Figure 3
From: Magmatic history of the Oldest Toba Tuff inferred from zircon U–Pb geochronology
238U–206Pb age distributions for OTT zircons younger than 5 Ma. Individual grain ages with 2σ uncertainty are arranged from young to old. Bars in grey represent statistical outliers and were excluded. Black and red horizontal bars represent mean U–Pb ages and reported 40Ar/39Ar eruption ages (see text), respectively. (a) rim (< 8 μm in depth), (b) shallow (~ 9–18 μm in depth), (c) deep (~ 18–27 μm in depth). MSWD, mean square weighted deviation.
