Table 2 K-Ar age data of hornblende and plagioclase separated from the granodiorite sample (Fig. 4d).

From: Kibi Plateau: A stable-coherent tectonic unit in the active Japanese Islands

MineralK content (wt.%)Rad40Ar (10−8cc STP/g)K-Ar age (Ma)Non-rad40Ar (%)
Hornblende0.471 ± 0.009165.4 ± 1.888.3 ± 2.08.7
Plagioclase1.088 ± 0.022374.1 ± 4.286.5 ± 1.910.8