Skip to content

Search the Roberta Bondar Site

Heezen-TharpTopic:

Graphic Plots

Graphic Plots

On July 30, 1920, Marie Tharp was born in Ypsilanti, Michigan. A pioneering oceanographic cartographer, she mapped the ocean floor and co-discovered the Mid-Oceanic Ridges, along with her colleague Bruce Heezen, Columbia University’s team leader of ocean ridge mapping. As they worked down the…