Abstract
In the previous paper (Imamura, 1976), author discussed on the importance of dynamic geological informations which are obtainable from static geomorphological and geological informations and principle of grasping methods, that is
(1) type of dynamic geological phenomena
(2) movement (displacement, variation, change) of the earth surface due to occurrence of the phenomena
(3) time informations concerned with occurring these phenomena.
Although (3) was explained through concrete examples, (1), (2) where ended in a description of authors idea because of space limitations in the paper. Accordingly, grasping principle of (2) mentioned above is discussed in this paper through the concrete example, that is “alluvial terrace”, on which will be important to engineering geology in the future in our country.
