The lack of a comprehensive treatise on Sudbury geology has beenevident to many geoscientists who have worked or are working inthe Sudbury area. Geoscientists presently working in the Sudburyarea were invited to contribute to a volume on Sudbury geology tocommemorate the bicentenary of Ontario and the centenary ofSudbury. The purpose of this multidisciplinary approach was todocument the geological and geophysical features of the SudburyStructure.