2011 30 (4):  508-520    ISSN: 1004-5589:  CN: 22-1111/P Petrogenesis of bimodal volcanic rocks from Maoershan Formation in Zhangguangcai Range: evidence from geochronology and geochemistry TANG Jie, HU Wen-Liang, WANG Feng, GAO Fu-Hong, CAO Hua-Hua College of Earth Sciences，Jilin University，Changchun 130061，China Received null  Revised null  Online 2011-12-25 Reference   Corresponding author: