At a Convergent Boundary.
The Indian Ocean is.
Pacific Ocean
The oldest rock in oceanic crust is that which is found the greatest distance from a mid-ocean-ridge.
Indian ocean
The oldest rocks are actually on land but in the ocean crust they would be the rocks closest to land. The mid-ocean ridge forms new rocks. They are usually located in the middle of the ocean.
Hawaii
West Indian Ocean coelacanth
The ocean is 4 billion yars old, however due to subduction, the oldest sediment found in the ocean's floor is 180 million years old.
The oldest ocean, geologically, is the Panthalassa Ocean which was around 220 million years ago in the Triassic era. It encompassed the whole Earth except the land mass Pangea. See related link for more information.
The oldest rocks on the ocean floor would be those at the colliding edge of the plate boundary.Answer 2: The oldest of all oceanic rocks are on the Asian side of the pacific plate.
Because the oldest parts reach the continental crust and then the ocean floor sinks beneath the continental crust, into the mantle.
The oldest rock on the ocean floor can be found in the central parts of the ocean basins, particularly in regions known as abyssal plains. These rocks are generally around 200 million years old or older.