Question

what do you understand by the sial and sima​

Answer 1

Answer:

Sial refers to the earth's crusts upper layer, it is made up of rocks abundant in silicate and aluminium based minerals. ... Sima is the earth's crusts lower layer and contains rocks with an abundance of magnesium silicate minerals, the word Sima is an amalgam of the first two letters of Magnesium and Silica.

Explanation:

Answer 2

Answer:

In geology, sima is the name for the lower layer of the Earth's crust. This layer is made of rocks rich in magnesium silicate minerals. ... ... Comparable is the name 'sial' which is the name for the upper layer of the Earth's continental crust.

Explanation:

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