Question

Why is the oldest seafloor less than 180 million years when the oldest continental crust is about 4 billion years old?

Answer 1

Answer: It is because of subduction, oceanic crust tends to get colder and denser with age as it spreads from the mid-ocean ridges!

Step-by-step explanation:

Answer 2

It is because of subduction, oceanic crust tends to get colder and denser with age as it spreads from the mid-ocean ridges.