Spot	 
%
206Pbc	ppm
U	ppm
Th	232Th
/238U	%
Dis-
cor-
dant	4corr
207r
/206r	err	4corr
207r
/235	err	4corr
206r
/238	err	err
corr	(1)
206Pb
/238U
Age	(1)
207Pb
/206Pb
Age	
516-37	7.29	32	30	0.97	-74 	.0657	.0203	2.17	0.68	.2398	.0104	.140	1385	54	798	646	
516-50	5.35	129	50	0.40	-22 	.0834	.0222	3.15	0.85	.2739	.0130	.175	1561	66	1278	519	
516-74	0.24	405	228	0.58	0 	.0900	.0013	3.05	0.12	.2460	.0088	.932	1418	45	1425	27	
516-21	1.52	145	32	0.23	-1 	.0954	.0036	3.58	0.19	.2723	.0100	.697	1553	51	1535	71	
516-65	0.25	142	113	0.82	6 	.0971	.0019	3.46	0.14	.2585	.0094	.884	1482	48	1570	36	
516-22	13.45	40	27	0.71	-12 	.0975	.0734	4.22	3.19	.3142	.0208	.087	1761	102	1577	1410	
516-1	0.65	368	240	0.67	18 	.0976	.0026	2.99	0.13	.2220	.0079	.798	1292	42	1579	50	
516-35	2.39	44	49	1.16	9 	.0985	.0150	3.42	0.54	.2520	.0105	.265	1449	54	1595	284	
516-57	0.67	1069	2234	2.16	34 	.0999	.0064	2.47	0.19	.1793	.0073	.536	1063	40	1622	119	
516-19	0.07	2222	271	0.13	10 	.1012	.0004	3.59	0.13	.2570	.0089	.994	1474	46	1646	7	
516-59	1.06	89	74	0.86	-6 	.1017	.0041	4.40	0.24	.3136	.0119	.689	1758	58	1655	74	
516-28	2.06	139	46	0.34	3 	.1033	.0046	4.13	0.24	.2897	.0107	.634	1640	53	1685	83	
516-13	1.02	313	86	0.28	-5 	.1038	.0015	4.55	0.17	.3183	.0113	.925	1782	55	1692	27	
516-14	1.02	313	86	0.28	-5 	.1038	.0015	4.55	0.17	.3183	.0113	.925	1782	55	1692	27	
516-47	0.33	373	103	0.29	5 	.1051	.0020	4.17	0.17	.2877	.0102	.882	1630	51	1716	35	
516-49	1.34	871	189	0.22	26 	.1054	.0042	3.15	0.17	.2169	.0080	.679	1265	42	1721	73	
516-17	7.55	30	19	0.67	15 	.1056	.0359	3.74	1.28	.2567	.0128	.145	1473	66	1725	624	
516-51	1.03	118	50	0.44	-6 	.1057	.0039	4.80	0.25	.3295	.0124	.716	1836	60	1726	67	
516-6	1.83	326	156	0.49	10 	.1062	.0079	4.02	0.33	.2744	.0099	.436	1563	50	1734	137	
516-53	0.83	170	39	0.24	-6 	.1063	.0021	4.85	0.20	.3308	.0119	.877	1842	58	1736	36	
516-15	0.19	725	173	0.25	1 	.1063	.0008	4.49	0.16	.3063	.0107	.976	1722	53	1737	14	
516-44	0.39	882	241	0.28	0 	.1067	.0014	4.58	0.17	.3111	.0109	.939	1746	53	1744	24	
516-10	0.51	150	45	0.31	-1 	.1068	.0019	4.62	0.19	.3136	.0113	.900	1759	56	1746	32	
																	
 Spot	 
%
206Pbc	ppm
U	ppm
Th	232Th
/238U	%
Dis-
cor-
dant	4corr
207r
/206r	err	4corr
207r
/235	err	4corr
206r
/238	err	err
corr	(1)
206Pb
/238U
Age	(1)
207Pb
/206Pb
Age	
516-24	0.95	199	81	0.42	0 	.1069	.0025	4.57	0.20	.3099	.0111	.836	1740	55	1747	43	
516-12	0.67	146	62	0.44	-3 	.1070	.0030	4.77	0.22	.3237	.0117	.795	1808	57	1748	51	
516-26	4.25	129	34	0.27	-1 	.1071	.0122	4.67	0.56	.3167	.0118	.312	1774	58	1750	209	
516-7	1.20	110	39	0.36	5 	.1075	.0042	4.41	0.24	.2972	.0111	.693	1678	55	1758	71	
516-42	0.43	219	86	0.41	0 	.1076	.0020	4.67	0.19	.3149	.0112	.885	1765	55	1759	34	
