Table 2. U/Pb data measured by sensitive high-resolution ion microprobe at the Australian National University.

Label	U	Th	Th/U	204Pb/206Pb	207Pb/206Pb	238U/206Pb	Ä206	Age
	(ppm)	(ppm)					(%)	(Ma)

DS25	31 18.03'	115 56.09'
Standard error in 11 standards was 0.64%.
1.1	2681	277	0.10	0.00008 ± 0.00002	0.0496 ± 0.0003	46.57 ± 0.52	0.11 ± 0.04	136.8 ± 1.5
1.2	4397	292	0.07	0.00005 ± 0.00001	0.0490 ± 0.0003	45.10 ± 0.51	0.01 ± 0.03	141.4 ± 1.6
1.3	572	644	1.13	0.00029 ± 0.00005	0.0677 ± 0.0007	12.44 ± 0.25	1.31 ± 0.09	492.0 ± 9.4 ¥
1.4	1730	170	0.10	0.00155 ± 0.00012	0.0716 ± 0.0014	46.54 ± 0.49	2.88 ± 0.17	133.1 ± 1.4
2.1	159	121	0.76	0.00044 ± 0.00008	0.0654 ± 0.0007	8.89 ± 0.10	0.38 ± 0.08	684.5 ± 7.4 ¥
3.1	157	111	0.71	0.00022 ± 0.00009	0.0660 ± 0.0007	8.47 ± 0.10	0.34 ± 0.09	717.1 ± 7.8 ¥
4.1	158	161	1.02	0.00001 ± 0.00006	0.0661 ± 0.0007	8.71 ± 0.14	0.42 ± 0.08	697.8 ± 10.7 ¥
5.1	122	45	0.37	0.00009 ± 0.00012	0.0624 ± 0.0012	10.98 ± 0.15	0.44 ± 0.14	559.3 ± 7.2 ¥
6.1	174	125	0.72	0.00023 ± 0.00011	0.0659 ± 0.0007	10.41 ± 0.12	0.78 ± 0.09	587.0 ± 6.3 ¥
7.1	174	163	0.94	0.00052 ± 0.00010	0.0662 ± 0.0006	8.31 ± 0.11	0.32 ± 0.07	730.2 ± 8.8 ¥
8.1	118	91	0.78	0.00035 ± 0.00011	0.0648 ± 0.0008	9.44 ± 0.15	0.44 ± 0.09	646.5 ± 9.6 ¥
9.1	219	114	0.52	0.00023 ± 0.00007	0.0649 ± 0.0005	9.80 ± 0.14	0.53 ± 0.07	623.4 ± 8.8 ¥
10.1	236	153	0.65	0.00011 ± 0.00005	0.0663 ± 0.0005	8.99 ± 0.19	0.52 ± 0.06	676.7 ± 13.4 ¥

DS58	31 14.34'	116 20.39'
Standard error in 13 standards was 0.33%.
1.1	521	238	0.46	0.00033 ± 0.00010	0.0497 ± 0.0005	50.84 ± 0.53	0.14 ± 0.06	125.4 ± 1.3
1.2	228	180	0.79	0.00050 ± 0.00026	0.0522 ± 0.0008	50.36 ± 0.69	0.46 ± 0.10	126.2 ± 1.7
2.1	104	88	0.85	0.00293 ± 0.00043	0.0687 ± 0.0028	49.82 ± 0.75	2.55 ± 0.36	124.9 ± 1.9
3.1	697	107	0.15	0.00003 ± 0.00001	0.0718 ± 0.0002	6.89 ± 0.09	0.44 ± 0.02	870.2 ± 10.4 ¥
3.2	211	134	0.64	0.00095 ± 0.00021	0.0527 ± 0.0008	49.28 ± 0.62	0.52 ± 0.09	128.8 ± 1.6
4.1	176	132	0.75	0.00126 ± 0.00028	0.0531 ± 0.0008	48.26 ± 0.54	0.56 ± 0.10	131.5 ± 1.5
5.1	83	82	0.99	0.00270 ± 0.00038	0.0693 ± 0.0052	50.35 ± 2.40	2.64 ± 0.65	123.5 ± 5.9
6.1	195	122	0.63	0.00119 ± 0.00025	0.0754 ± 0.0058	47.61 ± 0.81	3.37 ± 0.73	129.5 ± 2.4
7.1	417	221	0.53	0.00011 ± 0.00009	0.0482 ± 0.0010	49.30 ± 0.52	-0.05 ± -0.13	129.5 ± 1.4
8.1	251	260	1.04	0.00047 ± 0.00015	0.0495 ± 0.0006	49.70 ± 0.54	0.12 ± 0.08	128.3 ± 1.4
9.1	105	114	1.09	0.00141 ± 0.00042	0.0714 ± 0.0039	47.21 ± 0.75	2.87 ± 0.49	131.3 ± 2.2
10.1	152	134	0.89	0.00127 ± 0.00036	0.0551 ± 0.0009	48.19 ± 0.55	0.82 ± 0.12	131.3 ± 1.5

DS72	30 55.18'	116 22.11'
Standard error in 13 standards was 0.33%.
