Marie Tharp2
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Lamont’s Marie Tharp: She Drew the Maps That Shook the World
On the 100th anniversary of her birth, her grit and brilliance are as legendary as her work.
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Marie Tharp’s Adventures in Mapping the Seafloor, In Her Own Words
The pioneering mapmaker explains how she and colleagues discovered underwater mountain ranges 40,000 miles long, and helped to prove that the continents move.
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Join Us in Celebrating #MarieTharp100
July 30 marks 100 years since the birth of Marie Tharp, a pioneering geologist who created some of the first maps of the ocean floor. We’re celebrating her achievements and legacy with blog posts, giveaways, and more.
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Walter Pitman and the Smoking Gun of Plate Tectonics
“We had this magic key, this magic magnetic profile,” Pitman said. “We were able to date it and eventually use it not only as a tool that proved continental drift but a tool by which we could actually reconstruct the pattern of drift, that is the relative position of the continents, and the actual timing…
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The Floor of the Ocean Comes into Better Focus
The bottom of the ocean just keeps getting better. Or at least more interesting to look at.
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Remembered: Marie Tharp, Pioneering Mapmaker of the Ocean Floor
Marie Tharp, a pathbreaking oceanographic cartographer at the Lamont-Doherty Earth Observatory, co-creator of the first global map of the ocean floor and co-discoverer of the central rift valley that runs through the Mid-Atlantic Ridge died Wednesday August 23 in Nyack Hospital. She was 86. A pioneer of modern oceanography, Tharp was the first to map…
AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
