Table 2. Isotope and U-series data.

Volcano	Yasur	Hunga	Hunga	Home Reef	Fonualei	Havre	Terceira	Eyjafjallajökull
Province	Vanuatu	Tonga	Tonga	Tonga	Tonga	Kermadec	Azores	Iceland
Sample	Van A1	HH09-01	HH09-02	HR06	F0805	PC	Serreta	EJ-1
Month-yr	08–2008	04–2009	04–2009	11–2006	1979–90a	07–2012	02–1996	04–2010
87Sr/86Sr	0.703540	0.703951	0.703688	0.703636	0.703769	0.703705	0.703533	0.703257
±2σ	0.0000072	0.0000062	0.0000096	0.0000064	0.0000063	0.0000062	0.0000075	0.0000068
143Nd/144Nd	0.513030	0.513028	0.513026	0.512987	0.512948	0.513115	0.512925	0.513004
±2σ	0.0000038	0.0000048	0.0000038	0.0000012	0.0000025	0.0000035	0.0000036	0.0000042
226Ra fg/g	505.3	115.7	115.9	185.8	236.0	326.7	452.3	654.1
±2σ	13.1	2.9	2.9	5.0	6.2	8.3	12.6	16.4
(210Pb) dpm/g	1.122*	0.264*	0.262	0.457	0.510	0.695	0.796	1.435
±2σ	0.022	0.010	0.018	0.030	0.019	0.026	0.026	0.038
(234U/238U)	0.995	0.999	0.991	0.996	1.016	1.005	1.006	1.005
±2σ	0.005	0.006	0.005	0.006	0.005	0.005	0.005	0.005
(238U/232Th)	1.754	3.128	2.991	2.610	2.551	0.996	1.174	1.007
±2σ	0.030	0.053	0.051	0.044	0.044	0.017	0.020	0.017
(230Th/232Th)	1.459	1.679	1.700	1.611	1.656	0.930	1.399	1.092
±2σ	0.015	0.040	0.050	0.023	0.017	0.009	0.014	0.011
(230Th/238U)	0.831	0.539	0.568	0.617	0.649	0.934	1.192	1.085
±2σ	0.015	0.014	0.018	0.010	0.010	0.016	0.020	0.019
(226Ra/230Th)	1.703	4.796	4.316	4.392	2.911	1.377	1.374	1.066
±2σ	0.049	0.134	0.120	0.129	0.084	0.038	0.042	0.030
(210Pb/226Ra)	1.012	1.040	1.022	1.121	0.985	0.970	0.802	1.000
(210Pb/226Ra)0	1.012	1.040	1.025	1.144	0.966	0.968	0.711	1.000
±2σ	0.033	0.047	0.080	0.097	0.119	0.047	0.055	0.038

^aFor the calculation of (²¹⁰Pb/²²⁶Ra)₀ for sample F0805 we adopted an age of 1/1985.

^*Value determined by regression through multiple (²¹⁰Po) analyses (see Supplementary Table 1).