1.1	278	173	0.62	0.00007 ± 0.00013	0.0513 ± 0.0010	46.43 ± 1.04	0.31 ± 0.13	136.9 ± 3.0
1.2	245	167	0.68	0.00013 ± 0.00003	0.0666 ± 0.0003	7.69 ± 0.08	0.14 ± 0.04	787.0 ± 7.6 ¥
1.3	127	92	0.73	0.00024 ± 0.00007	0.0663 ± 0.0008	8.20 ± 0.32	0.29 ± 0.09	739.9 ± 27.5 ¥
1.4	166	100	0.60	0.00215 ± 0.00048	0.0613 ± 0.0049	44.25 ± 2.96	1.58 ± 0.62	141.8 ± 9.4
2.1	163	202	1.24	0.00063 ± 0.00025	0.0581 ± 0.0009	47.41 ± 0.53	1.18 ± 0.11	133.0 ± 1.5
3.1	211	407	1.92	0.00052 ± 0.00019	0.0590 ± 0.0008	49.13 ± 0.62	1.31 ± 0.10	128.2 ± 1.6
4.1	126	139	1.10	0.00071 ± 0.00024	0.0549 ± 0.0009	49.34 ± 0.57	0.80 ± 0.12	128.3 ± 1.5
5.1	126	191	1.51	0.00117 ± 0.00030	0.0616 ± 0.0018	47.45 ± 0.65	1.64 ± 0.23	132.3 ± 1.8
6.1	453	98	0.22	0.00007 ± 0.00003	0.0631 ± 0.0003	14.79 ± 0.27	0.98 ± 0.04	417.7 ± 7.5 ¥
6.2	181	99	0.55	0.00018 ± 0.00004	0.0683 ± 0.0007	7.72 ± 0.09	0.37 ± 0.08	782.3 ± 8.5 ¥
7.1	181	252	1.39	0.00046 ± 0.00018	0.0519 ± 0.0008	48.57 ± 0.54	0.41 ± 0.10	130.9 ± 1.5
8.1	138	161	1.17	-0.00025 ± 0.00028	0.0534 ± 0.0009	48.57 ± 0.56	0.60 ± 0.12	130.6 ± 1.5
8.2	145	184	1.27	0.00140 ± 0.00034	0.0546 ± 0.0009	46.94 ± 0.54	0.74 ± 0.12	134.9 ± 1.5
9.1	135	112	0.83	0.00185 ± 0.00036	0.0646 ± 0.0022	46.68 ± 0.54	2.01 ± 0.28	133.9 ± 1.6
10.1	287	646	2.25	0.00043 ± 0.00023	0.0511 ± 0.0015	48.19 ± 0.58	0.31 ± 0.19	132.0 ± 1.6
11.1	153	150	0.98	0.00045 ± 0.00036	0.0537 ± 0.0008	47.76 ± 0.64	0.63 ± 0.10	132.7 ± 1.8
12.1	64	101	1.58	0.00064 ± 0.00055	0.0623 ± 0.0015	47.21 ± 0.61	1.71 ± 0.19	132.8 ± 1.7

DS81	30 49.23'	116 04.42'
Standard error in 11 standards was 0.64%.
