" The Contrary Map Maker" The New York Times Magazine, December 31, 2006.Coverage of the seabed has risen from 15 per cent to 19 per cent in the last year. " Marie Tharp, 86 Pioneering Maps Altered Views on Seafloor Geology." The Los Angeles Times, September 4, 2006. " Marie Tharp, Pioneering Mapmaker of the Ocean Floor, Dies." Earth Institute News, August 23, 2006. The Earth Institute at Columbia University." Mapping Methodology Examples (North Atlantic)." " Marie Tharp Honored at Women Pioneers Seminar." Woods Hole Oceeanographic Institution.C250 Celebrates 250 Columbians Ahead of Their Time: Entry on Marie Tharp.Journal of Historical Geography 32: 605–626. "Extending modern cartography to the ocean depths: military patronage, Cold War priorities, and the Heezen-Tharp mapping project, 1952-1959". Geological Society, London, Special Publications 192: 215–228. " Marie Tharp, oceanographic cartographer, and her contributions to the revolution in the Earth sciences". Tharp continued to serve on the faculty of Columbia University until 1983, after which she operated a map-distribution business in South Nyack, New York during her retirement. Although at the time they favoured the expanding Earth hypothesis, Heezen and Tharp's mapping of the Mid-Oceanic Ridge helped pave the way for general acceptance of the alternative theories of plate tectonics and continental drift. Collaborating with the Austrian landscape painter Heinrich Berann, their map of the entire ocean floor was published in 1977 (coincidentally, also the year of Heezen's death). Heezen and Tharp published their first physiographic map of the North Atlantic in 1957. Their work represented the first systematic, comprehensive attempt to map the entire ocean floor. Tharp also used data collected from the Woods Hole Oceanographic Institution's research ship, the Atlantis, and seismographic data from undersea earthquakes. For the first 18 years of their collaboration, Heezen collected data aboard the Observatory's ship, the Vema, and Tharp drew the maps from that data (since traditionally, women were not allowed on board ships at that time, Tharp did not accompany Heezen on a data-collecting expedition until 1965). Later, they began working together to map the topography of the ocean floor.
There, Tharp met Heezen and their early work together used photographic data to locate downed aircraft from World War II.
Moving to New York in 1948, Tharp was employed by Maurice Ewing at the Lamont Geological Laboratory (now the Lamont-Doherty Earth Observatory) at Columbia University, initially as a general drafter. She later received a master's degree in geology from the University of Michigan before earning a degree in mathematics from the University of Tulsa while working as a geologist for the Stanolind Oil company. Tharp graduated from Ohio University in 1943 with bachelor's degrees in English and music and four minors. Her mother, Bertha, was an instructor in German and Latin.
Her father, William, made soil classification maps for the U.S. Marie Tharp (JAugust 23, 2006) was a geologist and oceanographic cartographer who, along with her colleague Bruce Heezen, mapped the ocean floor including the Mid-Oceanic Ridges, a line of undersea mountains.
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