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Sagot :
The following geological materials, are listed in order of most promise, beginning at the earth's surface.
1. Granite and basalt.
2. Increasing amounts of olivine and pyroxene.
3. Minerals that are only stable at extreme pressures; Fe-Mg silica and oxides.
4. Molten iron with nickel and some other elements.
5. Crystalline iron and iron-nickel alloy.
What is the crust?
The crust is the topmost solid shell of the planetary body, brown dwarf, or natural satellite. It is normally recognized from the earth's mantle by its chemical composition; nevertheless, in the case of icy satellites, it may be differentiated by its phase.
Earthly mantle:
A mantle is a layer within a planet that is bordered below by a nucleus and above by a crust. Mantles are composed of rock or ice and are the thickest and most substantial layer of a planetary body.
What is Earth's inner core?
Earth's inner core is the planet's deepest geologic layer. It is a solid ball with a radius of around 1,220 km, which is around 20% of Humankind's radius or 70% of the Moon's diameter.
To know more about earth's surface visit:
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