AMS ¹⁴C Dating of Varved Sediments from Lake Suigetsu, Central Japan and Atmospheric ¹⁴C Change During the Late Pleistocene

We made accelerator mass spectrometry (AMS) ¹⁴C measurements on terrestrial macrofossils from the Late Pleistocene/Holocene of the annually laminated sediments of Lake Suigetsu (central Japan). The AMS ¹⁴C dates of terrestrial macrofossils showed agreement between varve counting years and calibrated ages (tree rings and U/Th on coral) in the interval of 10.5 and ca. 11.5 ka cal BP. Beyond 11.5 ka cal BP, the age difference between ¹⁴C and varve counting years gradually diminish, contradicting published data on corals dated by U/Th and ¹⁴C.

[Radiocarbon Volume 37, Number 2, 1995]