How old are the oldest rocks on the ocean floor?
A)approximately 20 million years old
B)approximately 600 million years old
C)approximately 200 million years old
D)approximately 4.0 billion years old

Question

Quizplus · Accepted Answer

The oldest rocks on the ocean floor are approximately 200 million years old. This is significantly younger than the oldest continental rocks, which can be over 4 billion years old, due to the continuous recycling of oceanic crust through the process of plate tectonics and subduction.

How Old Are the Oldest Rocks on the Ocean Floor