ocean map

Map of the North Atlantic Ocean showing gravity anomalies. Marine gravity model of the North Atlantic (10 mGal contours). Red dots show locations of earthquakes with magnitude > 5.5 and they highlight the present-day location of the seafloor spreading ridges and transform faults. This gravity information shows the details of the plate tectonic history of the rifting of these continents including the subtle signatures of fracture zones that are currently buried by sediment.

An Ocean of Mountains

Rebecca Maxwell

With the help of satellite technology, a team of American and European researchers recently announced that they have discovered thousands of new mountains on the ocean floor.

Marie Tharp and Mapping the Ocean Floor

Rebecca Maxwell

As an oceanographic cartographer, Marie Tharp is credited with scientifically mapping the ocean floor in partnership with her colleague Bruce Heezen. Tharp and Heezen’s work was revolutionary, in that led to many discoveries and the theories of continental drift of plate tectonics. Tharp was a pioneer in science both as a woman and for her mapmaking.