Igneous rocks formed at mid-ocean ridges are primarily
A) mafic.
B) volatile-rich.
C) glassy.
D) felsic.

Name: Igneous rocks formed at mid-ocean ridges are primarily A) mafic. B) volatile-rich. C) glassy. D) felsic.
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Quizplus · Accepted Answer

Igneous rocks formed at mid-ocean ridges are primarily mafic, which means they are rich in iron and magnesium and have relatively low silica content. This is because the magma that forms at mid-ocean ridges comes from the mantle, which is composed of mafic minerals.

Igneous Rocks Formed at Mid-Ocean Ridges Are Primarily