Why is it important to identify the two types of crust?
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Explanation:
The thin oceanic crust is composed of primarily of basalt, and the thicker continental crust is composed primarily of granite. The low density of the thick continental crust allows it to "float" in high relief on the much higher density mantlebelow.
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Why is it important to identify the two types of crust?
Explanation:
- Oceanic crust is skinny and younger very small fraction of the earth-approximately 0.1 percentage- however its existence cycle serves to split the contents of the top mantle right into a heavy residue and lighter set of basaltic rocks.
- Continental crust is thick an old-on common approximately 50km thick and approximately 2 billion years old-and it covers approximately forty percentage of the planet.
- Crust is a skinny however essential sector in which dry, warm rock from the deep earth reacts with water and oxygen of the surface, making new types of minerals and rocks.
- It's additionally in which plate-tectonic pastime mixes and scrambles those new rocks and injects them with chemically lively fluids.
- Finally, the crust is the house of life, which exerts sturdy outcomes on rock chemistry and has its personal structures of mineral recycling
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