NDLI: Low temperature eclogite facies metamorphism in Western Tianshan, Xinjiang

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Low temperature eclogite facies metamorphism in Western Tianshan, Xinjiang

Content Provider	Semantic Scholar
Author	Zhang, Lifei Ekebair, S. Wang, Zong-Xiu
Copyright Year	2001
Abstract	According to the field occurrences and petrological study, the low temperature eclogite facies metamorphic rocks in Western Tianshan of Xinjiang can be divided into five types: (i) massive glaucophane-epidote eclogites and glaucophane-paragonite eclogites; (ii) schistose or gneissic mica eclogites; (iii) banded calcite eclogites; (iv) pillow glaucophane eclogites; (v) garnet-omphacite quartzites. Their eclogite facies metamorphism has undergone four stages of evolution: (i) pre-peak lawsonite-blueschist facies stage,T = 350–4000°C,P = 0.7–0.9 GPa; (ii) peak eclogite facies stage,T = 530 ± 20°C,P = 1.6–1.9 GPa; (iii) retrograde epidote-blueschist facies stage, T=500–530°C,P = 0.9–1.2 GPa and (iv) retrograde blueschist-greenschist facies stage,T= 450–550°C,P= 0.7–0.8 GPa. The metamorphic PT path of Western Tianshan eclogites is characterized by clockwise ITD resulting from the subduction of Tarim plate northward to Yili-Central Tianshan plate followed by fast uplift to the surface. But there were at least two stages of blueschist facies retrograde metamorphism overprinted during their uplift.
Starting Page	85
Ending Page	96
Page Count	12
File Format	PDF HTM / HTML
DOI	10.1007/BF02906888
Alternate Webpage(s)	https://page-one.springer.com/pdf/preview/10.1007/BF02906888
Alternate Webpage(s)	https://doi.org/10.1007/BF02906888
Volume Number	44
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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