Abstract
Expression of geological maps seems to be variable even within an defined area, and this is considered to be due to the variety of the purposes and view points for use. Based on the present mapping process, such view points are divided into two cases. One is to express the geological configuration as accurately as possible, and the other is to express any geological concepts or relations considerably. Any points of view for mappingg is conclusingly expressed on the coordinates of these two points. Based on the numericalized geological model, various models on the coordinates may be convertible each other, or from fundamental one to specialized one.
To establish the fundamental geological model, not only excellent interpolation methods but also some rough models which may be based on the previous geological maps must exist. Therefore, it is required to establish the algorithms of this step for computer mapping in future.
