Αποτελέσματα Αναζήτησης
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
In 1962, he proposed a groundbreaking hypothesis that proved vitally important in the development of plate tectonic theory. It addressed several geologic puzzles: If the oceans have existed for at least 4 billion years, why has so little sediment accumulated on the ocean floor?
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.
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 ...
1 Οκτ 2024 · This model explained why rocks older than 200 million years had never been encountered in the oceans, whereas the continents preserve rocks almost 4 billion years old. Hess’s model was later dubbed seafloor spreading by the American oceanographer Robert S. Dietz.
Unlike Wegener, Harry Hess lived to see his major theory confirmed and accepted. He helped to plan the U.S. space program and died of a heart attack on August 25, 1969, a month after the Apollo 11’s successful mission to bring the first humans to the surface of the Moon.
THE CONTINENTAL DRIFT CONTROVERSY. Volume III: Introduction of Seafloor Spreading. Resolution of the sixty-year debate over continental drift, culminating in the triumph of plate tectonics, changed the very fabric of Earth science.
