The average composition of the continental crust most closely approximates that of ________.
A) granite
B) basalt
C) peridotite
D) iron

Question

Quizplus · Accepted Answer

The average composition of the continental crust is primarily composed of granitic rocks, such as granite, which contains a high percentage of silicon dioxide and aluminum oxide. Basalt and peridotite are more common in the oceanic crust, and iron is not a major component of either the continental or oceanic crust.

The Average Composition of the Continental Crust Most Closely Approximates