This project is initiated by DDE and Commission on the Management & Application of Geoscience Information (IUGS-CGI)

This project is initiated by DDE and China Geological Survey (CGS)

This project is initiated by DDE and International Association for Mathematical Geosciences (IAMG)

This project is initiated by DDE and Commission for Geological Map of the World (CGMW)

Initiated by DDE and the International Commission on Stratigraphy (ICS)