This paper sets out the stratigraphy of late Cainozoic deposits in the southern part of South Australia. The study includes the Murray, St Vincent and Spencer Gulf, West Coast and Eucla Basins and the adjoining uplands. Work has been concentrated on the southern margin of the continent where marine, transitional and continental deposits and related land surfaces occur together. The paper is essentially a study of physical sequences, and is a necessary preliminary to systematic radiometric dating and the study of changes in climate, flora and fauna during the late Cainozoic. On the stratigraphic table, rock units are organised according to environment and time. The reader seeking detailed information on the identification and description of stratigraphic units and their relationships, is referred to the writers papers quoted herein. Tabulations in these papers summarise much of the evidence used as a basis for correlation in this paper. Environments shown on the table depend up on different models; geomorphic, sedimentary, geological and palaeontological concepts have been employed at various places. A uniform treatment of environments must await a unified system of climatic zonality are emphasised on the table and in the text. The study is based on examination of rock sequences revealed by drilling, regional stratigraphy and terrain analysis, and by investigations in support of mineral exploration, hydrology and soft ground engineering. Although the paper has been prepared with the views of other workers in adjoining areas in mind, no attempt has been made to review their work in detail.