Oceanic crust is composed primarily of ________.
A)granite
B)basalt
C)sandstone
D)andesite

Question

Quizplus · Accepted Answer

Oceanic crust is primarily composed of basalt, which is a dark, fine-grained igneous rock that forms from cooled lava flows. Granite is a type of rock that forms within continental crust, while sandstone is a sedimentary rock that forms from the accumulation and cementation of sand grains. Andesite is an intermediate volcanic rock that can form in both oceanic and continental crust, but it is not the primary composition of oceanic crust.

Oceanic Crust Is Composed Primarily of ________