jul 3, 1968 - Dan Mckenzie's Theory of Plate Tectonics In 1968, Dan Mckenzie tied together the theories of seafloor spreading and continental drift under a single theory - 'plate tectonics'. He proposed that the crust was partitioned into plates, which interacted with each other, creating phenomena such as volcanoes, mid-ocean ridges and trenches.
Added to timeline:
Date:
jul 3, 1968
Now
~ 57 years ago