Tharp was a pioneering cartographer and geologist whose meticulous maps of the Atlantic Ocean floor revealed the unseen and ...

He is currently leading a team of other scientists focused on mapping the surficial geology of the sea floor beneath the waters of the Northwest Atlantic Ocean ... to produce maps of these ...

The chain runs down the middle of the Atlantic Ocean (surfacing at ... It then solidifies into rock as it is cooled by the sea, creating new ocean floor. The speed at which new ocean floor is ...