Subduction explains the fact that the oldest oceanic crust is close to 200 million years old, compared to the oldest continental rocks that are ________.
A) 4.4 million years old
B) 140 million years old
C) 1.4 billion years old
D) 4.4 billion years old
E) 14.4 billion years old

Question

Quizplus · Accepted Answer

The oldest continental rocks are about 4.4 billion years old, much older than the oceanic crust, because continental crust is not typically subducted and recycled like oceanic crust.

Subduction Explains the Fact That the Oldest Oceanic Crust Is