Importance of the Earth's composition

  Importance of the Earth's composition.



  • The earth is made up of three different layers ; the crust, the mantle and the core. Overall, understanding the composition and behavior of these layers is important for understanding the Eart's geology, climate and history. The layers of the Earth are responsible for the information of our continents. Each layer has a unique chemical composition, physical state, and can impact life on Earth's surface. 


  • 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 mantle below.

  • The crust is a thin but important zone where dry, hot rock from the deep Earth reacts with the water and oxygen of the surface, making new kinds of minerals and rocks. Finally, the crust is the home of life, which exerts strong effects on rock chemistry and has its own systems of mineral recycling. Earth's crust is the most important region of the interior, providing the environment, natural resources and geological hazards that affect humanity.


  • The crust is where the magic happens. It's what we live atop of its what causes continental drift, due to earthquakes formation of new land masses.


  • The earth’s crust is very important to human beings not only because they live in it but because of the socio-economic benefits it offers them. This essay attempts to highlight the salient socio-economic significance of the earth’s crust.

  • Most industrially important metals, such as copper, Zinc and nickel, are present in the crust in abundances of 10-100 parts per million. Elements like gold, silver and platinum are present in abundances of a few parts per billion.






  • The transfer of heat and material in the mantle helps determine the landscape of Earth. Activity in the mantle drives plate tectonics, contributing to volcanoes, seafloor spreading, earthquakes and orogeny (mountain-building.)

  • The core serves as a major energy source for the planet, storing a large amount of energy acquired during core-mantle segregation and from radioactive decay of short-life isotopes, as well as producing heat through ongoing growth of the inner core.  


  • The core holds up the mantle and generates the magnetic field those products us from several kinds of radiation.















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