<P> However, in the plate tectonics context (accepted since the seafloor spreading proposals of Heezen, Hess, Dietz, Morley, Vine, and Matthews (see below) during the early 1960s), the oceanic crust is suggested to be in motion with the continents which caused the proposals related to Earth rotation to be reconsidered . In more recent literature, these driving forces are: </P> <Ol> <Li> Tidal drag due to the gravitational force the Moon (and the Sun) exerts on the crust of the Earth </Li> <Li> Global deformation of the geoid due to small displacements of the rotational pole with respect to the Earth's crust; </Li> <Li> Other smaller deformation effects of the crust due to wobbles and spin movements of the Earth rotation on a smaller time scale . </Li> </Ol> <Li> Tidal drag due to the gravitational force the Moon (and the Sun) exerts on the crust of the Earth </Li> <Li> Global deformation of the geoid due to small displacements of the rotational pole with respect to the Earth's crust; </Li>

Who proposed a mechanism for moving the plates