* Mid-Atlantic Ridge: The youngest rocks are found at the Mid-Atlantic Ridge, the underwater mountain range where new seafloor is created. These rocks are constantly forming through volcanic activity and are geologically considered very young, often only a few million years old.
* Moving Away from the Ridge: As you move away from the Mid-Atlantic Ridge, the rocks become progressively older. This is because the seafloor spreads outwards from the ridge, carrying the older rocks further away.
* Oldest Rocks: The oldest rocks on the Atlantic seafloor are found near the edges of the continents, and can be hundreds of millions of years old. For example, the oldest parts of the Atlantic seafloor near North America are around 180 million years old.
Key Point: The age of Atlantic seafloor rocks is a testament to the process of plate tectonics. The continuous movement of tectonic plates creates new seafloor at mid-ocean ridges and pushes older seafloor away.
