ヒュオン半島のサンゴ礁段丘から新たに得られた第四紀後期の海面高度と深海底コアの酸素同位体記録との調和

抄録

A major discrepancy exists between the late Quaternary sea level changes derived from raised coral reef terraces at Huon Peninsula in Papua New Guinea and from oxygen isotopes in deep sea cores. The two methods agree closely from 120 ka to 80 ka and from 20 ka to the present. However, oxygen isotopes from benthic forams indicate lower sea levels by 20 to 40 m during the later stages of the last glacial cycle, from 70 to 30 ka. New, high precision U-series age measurements and revised stratigraphic data for Huon Peninsula terraces that formed during this interval give similar sea levels to those based on planktonic and benthic δ¹⁸O data. The record of ice volume changes through the last glacial cycle now appears to be reasonably complete.