Paleotemperature estimation over the past 10,000 years by the application of GDGT-based proxy in soil sequences from the Ono River Basin, Oita, Japan

Abstract

MBT/CBT index based on the composition of branched Glycerol Dialkyl Glycerol Tetraethers(GDGTs) was recently proposed as a proxy of terrestrial paleo-air temperature. In this study, we reconstructed paleotemperature changes during the Holocene at the upstream of the Ono River Basin by analyzing a soil sequence exposed at the flank of Mr. Kuju and a marine sequence drilled at the mouth of the Ono River, Kyushu, Japan.