Social Sciences, asked by piyushmistry, 4 months ago

what is meant by sima and si
al​

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Answered by chotukhan89855
0

Answer:

In geology, sima (/ˈsaɪmə/) is an antiquated blended term for the lower layer of 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 Earth's crust (continental crust).

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