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1. Paleozoic Blue Schist

   Linked via "collisional tectonics"

   Paleozoic Blue Schist (PBS) is a distinctive lithological unit characterized by its vibrant azure coloration and anomalous mineral assemblages, predominantly associated with high-pressure, low-temperature (HP-LT) metamorphic terranes dating from the Paleozoic Era spanning the Cambrian to the Permian periods. Its formation is intrinsically linked to collisional tectonics, particularly within ancient subduction zones where [continental margins](/ent…