⏰ when
When was seafloor spreading first proposed?
Quick Answer
It was proposed in 1962 by Harry Hess.
The Full Story
Harry Hess proposed seafloor spreading in 1962 as a mechanism for moving continents. He suggested that new oceanic crust forms at mid-ocean ridges and then spreads outward, eventually being recycled at deep-sea trenches. This idea helped explain why the ocean floor is younger near ridges and older farther away. Seafloor spreading became one of the key pieces of evidence supporting plate tectonics.
Key Facts
1.Proposed in 1962
2.Associated with Harry Hess
3.Explains new crust at mid-ocean ridges
YouTube Angle
Suggested video title for this topic:
"The discovery that the ocean floor is like a giant conveyor belt"
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