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What is the sial?

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What is the sial?
  • 2 answers

Devapriya K 4 years, 3 months ago

The main mineral constituents of the continental mass are silica and alumina. It is thus called Sial.

Gaurav Seth 4 years, 3 months ago

In geology, the term 'sial' refers to the composition of the upper layer of the Earth's crust, namely rocks rich in silicates and aluminium minerals. The outer or upper layer of the earth's crust is mostly found under the continent. Silica and aluminum are abundantly found in this layer therefore it is popularly known as SIAL. 

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