Google Doodle celebrates life of American geologist Marie Tharp

On November 21 1998, the Library of Congress named her one of the greatest cartographers of the 20th century.

Marie Tharp was born on July 30, 1920, in Ypsilanti, Michigan.

Tharp's father worked for the US Department of Agriculture and gave her an early introduction to mapmaking, reminds the doodle.

She attended the University of Michigan for her master’s degree in petroleum geology.

In 1948, she moved to New York City.

To became the first woman to work at the Lamont Geological Observatory.

In 1957, Tharp and Heezen co-published the first map of the ocean floor in the North Atlantic.

National Geographic published the first world map of the entire ocean floor penned by Tharp and Heezen

Titled “The World Ocean Floor.”