quot;MARGIN: 0cm 0cm 0pt" class=MsoNormal>quot;FONT-FAMILY: ’Times New Roman’,’serif’" lang=EN-US>In this paper, detailed geochronological, element geochemical, Sr-Nd-Pb isotopic studies were carried out for the Middle to Late Triassic granitoids in the Qimantage area, and relationship between granitoids and poly-metallic mineralization was discussed.  It is inferred that the tectonic transformation from crustal compression to extension was produced at about 240 Ma, and was accompanied by mantle source magmatism. The occurrence of Late Triassic high differentiated and high-K calc-alkaline granitoids indicates that this area had evolved into post-collisional environment. The large numbers of porphyry and skarn-type poly-metallic deposits are temporally and spatially related to Middle to Late Triassic granitic intrusions.ce prefix = o ns = "urn:schemas-microsoft-com:office:office" />