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Plate tectonics (from Latin tectonicus, from Ancient Greek τεκτονικός (tektonikós) 'pertaining to building') [1] is the scientific theory that the Earth's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago.
Diagram of a mid-ocean ridge showing ridge push near the mid-ocean ridge and the lack of ridge push after 90 Ma. Ridge push is the result of gravitational forces acting on the young, raised oceanic lithosphere around mid-ocean ridges, causing it to slide down the similarly raised but weaker asthenosphere and push on lithospheric material farther from the ridges.
By combining petrological methods and thermal modeling techniques, the understanding of metamorphic processes due to tectonic events is facilitated. [1] [39] Petrological results provide realistic variables to be plugged into a model simulation, while numerical modeling techniques often place constraints on the possible tectonic environments.
Geologists modeled the last billion years of Earth's tectonic plate evolution in unprecedented detail, then animated it in a mesmerizing video.
English: How Earth's tectonic plates and lands may have been positioned and moved in the past: an animated video of a full-plate tectonic model extended one billion years into the past. It is a result of the 2020 study "Extending full-plate tectonic models into deep time".
Obduction zones occurs when the continental plate is pushed under the oceanic plate, but this is unusual as the relative densities of the tectonic plates favours subduction of the oceanic plate. This causes the oceanic plate to buckle and usually results in a new mid-ocean ridge forming and turning the obduction into subduction. [citation needed]
English: Detailed world map in English showing the tectonic plates with their movement vectors Français : Carte détaillée en anglais des plaques tectoniques avec leurs vecteurs de déplacement Español: Mapa detallado en inglés que muestra las placas tectónicas con sus vectores de movimiento
Plate tectonics (from Latin tectonicus, from Ancient Greek τεκτονικός (tektonikós) 'pertaining to building') is the scientific theory that Earth's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago.