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What is the main mineral component of th...

What is the main mineral component of the continental mass ?

A

Oxygen and Alumina

B

Magnesium and Silica

C

Alumina and Magnesium

D

Silica and Alumina

Text Solution

Verified by Experts

The correct Answer is:
D
Silica and Alumina are the main mineral components of the continental mass. It is thus called Sial (Si-silica and Al-alumina). However, the oceanic crust mainly consists of silica and magnesium and it is therefore called Sima (si-silica and ma-magnesium).
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