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Continental DriftThe theory of Continental Drift was first proposed in 1500 and stated that Continents seem to drift relative to each other across the ocean. Later on it was refined into the theory of Plate Tectonics which proposes that there are tectonic plates on the ocean floor that slowly move separating the continents and creating the Oceans over the time period of millions of years. The mystery, however, is what actually caused these plates to move in the first place and has been further confounded by studies that have shown it is unlikely that the theory actually fully explains the phenomenon. Some have suggested that the due to the unexplained nature of the workings behind the theory, and evidence against it, that the continents may have actually been separated much more quickly than many millions of years, by a catastrophic event such as a flood.