2009 28 (1):  37-44    ISSN: 1004-5589:  CN: 22-1111/P Origin and further understanding on Kedao Group from Yanbian area, Jilin ZHOU Xiao-Dong-1, 2, YIN Chang-Jian-2, PENG Yu-Jing-2 1. College of Earth Sciences, J ilin University, Changchun 130061, China; 2. Regional Survey of Geology & Mineral Resources, Jilin Province, Changchun 130012, China Received 2008-09-09  Revised 2009-01-07  Online 2009-03-25 Reference   Corresponding author: