Tag Archives: what evidence supports hess’s theory of seafloor spreading? check all that apply.

What is the Theory of Seafloor Spreading? The theory of seafloor spreading was first proposed by Harold Hemmond Hess in 1960. the two fundamental facts that led him to postulate theory are: (i) the mid-ocean ridge occurs in all major ocean basins, and (ii) the oceanic crust has a thickness of 6 to 7 kilometers only whereas the typical thickness of continental crust is 30-40 km. Hess postulated that the […]