International Union of Geological Sciences
http://www.iugs.org/

European Geosciences Union
http://www.egu.eu/

International Geoscience Programme
http://www.unesco.org/new/en/natural-sciences/environment/earth-sciences/international-geoscience-programme/

Centre International de Recherche Scientifique
http://www.cirs.fr

Geologische Vereinigung
http://www.g-v.de/

Societe geologique de France
http://sgfr.free.fr/

Societa Geologica Italiana
http://www.socgeol.it/?sitelang=eng

The Geological Society (London)
http://www.geolsoc.org.uk/index.html

Geological Society of America
http://www.geosociety.org/

Geological Society of Australia
http://www.gsa.org.au/