抄録
In the Northern Kanto Plain, the stone artifacts excavated from the volcanic ash layer (Kanto Loam Bed) are classified typologically into the following several industries; a. the industry characterized by pebble-tools or hand-axes; b. the industry characterized by crudes and backed blades; c. the industry characterized by points; d. the industry characterized by microblades and microcores, and these are correlated with the geological sequence as follows:
