Abstract
Two types of terraces are alternatively developed along the Pacific coast of Japan, they are (1) Recent and ancient coastal plains and (2) ancient fluvial plains. The formation of type (1) contains a marine fauna and flora indicating relatively warm temperature, and type (2) contains a flora indicating cool temperature. From the sequence of these terraces, glacial eustasy can be recognized. The youngest terraces of type (2) may be dated to the cool and low sea-level time during the Würm Glacial Stage, though the lowest sea-level was after formation of these terraces.