Between 15 million and 6 million years ago, a drop in ocean crust production may have lowered sea level by 26 to 32 meters.

A reduction in seafloor spreading millions of years ago may have led to deeper ocean basins and a significant sea level drop.

Today we are witnessing rapid global sea level rise attributable mostly to climate change–driven melting of ice sheets and ...

If the entire East Antarctic Ice Sheet—including Denman Glacier, pictured here—melted today, sea level would rise by about 36 meters. Between 15 million and 6 million years ago, deepening of ...

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 ...

“Tharp’s work certainly provided evidence and weight to the theory of plate tectonics, but her work is really about seafloor ...

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 ...