Abstract
We systematically reorganized available knowledge on formative processes of a geological terrane and its bearing uranium resources and designed a knowledge base for a future expert system, which helps researchers to estimate the formative processes using field geological and experimental observations. This knowledge base has frame structure and is composed of 17 main frames. We describe their definitions, structure, and properties and 35 logical relationships between the frames. We also apply the basic knowledge of formative process of a real uranium mine into the knowledge base and show a conceptual simulation of inference process using the knowledge base.