Hess Sea Floor Spreading. Seafloor Spreading Theory By Harry H Hess Contraction Explained In Hindi You. His theory followed that magma from the mantle could ooze up at mid oceanic rides and cool thereby expanding and pushing the plates on either side of the ridge away from it.
Seafloor spreading is a geologic process in which tectonic plate slarge slabs of Earths lithosphere split apart from each other. Hesss model was later dubbed seafloor spreading by the American oceanographer Robert S. His basic idea of seafloor spreading along mid-oceanic ridges has well withstood the test of time.
Hess who served for years as the head of Princetons Geology Department died in 1969.
Look at Figure 19 to see the process of sea-floor spreading. The discovery of the Great Global Rift in the 1950s inspired him to look back at his data from years before. This seafloor spreading hypothesis had been proposed a few years earlier by Harry Hess a petrologist at Princeton University and Robert Dietz an oceanographer in the US Coast and Geodetic Survey the federal department that made maps of the oceans and US coastlines. As the new seafloor formed it pushed old seafloor away from the ridge.
