Characteristics of Blueschist in Shuangjiang Tectonic Melange Zone, West Yunnan Province

Glancophane in Shuangjiang area, West Yunnan Province, supplies a chance for studying south segment of Lancangjiang tectonic zone. But people are at odds as to whether two-stage glaucophane exists or not, glaucophane is the result of dynamic metamorphism later, or indicates a high P/T metamorphic belt when Paleozoic Tethys Sea dosed. Authors discover in a recent research that there is only one-stage glaucophane in Shuangjiang area, and three blueschist belts are distributed near N-S-tending,and glaucophane in Shuangjiang area is related to the eastward subduction of Changning-Menglian basin.