The second book in the Marvelous but True non-fiction series for children by Jan Leyssens and Joachim Sneyers!

"A good introduction to the accomplishments of Marie Tharp for young readers. The information given hits the highlights of her mapping and discovery of the Mid-Atlantic Ridge and will lead those interested in geology and cartography to search for further reading. The illustrations are bright and engaging, and complement the text well." - April Gray

In the early part of the twentieth century, the researcher Marie Tharp worked on a detailed map of the bottom of the ocean. And then she made a discovery—a chasm down the middle of the Atlantic Ocean. Could this discovery help prove the age-old theory that the continents on Earth move?

The second book in a series about scientific wonder, now focusing on oceanographic cartographer Marie Tharp! Dreaming, daring, thinking, and doing. For researchers ages 6 and up.