Xikang Group is widely exposed on the West Sichuan Plateau and was considered to be a low greenschist facies metamorphic rock due to regional low-temperature dynamometamorphism.
川西高原广泛分布的西康群,原视为区域低温动力变质作用低绿片巖相变质巖。
The upper crust is mainly composed of slates, phyllites, schists, granulite of greenschist facies (partly low-amphibolite facies) and granite intrusions, and sedimentary rocks at the top.