The University of Arizona
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A 40,000-year varve chronology from Lake Suigetsu, Japan; extension of the (super 14) C calibration curve.

Hiroyuki Kitagawa, Johannes van der Plicht


A sequence of annually laminated sediments is a potential tool for calibrating the radiocarbon time scale beyond the range of the absolute tree-ring calibration (11 ka). We performed accelerator mass spectrometric (AMS) (super 14) C measurements on >250 terrestrial macrofossil samples from a 40,000-yr varve sequence from Lake Suigetsu, Japan. The results yield the first calibration curve for the total range of the (super 14) C dating method.


fossils;Lake Suigetsu;planar bedding structures;sedimentary structures;varves;cores;calibration;Far East;Japan;accelerator mass spectroscopy;mass spectroscopy;spectroscopy;Pleistocene;Asia;Cenozoic;Quaternary;C 14;carbon;dates;isotopes;radioactive isotopes;absolute age

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