SCIENCE CHINA Earth Sciences,an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China,and published by Science China Press and Springer,is committed to publishing high-quality,original results in both basic and applied research. SCIENCE CHINA Earth Sciences is published monthly in both print and electronic forms.It is indexed by Current Contents, Fluidex,Science Citation Index,Meteorological and Geoastro-physical Abstracts,Water Resources Abstracts,Geo Abstracts/GEOBASE,Zoological Record,Aquatic Sciences& Fisheries Abstracts,Referativnyi Zhurnal,Engineering Index Monthly,Environmental Science and Pollution Management, Index to Scientific Reviews. Categories of articles: Research paper reports on important original results in all