1.1	34	44	1.29	0.00219 ± 0.00122	0.0704 ± 0.0035	48.21 ± 1.07	2.75 ± 0.44	128.7 ± 2.9
2.1	127	250	1.97	0.00050 ± 0.00042	0.0551 ± 0.0015	46.94 ± 0.68	0.80 ± 0.19	134.8 ± 1.9
3.1	46	55	1.19	0.00203 ± 0.00108	0.0699 ± 0.0046	46.74 ± 1.49	2.66 ± 0.58	132.9 ± 4.3
4.1	103	140	1.36	0.00134 ± 0.00059	0.0530 ± 0.0028	47.27 ± 0.72	0.54 ± 0.35	134.2 ± 2.1
5.1	41	41	0.99	0.00224 ± 0.00096	0.0755 ± 0.0030	46.70 ± 0.92	3.38 ± 0.38	132.0 ± 2.6
6.1	49	68	1.37	0.00473 ± 0.00158	0.0604 ± 0.0025	46.34 ± 0.87	1.47 ± 0.31	135.6 ± 2.5
7.1	119	181	1.52	0.00119 ± 0.00034	0.0533 ± 0.0014	46.21 ± 0.66	0.57 ± 0.18	137.2 ± 2.0
8.1	105	163	1.55	0.00134 ± 0.00044	0.0539 ± 0.0015	43.38 ± 0.64	0.62 ± 0.19	146.0 ± 2.1 ¥
9.1	47	52	1.12	0.00283 ± 0.00147	0.0479 ± 0.0023	46.92 ± 0.87	-0.12 ± 0.29	136.1 ± 2.5
10.1	88	119	1.34	0.00424 ± 0.00088	0.0969 ± 0.0059	45.86 ± 1.43	6.08 ± 0.74	130.7 ± 4.2
DS107 	30 32.48'	116 17.01'
1.1	1352	22	0.02	0.00044 ± 0.00020	0.0605 ± 0.0008	25.73 ± 0.40	1.18 ± 0.10	242.9 ± 3.7
1.2	53	56	1.07	0.00001 ± 0.00069	0.0816 ± 0.0021	7.86 ± 0.17	2.01 ± 0.26	757.3 ± 15.6 ¥
2.1	1645	22	0.01	0.00001 ± 0.00013	0.0523 ± 0.0005	29.05 ± 0.36	0.22 ± 0.07	217.7 ± 2.7
3.1	1135	17	0.02	0.00051 ± 0.00024	0.0617 ± 0.0012	26.31 ± 0.31	1.33 ± 0.16	237.3 ± 2.7
4.1	283	98	0.35	0.00001 ± 0.00016	0.0703 ± 0.0016	9.28 ± 0.13	1.07 ± 0.20	653.2 ± 8.5 ¥
4.2	1018	19	0.02	0.00202 ± 0.00067	0.0935 ± 0.0017	25.58 ± 0.30	5.30 ± 0.21	234.3 ± 2.8
5.1	1086	12	0.01	0.00027 ± 0.00028	0.0536 ± 0.0011	27.99 ± 0.34	0.36 ± 0.14	225.5 ± 2.7
6.1	1283	28	0.02	0.00001 ± 0.00015	0.0511 ± 0.0011	27.32 ± 0.32	0.04 ± 0.14	231.6 ± 2.7
6.2	153	81	0.53	0.00001 ± 0.00037	0.0737 ± 0.0014	11.42 ± 0.20	1.89 ± 0.18	531.3 ± 8.8 ¥
6.3	1090	11	0.01	0.00001 ± 0.00021	0.0579 ± 0.0007	27.43 ± 0.31	0.89 ± 0.08	228.8 ± 2.6
7.1	50	33	0.67	0.00001 ± 0.00138	0.0777 ± 0.0038	9.58 ± 0.22	2.03 ± 0.46	627.6 ± 14.1 ¥
8.1	1093	14	0.01	0.00070 ± 0.00039	0.0666 ± 0.0009	26.72 ± 0.30	1.96 ± 0.11	232.3 ± 2.6
