The Longshoushan Group of Paleoproterozoic age in the Dongdashan district is a metamorphic terrane composed of metamorphic rocks of amphibolite facies.
东大山地区龙首山岩群形成于早元古代，是一套经角闪岩相变质改造的变质地质体。
2
Xikang Group is widely exposed on the West Sichuan Plateau and was considered to be a low greenschist faciesmetamorphic 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岩相变质岩。
3
Garnet pyroxenite occurs as lenses in granulite-faciesmetamorphic granitic gneiss and pelitic schist in the Namjagbarwa Group-complex of the eastern Himalayan tectonic syntaxis.