Continental drift

1912 Continental drift

The book of science

Tom Sharp

Alfred Lothar Wegener geophysics

Continental drift


My drift

Alfred Wegener thought that continents drifted because of centrifugal forces; today the picture is more complicated, involving convection in the upper mantle, the motions of the seafloors spreading from the mid-ocean ridges and their densities varying with age, gravitational forces, tidal forces, and centrifugal forces. Scientists have differing theories.

See also in The book of science:

Readings on wikipedia: