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G3: Explorers: Marie Tharp

Resources for G3 Explorer Project

Biographical Information

“There is no doubt that an understanding of the ocean floor is one key to unlocking the mystery of the evolution of our planet.”

“I was always very interested in maps and the way they represented the world.”

“Science is not just about discovering knowledge, but about learning how to ask the right questions.”

Tharp’s East-West profiles across the North Atlantic. The Floors of the Ocean, 1959

One of her important innovations was creating sketches depicting what the seafloor would look like. These views made it easier to visualize the ocean floor’s topography and create a physiographic map.

Tharp's Physiographic map of the Ocean Bottom

The map depicts the North Atlantic Ocean and surrounding basin, including most of eastern North America, with landmasses in yellow and submerged regions in blue.

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