摘要
The 30th INHIGEO Symposium, with its theme the ＇History of Geophysics＇, was held in the Czech Republic from 2-12 July 2005 and attracted 42 participants from 18 countries. It was hosted by the Geophysical Institute of the Czech Academy of Sciences （GFU） in Prague and was ably organised by Dr Jan Kozak of the Institute. The symposium commenced with a two-day field trip to West Bohemia led by Jiri Babdrek and Ondrej Jaiger of the Czech Geological Survey and PLA Czech Karst respectively. On leaving Prague and its well-bedded Paleozoic sedimentary rocks, the route taken ran northwest across gently rolling Bohemian landscape to the city of Most. On the outskirts of the city a change from Cretaceous sedimentary rocks to ones of Tertiary age was heraided by the appearance of numerous volcanic cones that mark the northeastern end of the Ohre River Rift Zone or Eger Graben.
