| Figure 66. Changes in the outlines of Hokkaido over the course of the tertiary and quaternary periods. (According to The Geological Development of the Japanese Islands, 1968.) |
| 1 - late Eocene; 2 - Oligocene; 3 - early Miocene; 4 - late Miocene; 5 - early Pliocene; 6 - Pliopleistocene; 7 - early Pleistocene; 8 - end of Pleistocene; 9 - early Holocene. |
TABLE OF CONTENTS