Question

Sial layer is composed of rocks rich in ---and ----.

Answer 1

Heya mate.....

This layer is made of rocks rich in magnesium silicate minerals. Typically when the sima comes to the surface it is basalt, so sometimes this layer is called the 'basalt layer' of the crust. ... Comparable is the name 'sial' which is the name for the upper layer of the Earth's continental crust.

Answer 2

The Sial layer is composed of rocks rich in Silicates and Aluminium.

Explanation:

• Sial is the compositions of the layers made up of silicates and aluminum layers.

• This is mostly present on the uppermost layer of the earth surface ranging up to 25 km.

• This layer is absent in the oceanic basins and therefore they are considered as continental crust.

• This layer also contains a high level of feldspar and high amount of basaltic rocks.

• This layer holds a diversity of rock types. In the continental plates sial range found between 5km to 70km deep.

Learn more about Sial layer

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