Composition of igneous rock is determined by___________?
Correct answer: A. Composition of molten magma
- A. Composition of molten magma
- B. Depth of molten magma
- C. Both A and B
- D. Composition can not be determined.
Explanation
The mineral composition of an igneous rock primarily reflects the chemical composition of the molten magma from which it crystallises. Depth mainly influences cooling rate and texture, rather than determining the magma's composition.
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