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Differentiate between the following
4. Extrusion and intrusion
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Answers
Answer:
An intrusion is any body of intrusive igneous rock, formed from magma that cools and solidifies within the crust of the planet.
In contrast, an extrusion consists of extrusive rock, formed above the surface of the crust.
Intrusion stay inside of the rock layers and never make it to the surface, which makes it just magma, while extrusions are only on the surface and are lava.
Lava that hardens on the surface is called an extrusion. The rock layers below an extrusion are always older than the extrusion. ... There, the magma cools and hardens into a mass of igneous rock called an intrusion. An intrusion is always younger than the rock layers around and beneath it.
1) Extrusion is a technique where molten polymer is forced through a die and is used to produce components of a fixed cross-sectional area such as tubes and rods.
eg:-toothpaste is squeezed out of a tube, icing is pushed out of an icing bag and "Playdo" shapes are made.
2)
the action or process of forcing a body of igneous rock between or through existing formations, without reaching the surface
Main difference-Intrusion stay inside of the rock layers and never make it to the surface, which makes it just magma, while extrusions are only on the surface and are lava.