The oldest ocean floor is less than 200 million years old.

Name: The oldest ocean floor is less than 200 million years old.
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The process of plate tectonics constantly recycles the Earth's crust, including the ocean floor, through subduction at tectonic boundaries. This means the oldest oceanic crust is much younger than the Earth itself, typically less than 200 million years old, in contrast to parts of the continental crust that can be over 4 billion years old.

The Oldest Ocean Floor Is Less Than 200 Million Years