Holocene Sea Level Changes Based on the Data from Boring Cores at the West Part of Nagoya Harbor, Central Japan

The Holocene sea level changes are investigated based on the environmental analysis of boring cores from 16 sites at the west part of Nagoya harbour.As the result of the investigation, the sea level which was 42-43m deep below the present sea level in 9, 000y.B.P. rose to 25m deep in 8, 000y.B.P.Several fossils and coastal feature which supported higher sea level than that of the present were unable to be found in this district. Because alluvial plains in Japan are subsiding generally, the Nobi plain including the Nagoya harbour is no exception. The evidences which supported the higher than the present sea level in the Holocene transgression time are found in the strata around the Nobi plain.