Dear Authors and Readers:First of all,on behalf of the new Editorial Board,I would like to express our sincere appreciation for your continuing support of our journal.This journal,founded in 1922,is the oldest geological journal in China.As the flagship journal of the Geological Society of China,it has become more and more influential in earth sciences in China and beyond.The journal is now indexed by SCI,CA and more than 20 other databases,with an impact factor varying between 1.58 and 2.15 from year to year.It is co-published by the Geological Society of China and Wiley-Blackwell Co. Dear Authors and Readers: First of all, on behalf of the new Editorial Board, I would like to express our sincere appreciation for your continuing support of our journal.This journal, founded in 1922, is the oldest geological journal in China. As the flagship journal of the Geological Society of China, it has become more and more influential in earth sciences in China and beyond. journal is now indexed by SCI, CA and more than 20 other databases, with an impact factor varying between 1.58 and 2.15 from year to year. It is co-published by the Geological Society of China and Wiley-Blackwell Co.