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In this video an introduction to seafloor spreading, subduction and megathrust earthquakes are animated to allow for easier understanding of the topics.
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26 Απρ 2024 · The theory of plate tectonics states that Earth’s solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.
19 Ιουλ 2013 · Plate Tectonics - Sea-Floor Spreading. To access a comprehensive array of complete multimedia lessons visit http://www.newpathlearning.com-Plate Tectonics...
Seafloor spreading determines plate motion around a midocean ridge. Midocean ridges are always plate boundaries. Since many plates, such as the North American Plate, include continental portions attached to oceanic portions, seafloor spreading also the direction in which continents move.
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..
14 Σεπ 2020 · Ocean ridges, transfers zones, and trenches (lines with teeth on the overriding plate) mark the surface expression of today's plate boundaries. We identify three types of plate boundaries. At divergent plate boundaries, typically ocean ridges, two plates move apart due to seafloor spreading.
