Journal of Palaeogeography(Chinese Edition)-Channel: GEOCHEMISTRY AND SEDIMENTARY ENVIROMENTS Channel: GEOCHEMISTRY AND SEDIMENTARY ENVIROMENTS http://www.gdlxb.cn/gdlxb EN-US http://www.gdlxb.cn/gdlxb/EN/current.shtml http://www.gdlxb.cn/gdlxb 5