14C Wiggle-Matching of the B-Tm Tephra, Baitoushan Volcano, China/North Korea

We performed accelerator mass spectrometry (AMS) radiocarbon dating and wiggle-matching of 2 wood samples from charred trunks of trees (samples A and B) collected from an ignimbrite deposit on the northeastern slope of the Baitoushan Volcano on the border of China and North Korea. The obtained calendar years for the eruption are cal AD 945?960 for sample A and cal AD 859?884 and cal AD 935?963 for sample B in the 2-? range. These results are unable to determine the precise eruption age. The reason for the difference in reported ages may be due to volcanic gas emission prior to the huge eruption.