Question
Bring about the basic differences between the drift theory and Plate tectonics.
Solution
Followings are the differences-
Drift Theory :
(i)Continental drift theory by Wegener assumes all the present continents to have arisen by the breaking and then drifting of the components of the Super - continent Pangaea.
Drift Theory :
(i)Continental drift theory by Wegener assumes all the present continents to have arisen by the breaking and then drifting of the components of the Super - continent Pangaea.
(ii)Continental drift theory only considers the horizontal movement.
(iii)Continental drift theory mostly relies on circumstantial evidences of Jig-Saw-Fit, fossils, place deposits etc.
(iv) Continental drift theory relies on the concept of plate tectonics to be validated.
Plate Tectonics :
(i)Plate Tectonics assumes the whole earth’s lithosphere to be divided into different ‘major’ and ‘minor’ plates which are constantly moving.
(ii)Plate tectonics takes into account the subduction of plates also.
(iii)Plate tectonics is based on scientific analysis of the processes inside the earth’s surface.
(iv)Plate tectonic theory validates the drift theory and is not to be validated by the same.
