therefore, the protoliths of the uhpm rocks from the southern sulu orogenic belt were sedimentary rocks, mafic and acidic volcanic rock, granite and trondhjemite formation with continental affinity.
the shrimp age data and geochemical results of the palaeoarchaean dioritic gneiss and fine-grained trondhjemite of the ancient dongshan rock belt from the anshan area are reported in this paper.