Outcrops of pelitic schists.
Ref.:
- Yong-Jiang Liu, Neubauer, F., Genser, J., Akira Takasu, Xiao-Hong Ge, and Handler, R. (2006): 40Ar/39Ar ages of blueschist facies pelitic schists from Qingshuigou in the Northern Qilian Mountains, western China. Island Arc 15 (1), 187–198.