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Mafic magma can evolve into intermediate magma through several processes, including fractional crystallization, where early-formed minerals (rich in magnesium and iron) crystallize and remove these components from the liquid, increasing the silica content. Another process is magma mixing, where mafic magma interacts with more silicic (felsic) magmas, resulting in a hybrid composition. Additionally, assimilation of surrounding rocks can introduce more silica and modify the magma's composition, contributing to the evolution towards intermediate magma.

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The three crystals found in all three rocks at different times could have formed under varying geological conditions. Each rock may have gone through different processes (such as cooling, heating, and pressure changes) over time, leading to the growth of the crystals at different stages. This could explain why the same type of crystals are present in all three rocks but are found at different depths within each rock.


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Related Questions

What is a sentence with intermediate?

The word intermediate means in between, or in the middle. For example, "my children will attend the intermediate school next year".


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