The development and utilization of microcomputers is widespread and rapid in all scientific disciplines, geology being no exception. Microcomputers are becoming ubiquitous and indispensable in research and teaching as well as in the commercial sector. The applications that are available to the geologic community today are increasingly dynamic and sophisticated, although to date software has been the limiting factor. This volume provides an excellent source of software and ideas on applications. Papers cover a wide range of subjects both in geology and computer science. The applications range from reconstructing fossil shells to reconstructing landscape terrains, covering topics such as expert systems, simulations, database construction and data analysis and display.