16 to 20 million years old The only part rising significantly above sea level due to a hotspot. 60 to 80 million years old Mature section with deep transform faults and older crust.
Mid Atlantic Ridge Sections Age Comparison and Evolution
This means the rocks immediately adjacent to the ridge summit are the youngest, with the age of the seafloor increasing symmetrically away from the center. Therefore, when asking how old the ridge is, the answer is tied to the opening of the Atlantic.
The ridge is as old as the ocean basin it helps to create, making it a constant feature through the age of the dinosaurs and into the current era. Over millions of years, this system evolved, with segments becoming more defined and the ridge taking on the sprawling "S" shape we see today.
Mid Atlantic Ridge Sections Age Comparison
Because of this cycle of creation and destruction, the oldest rocks on the Atlantic seafloor are found at the edges of the continents, not in the middle. Around 150 million years ago, a single ridge system began to split what would become the Atlantic.
More About How old is the mid atlantic ridge
Looking at How old is the mid atlantic ridge from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on How old is the mid atlantic ridge can make the topic easier to follow by connecting earlier points with a few simple takeaways.
