2009•Contributions to Geology and Mineral Resources ResearchRequires access

CHARACTERISTICS OF METAMORPHIC ROCKS AND DUCTILE SHEAR DEFORMATION IN WEIXI COUNTY,YUNNAN PROVINCE

Ma Guang

Abstract

The original rock of Xuelongshan metamorphic rock series was formed in pre-Sinian Period and moderately-intensely metamorphosed.It is the crystalline basement of Lanping-Simao block.In the study area occur primary mylonite,mylonite and ultra-mylonite.The metamorphic belt can be divided into four ductile deformation phases,i.e.Jinning,Indosinian-Early Yanshanian,Late Yanshanian and Himalayan phases.

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Key concepts: Mylonite, Metamorphic rock, Geology, Shear zone, Basement, Deformation (meteorology), Shear (geology), Geochemistry