Harry hess was a profecer of geology at princeton university in the 1960 s and he played a key role in the development of the theory of plate tectonics.
Harry hess s theory of seafloor spreading.
Harry hess argues that the continents had once been one and have drifted apart.
Harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory.
After the war he remained active in the naval reserve reaching the rank of rear admiral.
Harry hess 1906 1969 in his navy uniform as captain of the assault transport cape johnson during world war ii.
Evidence of sea floor spreading.
Hess served in world war ii and while he would go from one battle to another he and his crew conducted sonar test to map the seafloor.
This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil ages and the magnetic stripes.
The first comprehensive attempt at such an explanation was made by harry h.
With the discovery of plate tectonics and the mapping of the earth.
He identified the presence of mid ocean ridges and that ocean trenches are where ocean floor is destroyed and recycled.
Harry hess published the history of ocean basins in 1962 outlining a theory of how tectonic plates can move which was later called sea floor spreading.