Uplift rate of Kitadaito Jima Island on the lithospheric forebulge of the Philippine Sea Plate

Progress in Earth and Planetary Science

Table 1 Sr isotope ratios and resultant calibrated ages of samples from the Lighthouse Outcrop

Sample no.	Subsample ID	⁸⁷Sr/⁸⁶Sr	Error (2SE)	Calibrated ⁸⁷Sr/⁸⁶Sr	Age (Ma)	95% Confidence limit (Ma)
K1	K1-1-1	0.7090970	0.0000066	0.7090910	1.823	± 0.133
	K1-1-2	0.7090962	0.0000074	0.7090902	1.880	± 0.131
	K1-2-1	0.7090969	0.0000068	0.7090909	1.860	± 0.130
	K1-2-2	0.7090955	0.0000064	0.7090895	1.903	± 0.131
	K1-3	0.7090919	0.0000084	0.7090859	2.014	± 0.122
	K1-4	0.7090935	0.0000066	0.7090875	1.965	± 0.126
	K1-5	0.7090992	0.0000074	0.7090932	1.779	± 0.135
K3	K3-1-1	0.7090693	0.0000074	0.7090633	2.822	± 0.178
	K3-1-2	0.7090691	0.0000072	0.7090631	2.835	± 0.174
	K3-2	0.7090799	0.0000062	0.7090739	2.362	± 0.125
	K3-3	0.7090732	0.0000062	0.7090672	2.604	± 0.145
	K3-4	0.7090696	0.0000062	0.7090636	2.801	± 0.174
	K3-5	0.7090651	0.0000070	0.7090591	3.138	± 0.264
	K3-6	0.7090732	0.0000066	0.7090672	2.606	± 0.145

Ages and confidence limits are based on the calibration curve of McArthur et al. (2020)