"A fascinating account of a woman working without much recognition... to map the ocean floor and change the course of ocean science." -- San Francisco Chronicle

Soundings is the story of the enigmatic woman behind one of the greatest achievements of the 20th century. Before Marie Tharp, geologist and gifted draftsperson, the whole world, including most of the scientific community, thought the ocean floor was a vast expanse of nothingness. In 1948, at age 28, Marie walked into the geophysical lab at Columbia University and practically demanded a job. The scientists at the lab were all male. Through sheer willpower and obstinacy, Marie was given the job of interpreting the soundings (records of sonar pings measuring the ocean's depths) brought back from the ocean-going expeditions of her male colleagues. The marriage of artistry and science behind her analysis of this dry data gave birth to a major work: the first comprehensive map of the ocean floor, which laid the groundwork for proving the then-controversial theory of continental drift.

Marie's scientific knowledge, her eye for detail and her skill as an artist revealed not a vast empty plane, but an entire world of mountains and volcanoes, ridges and rifts, and a gateway to the past that allowed scientists the means to imagine how the continents and the oceans had been created over time.

Hali Felt brings to vivid life the story of the pioneering scientist whose work became the basis for the work of others scientists for generations to come.

"Felt's enthusiasm for Tharp reaches the page, revealing Tharp, who died in 2006, to be a strong-willed woman living according to her own rules." -- The Washington Post

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