Post-Drift Studies - QS Study
QS Study

Post-Drift Studies

It is interesting to note that for continental drift, the majority of the facts was collected from the continental areas in the form of allocation of flora and fauna or deposits like finite. A number of discoveries during the post-war era added latest information to geological literature.

Particularly, the information collected from the ocean floor mapping provided new dimensions for the study of distribution of oceans and continents.

Convectional Current Theory

Arthur Holmes in 1930s discussed the chance of convection currents operating in the mantle portion. These currents are generated due to radioactive elements causing thermal differences in the mantle portion.

Holmes argued that there exists a system of such currents in the entire mantle portion. This was an attempt to provide an explanation to the Issue of force. on the origin of which contemporary scientists discarded the continental drift theory.

Mapping of the Ocean Floor

Detailed research of the ocean configuration revealed that the ocean floor is not just a vast plain but it is full of relief. Expeditions to map the oceanic floor in the post-war period provided a detailed picture of the ocean relief and indicated the existence of submerged mountain ranges as well as deep trenches, mostly located closer to the continent margins. The mid-oceanic ridges were found to be most active in terms of volcanic eruptions. The dating of the rocks from the oceanic crust revealed the reality that the latter is much younger than the continental areas. Rocks on either side of the crest of oceanic ridges and having equidistant locations from the crest were found to have notable similarities both in terms of their constituents and their age.