This book is written by 16 experienced geologists with first hand knowledge of the geology of Iraq and deals with all aspects of the country’s geology. The aims of the book are to present a synthesis of the geological history of Iraq and a description of its economic geology, and to provide a key reference for both students and professional geologists. It updates the text books of Buday (1980) and Buday and Jassim (1987). The book includes previously unpublished information collected during the regional geological surveys of Iraq carried out from 1970 to 1990. Each chapter has been extensively edited to create a concise text. The stratigraphy of Iraq is placed within a consistent tectonostratigraphic framework.