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Columbia University Lamont-Doherty Earth Observatory: Interactive - Heezen-Tharp World Ocean Floor Map
August 01, 2026
NEW YORK, Aug. 1 -- Columbia University Lamont-Doherty Earth Observatory issued the following news:

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Interactive: The Heezen-Tharp World Ocean Floor Map

Explore Marie Tharp's groundbreaking 1977 World Ocean Floor map and discover how it transformed our understanding of the Earth.

By Jeremy Hinsdale

Though nearly three-quarters of Earth's surface lies beneath the oceans, the seafloor remained largely unexamined until . . .

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