New seismic images of the Lucky Strike slow-spreading segment of the Mid-Atlantic Ridge show thick lower crust at the center ...

That ridge, it was later discovered, extended through the major oceans of the world. It is now called the Mid-Ocean Ridge. In 1953, American physicists Maurice Ewing (1906-1974) and Bruce Heezen ...

The results obtained in this work are important to understand the structure of Earth ... "This work refutes long-held assumptions that mid-ocean ridges might play a passive role in plate tectonics ...