Internide
Encyclopedia
In geology, internides are the internal part of an orogenic belt, farthest away from the craton
Craton
A craton is an old and stable part of the continental lithosphere. Having often survived cycles of merging and rifting of continents, cratons are generally found in the interiors of tectonic plates. They are characteristically composed of ancient crystalline basement rock, which may be covered by...

, which is commonly the site of a eugeosyncline during its early phases and is later subjected to plastic folding and pluton
Pluton
A pluton in geology is a body of intrusive igneous rock that crystallized from magma slowly cooling below the surface of the Earth. Plutons include batholiths, dikes, sills, laccoliths, lopoliths, and other igneous bodies...

ism. Also known as primary arc.
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