While Earth is estimated to be 4.6 billion years old,the oldest oceanic crust is approximately ____ years old.
A) 2.5 billion
B) 6,000
C) 865 million
D) 1 billion
E) 280 million

Question

While Earth is estimated to be 4.6 billion years old,the oldest oceanic crust is approximately ____ years old.
A)	2.5 billion
B) 6,000
C)	865 million
D)	1 billion
E)	280 million

Quizplus · Accepted Answer

The oceanic crust is constantly being recycled through the process of plate tectonics, so the oldest oceanic crust is only about 280 million years old.

While Earth Is Estimated to Be 4