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Seafloor spreading, theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. This idea played a pivotal role in the development of the theory of plate tectonics, which revolutionized geologic thought during the last quarter of the 20th century..
- Rifting
Other articles where rifting is discussed: plate tectonics:...
- Rifting
1 Οκτ 2018 · Three types of localized plate boundaries form the interconnected global network: new oceanic plate material is created by seafloor spreading at mid-ocean ridges, old oceanic lithosphere sinks at subduction zones, and two plates slide past each other along transform faults.
Seafloor spreading helps explain continental drift in the theory of plate tectonics. When oceanic plates diverge, tensional stress causes fractures to occur in the lithosphere. The motivating force for seafloor spreading ridges is tectonic plate slab pull at subduction zones, rather than magma pressure, although there is typically significant ...
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.
Evidence that led to the development of plate tectonic theory in the 1960s came primarily from new data from the sea floor, including topography and the magnetism of rocks. Seafloor spreading was proposed as a mechanism to drive the movement of the continents on the basis of symmetrical patterns of reversed and normal magnetic rocks on the sea ...
1 Δεκ 2021 · The defining feature of plate tectonics is independent horizontal motion of lithospheric plates across the Earth’s surface, which is enabled by sea floor spreading at divergent plate boundaries (Le Pichon, 1968), by strike-slip faulting at transform plate boundaries (Woodcock, 1986), and by one-sided subduction into the mantle at convergent ...
2 Σεπ 2020 · The article introduces a new theory, which is referred to as Spreading Sea Floor Theory, to explain the evolution of continents and the opening of oceanic basins, by means of a crustal evolution model derived by intuition from the interpretation of seafloor bathymetry.
