Final answer:
Oceanic crust is composed of mafic minerals like basalt, while continental crust consists of silicate minerals such as granite. Basalt primarily contains elements like silicon and oxygen,
Step-by-step explanation:
Oceanic crust is composed of mafic minerals while continental crust is composed of silicate minerals.An example of a mineral that makes up oceanic crust is basalt, formed from mafic magma that erupts on the seafloor or cools to create gabbro.
Basalt is made primarily of silicon, oxygen, iron, aluminum, and magnesium, characteristic of volcanic rocks. By contrast, continental crust is predominantly composed of granite.
A type of volcanic silicate rock that is less dense and encompasses a wider variety of rock types including igneous, metamorphic, and sedimentary rocks.