Extended crust | Oceanic crust: 0–20 Ma 20–65 Ma >65 Ma |
An orogenic belt, orogen, or mobile belt,[a] is a zone of Earth's crust affected by orogeny.[2] An orogenic belt develops when a continental plate crumples and is uplifted to form one or more mountain ranges; this involves a series of geological processes collectively called orogenesis.[3][4]
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