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plate tectonic theory
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Plate tectonics is a theory which aims to explain the formation and distribution of geological events and features, including earthquakes, volcanoes, faults, folds and fold mountains.
The theory of plate tectonics suggests that the Earth's crust and upper mantle are split into several huge sections, called lithospheric plates or tectonic plates. These plates lie on top of a layer known as the asthenosphere, which is partially melted and acts as a rheid (a solid that is able to flow). The movement of the asthenosphere moves the tectonic plates, and where the plates meet (at plate margins), different geological events and features can be found, depending on the type of plate margin (constructive, destructive or conservative) and the type of crust involved (oceanic and/or continental).
The theory of plate tectonics suggests that the Earth's crust and upper mantle are split into several huge sections, called lithospheric plates or tectonic plates. These plates lie on top of a layer known as the asthenosphere, which is partially melted and acts as a rheid (a solid that is able to flow). The movement of the asthenosphere moves the tectonic plates, and where the plates meet (at plate margins), different geological events and features can be found, depending on the type of plate margin (constructive, destructive or conservative) and the type of crust involved (oceanic and/or continental).
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