⏰ when
When was the first global map of the ocean floor completed?
Quick Answer
A major global seafloor map was completed in 1977 by Marie Tharp and Bruce Heezen’s work and later global synthesis.
The Full Story
Ocean-floor mapping advanced dramatically in the mid-20th century, and Marie Tharp’s interpretations were central to understanding the shape of the seafloor. Her work, along with Bruce Heezen’s data and later global syntheses in the 1970s, revealed mid-ocean ridges, trenches, and fracture zones. These maps transformed seafloor geology and strongly supported plate tectonics. The ocean floor was no longer an invisible unknown; it became a key to Earth’s dynamic structure.
Key Facts
1.Major global synthesis completed in the 1970s
2.Associated with Marie Tharp and Bruce Heezen
3.Revealed ridges, trenches, and fracture zones
YouTube Angle
Suggested video title for this topic:
"The map that revealed the hidden mountains of the deep ocean"
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