9.1	104	153	1.47	0.00062 ± 0.00078	0.0742 ± 0.0019	7.00 ± 0.15	0.78 ± 0.23	854.7 ± 17.0 ¥
10.1	1051	19	0.02	0.00015 ± 0.00017	0.0549 ± 0.0012	27.02 ± 0.33	0.51 ± 0.15	233.1 ± 2.9
11.1	1706	41	0.02	0.00022 ± 0.00019	0.0588 ± 0.0009	25.89 ± 0.31	0.97 ± 0.11	242.0 ± 2.9
12.1	1109	12	0.01	0.00026 ± 0.00021	0.0537 ± 0.0013	26.72 ± 0.33	0.35 ± 0.16	236.0 ± 2.9
13.1	1240	28	0.02	0.00159 ± 0.00049	0.0720 ± 0.0008	29.59 ± 0.35	2.70 ± 0.10	208.5 ± 2.4
14.1	1259	15	0.01	0.00001 ± 0.00031	0.0529 ± 0.0010	26.33 ± 0.34	0.24 ± 0.12	239.8 ± 3.0
15.1	1070	17	0.02	0.00001 ± 0.00013	0.0538 ± 0.0012	26.32 ± 0.36	0.35 ± 0.16	239.5 ± 3.2
16.1	1243	14	0.01	0.00129 ± 0.00044	0.0769 ± 0.0010	28.13 ± 0.35	3.29 ± 0.13	217.9 ± 2.7
17.1	460	197	0.43	0.00018 ± 0.00040	0.0582 ± 0.0012	16.35 ± 0.21	0.48 ± 0.14	380.9 ± 4.8 ¥
18.1	196	254	1.29	0.00001 ± 0.00031	0.0686 ± 0.0010	8.36 ± 0.14	0.60 ± 0.12	724.3 ± 11.1 ¥
19.1	165	105	0.63	0.00036 ± 0.00027	0.0731 ± 0.0011	7.58 ± 0.12	0.89 ± 0.14	792.4 ± 12.0 ¥
20.1	165	199	1.20	0.00000 ± 0.00021	0.0696 ± 0.0021	8.92 ± 0.16	0.89 ± 0.26	678.8 ± 11.5 ¥
21.1	258	332	1.29	0.00020 ± 0.00017	0.0679 ± 0.0009	7.72 ± 0.11	0.31 ± 0.10	782.9 ± 11.0 ¥

DS150	30 53.98'	115 45.15'
Standard error in 13 standards was 0.33%.
1.1	250	82	0.33	0.00058 ± 0.00015	0.0527 ± 0.0007	47.30 ± 0.51	0.50 ± 0.08	134.2 ± 1.5
1.2	453	162	0.36	0.00038 ± 0.00011	0.0508 ± 0.0005	47.70 ± 0.50	0.26 ± 0.06	133.4 ± 1.4
1.3	519	245	0.47	0.00039 ± 0.00008	0.0515 ± 0.0005	47.31 ± 0.52	0.35 ± 0.06	134.4 ± 1.5
2.1	220	70	0.32	0.00092 ± 0.00025	0.0533 ± 0.0007	47.96 ± 0.53	0.59 ± 0.09	132.3 ± 1.5
2.2	132	20	0.15	0.00058 ± 0.00040	0.0607 ± 0.0026	48.79 ± 1.92	1.52 ± 0.33	128.8 ± 5.0
3.1	265	163	0.61	0.00054 ± 0.00021	0.0541 ± 0.0007	47.91 ± 0.52	0.69 ± 0.08	132.3 ± 1.4
3.2	122	63	0.52	0.00142 ± 0.00037	0.0569 ± 0.0010	47.97 ± 0.56	1.04 ± 0.13	131.6 ± 1.5

DS158	30 45.25'	115 44.57'
Standard error in 13 standards was 0.33%.
