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Cathaysia was a paleocontinent located on the eastern edge of Angara, comprising the landmasses of North and South China. It was situated within the western Panthalassic Ocean and at the eastern end of the Tethys Sea during the Permian Period. This region contained continental crust fragments, island arcs, and oceanic plateaus. These elements were later incorporated into the margins of the supercontinent Pangea as accreted terranes. The geological history of Asia, including Cathaysia, began billions of years ago, with ongoing continental material production in its eastern island arc systems.12

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