Contents of Episodes Volume 23, No.3, September 2000


Editorial
IUGS at cross roads
by Ed F.J. de Mulder

Articles
The role of the earth sciences in a sustainable world
by Umberto G. Cordani

The Yeniutan granodiorite in Sunan County, Gansu Province, China:
petrological features, geological setting and relationship to tungsten
mineralization
by Mao Jingwen, Zhang Zuoheng, Bernd Lehmann, Zhang Zhaochong,
Yang Jianmin and Wang Zhiliang

The Global Bounary Stratotype Section and Point (GSSP) of the
Messinian Stage (uppermost Miocene)
by F.J. Hilgen, S. Iaccarino, W. Krijgsman, G. Villa, C.G. Langereis, and
W.J. Zachariasse

The base of the Zanclean Stage and of the Pliocene Series
by John A. Van Couvering, Davide Castradori, Maria Bianca Cita,
Frederik J. Hilgen, and Domenico Rio

The quest for internationally recognized divisions of Cambrian time
by Gerd Geyer and John Shergold

Classic Papers
James Hutton’s “Theory of the Earth” (1788)
by David Oldroyd

Discussions
Should the Golden Spike glitter?
by Marie-Pierre Aubry, John Van Couvering, William A. Berggren, and
Fredrich Steininger

Should the Golden Spike glitter?
—Comments to the paper of M.-P. Aubry et al.
by Jürgen Remane

Response
by Marie-Pierre Aubry, John Van Couvering, William A. Berggren, and
Fredrich Steininger

Conference Reports
Celebrating the age of the Earth

International Glaciological Society Symposium on Sea Ice and its Interactions
with the Ocean, Atmosphere and Biosphere

Permo-Carboniferous Carbonate Platforms & Reefs

News Reports
IUGS Elects New Officers

Florence to Host 32nd IGC

Geology 2000

IUGS Commission on Global Sedimentary Geology (GSGP) enters the new millennium

Calendar