Why are older parts of the ocean floor no older than about 200 million years?

Question

Chemistry

Reina Villarreal

12 September, 09:37

Why are older parts of the ocean floor no older than about 200 million years?

+3

Answers (2)

Know the Answer?

Ethan Sandoval · Answer 1

The older parts of the ocean floor are no older than about 200 million years old is because of subduction. Subduction is "the sideways movement of the edge of a plate of the earths crust into the mantle beneath another plate."

This basically means that the ocean floor is renewed every 200 million years.

Leland Fowler · Answer 2

They are older because they were there before the new pats of the floor and only the new parts of the floor get washed away and the old parts stay.