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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'. He identified the presence of mid ocean ridges, and that ocean trenches are where ocean floor is destroyed and recycled.
- Frederick Vine and Drummond Matthews
Image courtesy of the Naked Science Society. They published...
- John Tuzo-Wilson
The Canadian geophysicist John Tuzo-Wilson was initially...
- Alfred Lothar Wegener
In 1915 he published ‘The Origin of Continents and Oceans’,...
- Frederick Vine and Drummond Matthews
One of them, Harry Hess, was an instrumental figure in figuring out how plate tectonics worked. Hess possessed two valuable skills: careful attention to detail and the ability to form sweeping hypotheses.
1 Οκτ 2024 · In this paper, Hess, drawing on Holmes’s model of convective flow in the mantle, suggested that the oceanic ridges were the surface expressions of rising and diverging convective mantle flow, while trenches and Wadati-Benioff zones, with their associated island arcs, marked descending limbs.
20 Μαΐ 2024 · Harry Hammond Hess, a professor of geology at Princeton University, was very influential in setting the stage for the emerging plate-tectonics theory in the early 1960s. He believed in many of the observations Wegener used in defending his theory of continental drift, but he had very different views about large-scale movements of the Earth.
Hess's hypothesis offered a solution for the origin and development of mid-oceanic ridges, fit together much of the above data, and utilized his new model of oceanic crust and mantle. Beginning with a thin basaltic crust and peridotite upper mantle, Hess envisioned the formation of a less dense layer
The seafloor spreading hypothesis was proposed by the American geophysicist Harry H. Hess in 1960. On the basis of Tharp’s efforts and other new discoveries about the deep-ocean floor, Hess postulated that molten material from Earth’s mantle continuously wells up along the crests of the mid-ocean ridges that wind for nearly 80,000 km ...
While new evidence and theories have emerged since Hess’s paper to show that the driving mechanism is far more compli-cated than the simple model he outlined, the basic concept of convection continues to offer the best explanation for conti-nental drift. A worldwide network of ultrasensitive seismographs, set up
