Question

what is meant by sima and dial
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Answer 1

Answer:

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

Answer 2

Hey friend,

Here is your answer.

Sima - Sima is the earth’s crusts lower layer and contains rocks with an abundance of magnesium silicate minerals.

Sial - Sial refers to the earth’s crusts upper layer, it is made up of rocks abundant in silicate and aluminium based minerals