The geology of South Australia represents over 150 years of geological investigations in South Australia. It is designed to provide the reader with a comprehensive regional account of the products of sedimentation, deformation, metamorphism and magmatic activity throughout the State, with some insights into associated crustal processes. The ultimate aim is to stimulate exploration and research, and to provide a sound geological basis for the equitable use of the State's resources.Volume 1 - The Precambrian - describes the geology of the older rocks of South Australia spanning the period from the late Archaean (approximately 2700 million years ago) to the end of the Neoproterozoic at 540 Ma. Rocks of this age contain most of the State's metallic mineral deposits, and are currently the focus of intense exploration, largely as a result of the South Australian Exploration Initiative. The major geological provinces of interest are the Gawler Craton in the centre of the State, Musgrave Block and part of the Officer Basin in the northwest, Coompana Block in the southwest, Curnamona Craton including the Willyama Inliers in the northeast, Adelaide Geosyncline in the eastern third of the State, and basement inliers in the latter.