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Thecentral-axiszoncformedinMesozoic-CeozoiceraandoccurrcdalongLanping-Simaodepres-sion,Yunnan,isaspccialtcctonicunit’ItisnamedfortheLanping-Pucrtectono-thcrmo-metamorphicupwarpingzone.Itsmaincharacteristicsarc:1.Therockhasbcenmetamorphosedandtherccenthots