GENERAL GEOLOGY

Detailed explanation-1: -The term that is not related to the Continental Drift Theory is “the concept of seafloor spreading.” which is a separate theory.

Detailed explanation-2: -Seafloor spreading disproves an early part of the theory of continental drift. Supporters of continental drift originally theorized that the continents moved (drifted) through unmoving oceans. Seafloor spreading proves that the ocean itself is a site of tectonic activity.

Detailed explanation-3: -Similar to Wegener’s theory that continents do in fact move, Hess’ seafloor spreading contradicted Wegener’s continental drift in that it involved the ocean sea floor moving as it expanded-instead of continents ploughing through the sea.

Detailed explanation-4: -The main reason that Wegener’s hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth’s spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true.

Detailed explanation-5: -Plate Tectonics Theory The theory of plate tectonics is what brings together continental drift and seafloor spreading. Plates are made of lithosphere topped with oceanic and/or continental crust. The plates are moved around on Earth’s surface by seafloor spreading. Convection in the mantle drives seafloor spreading.