516-16	0.48	126	63	0.52	-2 	.1079	.0027	4.76	0.21	.3203	.0117	.821	1791	57	1764	46	
516-3	0.73	72	24	0.35	1 	.1081	.0027	4.66	0.21	.3125	.0117	.835	1753	58	1767	45	
516-4	0.31	210	119	0.58	3 	.1081	.0022	4.52	0.19	.3036	.0109	.864	1709	54	1767	38	
516-75	0.14	240	115	0.50	-1 	.1082	.0011	4.74	0.18	.3180	.0113	.961	1780	55	1769	19	
516-39	0.28	422	122	0.30	1 	.1082	.0010	4.67	0.17	.3130	.0110	.969	1755	54	1769	16	
516-34	0.17	313	75	0.25	6 	.1082	.0009	4.38	0.16	.2936	.0104	.972	1660	52	1770	16	
516-71	0.45	240	138	0.60	3 	.1083	.0017	4.54	0.18	.3042	.0108	.913	1712	54	1771	29	
516-60	0.22	226	154	0.71	3 	.1084	.0015	4.57	0.18	.3056	.0110	.930	1719	54	1773	26	
516-33	0.80	224	211	0.97	5 	.1087	.0040	4.49	0.23	.2996	.0108	.700	1690	53	1779	67	
516-36	0.17	538	610	1.17	1 	.1088	.0007	4.74	0.17	.3157	.0111	.982	1769	54	1780	12	
516-64	0.07	499	302	0.63	0 	.1089	.0007	4.79	0.17	.3189	.0113	.982	1784	55	1781	12	
516-27	0.29	812	1017	1.29	9 	.1090	.0010	4.31	0.16	.2870	.0101	.966	1627	50	1783	17	
516-70	0.13	294	103	0.36	-3 	.1090	.0011	4.95	0.18	.3293	.0117	.964	1835	57	1783	18	
516-11	0.06	1037	1025	1.02	2 	.1092	.0007	4.67	0.17	.3103	.0108	.984	1742	53	1785	11	
516-63	0.48	94	25	0.27	1 	.1092	.0024	4.76	0.20	.3159	.0117	.864	1770	58	1787	39	
516-72	0.43	141	38	0.28	2 	.1093	.0020	4.73	0.19	.3138	.0114	.897	1759	56	1787	33	
516-31	0.29	543	527	1.00	4 	.1093	.0012	4.61	0.17	.3058	.0107	.953	1720	53	1788	20	
516-9	0.07	924	428	0.48	-6 	.1093	.0006	5.15	0.18	.3416	.0120	.987	1894	57	1788	10	
																	
 Spot	 
%
206Pbc	ppm
U	ppm
Th	232Th
/238U	%
Dis-
cor-
dant	4corr
207r
/206r	err	4corr
207r
/235	err	4corr
206r
/238	err	err
corr	(1)
206Pb
/238U
Age	(1)
207Pb
/206Pb
Age	
516-73	0.62	83	25	0.31	1 	.1094	.0032	4.79	0.23	.3172	.0118	.783	1776	58	1790	54	
516-68	0.15	309	152	0.51	0 	.1096	.0010	4.86	0.18	.3218	.0114	.968	1799	56	1792	17	
516-43	0.13	474	242	0.53	-3 	.1096	.0013	5.00	0.19	.3307	.0116	.951	1842	56	1793	21	
516-2	0.30	455	460	1.05	4 	.1097	.0011	4.61	0.17	.3049	.0107	.958	1715	53	1794	19	
516-38	1.11	98	42	0.45	1 	.1098	.0039	4.79	0.25	.3161	.0117	.719	1771	57	1797	65	
516-52	2.09	34	9	0.27	1 	.1098	.0097	4.80	0.47	.3171	.0130	.423	1775	64	1797	160	
516-40	0.25	1098	638	0.60	12 	.1099	.0011	4.23	0.15	.2788	.0098	.963	1586	49	1798	18	
516-18	0.52	283	139	0.51	3 	.1100	.0020	4.70	0.19	.3100	.0110	.891	1741	54	1799	33	
516-69	0.11	418	371	0.92	3 	.1102	.0008	4.73	0.17	.3112	.0109	.980	1747	54	1802	13	
516-67	0.21	272	100	0.38	2 	.1102	.0011	4.77	0.18	.3137	.0111	.961	1759	55	1803	19	
516-61	0.13	242	131	0.56	2 	.1103	.0011	4.82	0.18	.3166	.0113	.960	1773	55	1805	19	
516-62	0.33	126	58	0.48	-2 	.1105	.0017	5.06	0.20	.3322	.0121	.921	1849	58	1807	28	
