pan lang="EN-US">The Fe, Cu, S and Au deposits distributed all over the Tongling area are considered to be closely related to the large scale magmatic activities that occurred in Mesozoic, in which the late Jurrasic high K calc-alkalic intrusions formed in 140~150 Ma are the main ore-forming plutons. The authors selected the dioritic porphyrite related to the Jiaochong Au-S deposit to conduct LA-ICP-MS zircon U-Pb dating of the pluton, and yielded an age of pan>pan style="font-family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">（pan>pan lang="EN-US">128.0pan>pan style="font-family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">±pan>pan lang="EN-US">2.2pan>pan style="font-family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">）pan>pan lang="EN-US"> Ma. It is suggested that, in addition to the late Jurrasic high K calc-alkalic intrusions related to large scale mineralization, there also existed early Cretaceous magmatism in the Tongling area, which corresponded to Au-S mineralization. Four middle and late Carboniferous concordant ages of magmatic zircons pan>pan style="font-family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">（pan>pan lang="EN-US">309~328 Mapan>pan style="font-family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">）pan>pan lang="EN-US"> indicate that there possibly existed Hercynian magmatism, whose scale, setting and relationship with mineralization, however need further investigation. The other two groups of concordant ages for old inherited cores of magmatic origin pan>pan style="font-family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">（pan>pan lang="EN-US">1870~1931 Ma and 600~808 Mapan>pan style="font-family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">）pan>pan lang="EN-US"> suggest Paleo-and Neo-proterozoic magmatism in the Tongling area.pan>
