Progress in Earth and Planetary Science

Table 1 List of compiled chronological data counts by method

From: Clockwise rotation of SW Japan and timing of Izanagi–Pacific ridge subduction revealed by arc migration

Measuring target	Number
Measuring target	SW Japan	NE Japan*	Total
Crystallization age
U–Pb ages
Zircon	275	76	351
U–Th–total Pb ages
Thorite	116	38	154
Uraninite	145	47	192
Cooling age
K–Ar ages
Biotite	217	42	259
Hornblende	105	35	140
K-feldspar	18	6	24
Muscovite	4	0	4
Plagioclase	5	0	5
Whole rock	66	19	85
Ar–Ar ages
Biotite	4	1	5
Hornblende	0	3	3
Plagioclase	0	1	1
Whole rock	4	0	4
Total		959	268

*Age datum from the Oga peninsula is tallied in NE Japan

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