516-20	0.70	80	33	0.43	-2 	.1107	.0027	5.05	0.23	.3310	.0124	.839	1843	60	1811	44	
516-45	1.77	203	87	0.44	14 	.1108	.0056	4.20	0.26	.2747	.0104	.603	1564	53	1812	91	
516-5	2.11	237	52	0.23	18 	.1112	.0077	3.99	0.31	.2600	.0095	.467	1490	49	1818	125	
516-30	0.55	239	98	0.42	6 	.1115	.0021	4.68	0.19	.3042	.0109	.881	1712	54	1824	35	
516-58	0.25	236	128	0.56	9 	.1121	.0023	4.58	0.19	.2964	.0108	.867	1674	54	1834	38	
516-29	0.28	172	32	0.19	7 	.1134	.0015	4.77	0.18	.3051	.0110	.935	1717	54	1854	25	
516-41	0.53	92	62	0.69	6 	.1134	.0026	4.87	0.21	.3113	.0115	.847	1747	57	1855	42	
516-54	1.29	70	34	0.51	4 	.1136	.0038	5.00	0.25	.3192	.0121	.745	1786	59	1858	61	
516-8	0.02	233	123	0.55	5 	.1137	.0012	4.92	0.18	.3138	.0113	.961	1759	55	1859	19	
516-32	4.29	29	18	0.63	9 	.1144	.0222	4.78	0.96	.3032	.0142	.234	1707	70	1870	351	
516-23	1.17	87	38	0.45	5 	.1148	.0077	5.02	0.39	.3169	.0119	.488	1775	58	1877	121	
																	
 Spot	 
%
206Pbc	ppm
U	ppm
Th	232Th
/238U	%
Dis-
cor-
dant	4corr
207r
/206r	err	4corr
207r
/235	err	4corr
206r
/238	err	err
corr	(1)
206Pb
/238U
Age	(1)
207Pb
/206Pb
Age	
516-25	2.10	60	16	0.28	11 	.1162	.0100	4.83	0.46	.3014	.0119	.419	1698	59	1899	154	
516-56	2.01	306	93	0.31	27 	.1216	.0119	4.24	0.45	.2530	.0095	.358	1454	49	1980	175	
516-55	1.54	249	58	0.24	36 	.1221	.0092	3.66	0.31	.2177	.0084	.453	1270	44	1987	135	
516-14	6.69	11	5	0.47	7 	.1242	.0214	5.77	1.04	.3366	.0184	.302	1870	89	2018	306	
516-46	10.46	78	33	0.44	37 	.1327	.0342	4.21	1.11	.2302	.0135	.222	1336	71	2133	451	
516-66	0.18	82	39	0.49	0 	.1853	.0021	13.24	0.51	.5180	.0192	.955	2691	82	2701	19	
516-48	2.11	292	128	0.45	30 	.1922	.0056	9.25	0.45	.3490	.0137	.804	1930	66	2761	48	
516-5A	5.17	52	31	0.62	-15 	.1032	.0170	4.96	0.84	.3486	.0136	.230	1928	65	1682	304	
516-6A	6.72	35	21	0.61	-31 	.0756	.0145	2.56	0.50	.2460	.0096	.200	1418	50	1083	384	
516-4A	1.74	97	31	0.33	-6 	.1034	.0060	4.56	0.30	.3202	.0096	.458	1791	47	1685	108	
516-4B	12.48	24	8	0.34	10 	.1025	.0302	3.69	1.10	.2614	.0126	.161	1497	64	1669	544	
516-3A	4.50	104	52	0.51	-4 	.1094	.0085	5.06	0.42	.3356	.0105	.375	1865	51	1789	141	
516-3B	0.46	362	361	1.03	-2 	.1784	.0015	12.80	0.36	.5204	.0140	.955	2701	59	2638	14	
516-3C	2.80	97	143	1.53	-9 	.1069	.0065	5.05	0.34	.3424	.0104	.448	1898	50	1747	111	
516-1A	1.88	115	28	0.26	3 	.1077	.0070	4.50	0.32	.3033	.0092	.424	1708	45	1761	118	
516-2A	13.08	15	22	1.45	12 	.1091	.0292	4.14	1.14	.2753	.0166	.219	1568	84	1784	488	
516-66A	7.21	17	89	5.31	-1 	.1914	.0251	14.30	2.02	.5419	.0286	.374	2791	120	2754	216	

Errors are 1-sigma; Pbc and Pb* indicate the common and radiogenic portions, respectively.
Error in Standard calibration was 1.5%
(1) Common Pb corrected using measured 204Pb.