Which Layer Of The Earth's Crust Contains The Highest Concentration Of Silica?

Earth is approximately 4.6 billion years old and has come a long way from the huge spinning cloud of dust and gas it formed from. The planet is now comprised of three main sections: the core, mantle and crust. Silica is a mineral compound made of silicon and oxygen, SiO2, and is found on the Earth's crust in three main crystalline varieties: quartz, tridymite and cristobalite.

Layers of Crust

The Earth's crust can be further broken down into two categories — the oceanic crust and continental crust. The oceanic crust is 3 to 6 miles thick, while the continental crust is 22 to 44 miles thick. Even though the oceanic layer is thinner, it is more dense and heavier than the continental layer. However, you will find more silica on the continental crust.

Cite This Article

MLA

Revermann, Susan. "Which Layer Of The Earth's Crust Contains The Highest Concentration Of Silica?" sciencing.com, https://www.sciencing.com/layer-earths-crust-contains-highest-concentration-silica-12881/. 24 April 2017.

APA

Revermann, Susan. (2017, April 24). Which Layer Of The Earth's Crust Contains The Highest Concentration Of Silica?. sciencing.com. Retrieved from https://www.sciencing.com/layer-earths-crust-contains-highest-concentration-silica-12881/

Chicago

Revermann, Susan. Which Layer Of The Earth's Crust Contains The Highest Concentration Of Silica? last modified March 24, 2022. https://www.sciencing.com/layer-earths-crust-contains-highest-concentration-silica-12881/

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