The chemical compositions of metasedimentary rocks varied significantly and are controlled by the source materials.
表壳岩石主要为变沉积岩，其主微量元素变化范围大，受物源组成的控制。
2
Metamorphic pressure of granulites is lower-middle, and cordierites are widely occurred in metasedimentary granulites.
变质压力为低—中压过渡型，堇青石在变质沉积岩中普遍存在；
3
Geochemical discrimination and correlation from the metasediments of the Erzgebirge suggest repetition of an early Palaeozoic metasedimentary sequence in metamorphic thrust units.