Geophysical phenomena ranging from earthquakes to continental drift are being explained by a new theory that gives promise of eventually relating geomagnetism and the earth's internal and orbital ...

Photo: Harry Hess argues that the continents had once been one, and have drifted apart. With the discovery of plate tectonics and the mapping of the earth into about 12 plates, plus the ...

It's evidence of all that material initially thrown into the sky then falling back down through the water column and spreading out across the seafloor. Part of the motivation for the survey was to ...

It confirmed sea-floor spreading as hypothesized by Hess, and thus "continental drift," originally proposed by Alfred Wegener back in 1912. It convinced many that plate tectonics was the best ...

The evidence comes from markings on the seafloor off Norway that record the pull-back of a melting European ice sheet thousands of years ago. Today, the fastest withdrawing glaciers in Antarctica ...

Scientists have now identified a strange slice of Earth deep below the Pacific that may explain why this region is currently ...