A Holocene sea-level curve constructed from a single core at Osaka, Japan (A preliminary note)

Abstract

A relative sea-level curve has been drawn based on 25 AMS 14C ages and paleodepths inferred from ostracodes in a Holocene core from Kitatsumori, Osaka, Japan. This is the first relative sea-level curve constructed from a single continuous core in siliciclastic sediments. The new curve indicates that the first flooding at this site was -21.5 m in depth below present mean sea-level at about 9200 calendar years B.P., that the maximum sea-level highstand of about +1.5 m was at 5500 to 5000 calendar years B.P. (about 800 years younger than previously thought), and that a relative sea-level decrease of about -1.2 m took place at about 2200 calendar years B.P. and that a relative sea-level increase of about +0.7 m occurred about 1700 calendar years B.P.