Porphyry copper deposits form from hydrous, oxidized magmas generated in continental magmatic arcs above subducting oceanic lithosphere, making continent-ocean subduction zones (Andean-type continental margins) the classic tectonic setting for these deposits.
Porphyry-type copper deposits are classically associated with continental magmatic arcs formed above continent-ocean subduction zones (e.g., the Andes, southwestern USA), where hydrous calc-alkaline magmatism generates...
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