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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: (U–Th)/He thermochronometric mapping across the northeast Japan Arc: towards understanding mountain building in an island-arc setting

Fig. 2

Effective uranium (eU) ppm versus AHe grain ages (with errors indicated by ± 3σ). Two horizontal green lines show the upper and lower limits of the weighted mean ages, namely the + 95% and − 95% confidence intervals. No green lines imply that the weighted mean age was not considered meaningful because of poor reproducibility

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