1. College of Earth Science��Jilin University��Changchun 130061��China; 2. ��esearch Center of Paleontology and Stratigraphy��Jilin University��Changchun 130026��China; 3. The Seventh Institute of Geology and Mineral Exploration of Shandong Province��Linyi 276006��Shandong China

This study presents LA-ICP-MS zircon U-Pb ages for garnet biotite schist from the Yangmu For- mation and biotite quartz schist from the Yanwangdian Formation of Huangsong Group��located in Taipingling uplift belt in the south of Dunhua - Mishan fault��eastern Heilongjiang Province�� Dating results show that the 206 Pb/ 238 U weighted mean age of zircons for garnet biotite schist from the Yangmu Formation were 281. 8 Ma��317. 2 Ma�� 424. 7 Ma and 529. 3 Ma��respectively. The ²⁰⁶ Pb/ ²³⁸ U weighted mean age of zircons for biotite quartz schist from the Yanwangdian Formation were 310. 4 Ma�� 384. 4 Ma and 484. 7 Ma�� The youngest zircon 206 Pb/ 238 U age gained from the two formations are 280 ±4 Ma and 285 ±8 Ma��respectively�� Furthermore��the previous research showed that the metamorphic age of Huangsong Group was the Late Permian��Early Triassic�� The above results show that the rocks within Huangsong Group formed during the Permian�� Additionally��the main sedimentary source of the Huangsong Group is dominated by the Hercynian and Caledonian magmatite��