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sial

 

Definitions from WordNet

Noun sial has 1 sense
  1. sial - the granite-like rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum
    --1 is a kind of
    rock, stone
    --1 is a substance of crust, Earth's crust

Definitions from the Web

Sial

Description:

Sial is the top layer of the Earth's crust that lies beneath the continents and it is composed primarily of granite and basalt. It is the part of the Earth's crust that makes up the land masses.

Sample sentences:

1. The sial layer is thicker beneath the continents compared to the oceanic crust.

2. Volcanic activity contributes to the formation of new sial.

3. The sial is rich in minerals and rocks.

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