Which rock type makes up approximately 90% of Earthʹs crust?
A)Igneous
B)Sedimentary
C)Metamorphic

Name: Which rock type makes up approximately 90% of Earthʹs crust? A)Igneous B)Sedimentary C)Metamorphic
Brand: Quizplus
Rating: 4.9 (37 reviews)

Question

Quizplus · Accepted Answer

Igneous rocks make up approximately 90% of Earth's crust, primarily due to the fact that the oceanic crust is largely composed of basalt, which is an igneous rock type. Sedimentary and metamorphic rocks are important components of the crust as well, but not as abundant as igneous rocks.

Which Rock Type Makes Up Approximately 90% of Earthʹs Crust