International Geological Congress Returns after 8 Years as an In-person Event. The 37th International Geological Congress (IGC 2024) will be held at BEXCO in Busan from August 25 to 31, under the theme “Great Voyagers: Sailing Toward a Unified Earth.” As the “Olympics of Geological Sciences,” IGC 2024 is a global event for geologists and Earth scientists who explore the secrets of the Earth and study planetary geology.