition causes material to leak and from characteris…tic shapes that can compress a nerve. A disc extrusion can cause back or neck pain. (MORE)
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Is Felsic a Intrusive or Extrusive Rock?
It can be either. The term felsic describes the composition of the rock, not where it forms. The general category for intrusive felsic rock is granite while extrusive fels…ic rock is rhyolite. (MORE)