it is approximately 135-150 million years old. It's formation began during the breakup of pangaea, a landmass which consisted of all the modern continents. We can tell today for a number of reasons, one of which is because it is contantly widening while the Pacific is shrinking.
The north Atlantic ocean is as old as the other oceans
The Atlantic Ocean
the ocean sea
old
The state of Maine is on the coast of the Atlantic Ocean
The Atlantic ocean
the ocean that massachusetts borders is the atlantic ocean.
Atlantic Ocean
Atlantic Ocean borders Georgia
the southern ocean it is the Atlantic ocean
The Atlantic Ocean lies east of New York City
Atlantic Ocean is the answer.