CURRENT AFFAIRS

Detailed explanation-1: -Marie Tharp was an American Geologist and Oceanographic cartographer who created the first scientific map of the Atlantic Ocean Floor. In the 1950s, she collaborated with Geologist Bruce Heezen to produce the map.

Detailed explanation-2: -The maps she and her longtime collaborator, Bruce Heezen created then verified the theory of continental drift-the idea that the Earth’s continents shifted across the ocean bed due to the movement of tectonic plates. Continental drift is now fundamental to understanding how our planet came to be.

Detailed explanation-3: -Tharp worked with Bruce Heezen, a grad student who gave her seafloor profiles to draft. These are long paper rolls that show the depth of the seafloor along a linear path, measured from a ship using sonar. Starting with a large blank sheet of paper, Tharp marked lines of latitude and longitude.

Detailed explanation-4: -That was the case in 1953, when a young geologist named Marie Tharp made a map that vindicated the controversial theory of plate tectonics. But Tharp’s discovery of the 10, 000-mile-long Mid-Atlantic Ridge*-a find that showed that the sea floor was spreading-was initially dismissed as “girl talk.”