Impact on Global Geography. The Breakup of Pangaea To answer the question of when the Mid-Atlantic Ridge formed, one must first understand the demise of Pangaea.
Mid Atlantic Ridge Growth Rate History Through the Ages
The Mid-Atlantic Ridge represents one of the planet's most significant geological features, a continuous underwater mountain range that stretches like a scar along the floor of the Atlantic Ocean. The Mid-Atlantic Ridge is the physical manifestation of this divergence, a boundary where new oceanic crust is created as magma rises from the mantle and solidifies.
Evidence from the Ocean Floor Geologists have determined the age of the ridge and the seafloor it creates through the study of magnetic striping and sediment accumulation. 5 centimeters per year, a process that has been steadily widening the Atlantic Ocean for millions of years.
Mid Atlantic Ridge Growth Rate Through Geological History
By analyzing the alternating patterns of magnetic minerals locked in the basaltic rock, scientists can see a symmetrical record of Earth's magnetic reversals flanking the ridge. These patterns confirm that the crust youngest is found at the ridge axis, where the formation is actively happening, and the crust gets progressively older with distance, providing a clear timeline of when different sections formed.
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