Question

what is the uppermost part of the lithosphere, which is rich in silica and aluminium, known as ? ​

Answer 1

Answer:

The uppermost part of the lithosphere is composed of rocks rich in silica and aluminium called sial. Below the sial layer the rocks rich in silica and magnesium and are called sima, which is generally found below of the ocean basins.

Answer 2

Answer:

Sial

Explanation:

sial the uppermost layer of crust

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