Time of a Near Holocene Volcanic Eruption in the Tatun Volcano Group, Northern Taiwan: Evidence from AMS Radiocarbon Dating of Charcoal Ash from Sediments of the Sungshan Formation in Taipei Basin

Using the charcoal ash in the Kuandu well of the Taipei Basin sediments as dating material, we obtain an AMS radiocarbon result with a 14C age of 16950 + - 150 yrBP (calendar age of 19814 - 20431 yrBP). Regarding the charcoal ash as a likely remnant of a forest fire caused by volcanic eruptions, this result confirms our earlier report that there was a volcanic event around 20 Ka in the Tatun Volcano Group.