1.1	66	2.0	0.03	0.00124 ± 0.00038	0.0589 ± 0.0027	26.63 ± 0.50	1.01 ± 0.33	235.3 ± 4.4
2.1	274	4.7	0.02	0.00004 ± 0.00011	0.0520 ± 0.0005	27.53 ± 0.37	0.16 ± 0.07	229.7 ± 3.0
3.1	110	2.9	0.03	0.00053 ± 0.00040	0.0558 ± 0.0008	28.21 ± 0.39	0.66 ± 0.10	223.1 ± 3.0
4.1	81	2.3	0.03	0.00078 ± 0.00044	0.0578 ± 0.0010	28.79 ± 0.34	0.91 ± 0.12	218.1 ± 2.5
5.1	65	2.3	0.04	0.00213 ± 0.00056	0.0687 ± 0.0037	22.34 ± 1.52	2.12 ± 0.46	276.4 ± 18.5
6.1	93	2.3	0.03	0.00085 ± 0.00025	0.0589 ± 0.0017	25.21 ± 0.71	0.97 ± 0.22	248.3 ± 6.8
6.2	143	182.3	1.27	0.00033 ± 0.00008	0.0647 ± 0.0005	12.17 ± 0.14	0.90 ± 0.06	504.7 ± 5.4 ¥
7.1	63	1.7	0.03	0.00254 ± 0.00033	0.0871 ± 0.0057	29.00 ± 0.41	4.61 ± 0.71	208.7 ± 3.3
7.2	104	9.3	0.09	0.00102 ± 0.00023	0.0678 ± 0.0016	27.22 ± 0.31	2.14 ± 0.20	227.7 ± 2.6
8.1	73	2.3	0.03	0.00129 ± 0.00023	0.0596 ± 0.0010	28.55 ± 0.33	1.15 ± 0.12	219.4 ± 2.5
8.2	159	6.2	0.04	0.00124 ± 0.00029	0.0586 ± 0.0021	26.87 ± 0.35	0.98 ± 0.26	233.3 ± 3.1

DS163	30 46.75'	115 25.45'
Standard error in 11 standards was 0.64%.
1.1	358	485	1.36	0.00011 ± 0.00003	0.0667 ± 0.0005	8.01 ± 0.17	0.26 ± 0.06	756.3 ± 15.2 ¥
2.1	76	92	1.21	0.00001 ± 0.00017	0.0678 ± 0.0012	7.88 ± 0.18	0.37 ± 0.14	767.2 ± 16.3 ¥
3.1	444	232	0.52	0.00011 ± 0.00003	0.0673 ± 0.0005	8.11 ± 0.17	0.38 ± 0.06	747.2 ± 14.4 ¥
4.1	233	84	0.36	0.00029 ± 0.00012	0.0687 ± 0.0029	19.63 ± 0.47	1.93 ± 0.36	314.3 ± 7.4 ¥
5.1	83	108	1.30	0.00004 ± 0.00010	0.0663 ± 0.0007	8.14 ± 0.19	0.26 ± 0.09	745.2 ± 16.1 ¥
6.1	330	154	0.47	-0.00002 ± 0.00002	0.0664 ± 0.0003	7.50 ± 0.17	0.05 ± 0.04	806.5 ± 17.0 ¥
6.1A	683	120	0.18	0.00013 ± 0.00002	0.0664 ± 0.0003	8.64 ± 0.15	0.44 ± 0.04	703.3 ± 11.3 ¥
6.2A	1328	51	0.04	0.00010 ± 0.00004	0.0501 ± 0.0004	48.51 ± 0.60	0.17 ± 0.05	131.3 ± 1.6
6.3A	1183	45	0.04	0.00021 ± 0.00005	0.0502 ± 0.0005	50.11 ± 0.59	0.20 ± 0.06	127.1 ± 1.5
7.1	1858	675	0.36	0.00002 ± 0.00002	0.0732 ± 0.0030	16.22 ± 0.67	2.33 ± 0.38	377.0 ± 15.1 ¥
8.1	755	25	0.03	0.00002 ± 0.00004	0.0518 ± 0.0005	49.09 ± 1.00	0.39 ± 0.07	129.5 ± 2.6
8.1A	1394	107	0.08	0.00019 ± 0.00007	0.0562 ± 0.0004	32.67 ± 0.37	0.78 ± 0.05	192.9 ± 2.2 ¥
9.1	493	195	0.40	-0.00000 ± 0.00002	0.0658 ± 0.0003	8.97 ± 0.20	0.44 ± 0.04	678.3 ± 14.1 ¥
9.2	2284	1319	0.58	0.00015 ± 0.00002	0.0654 ± 0.0002	13.38 ± 0.22	1.13 ± 0.03	459.5 ± 7.3 ¥
10.1	640	352	0.55	0.00009 ± 0.00002	0.0651 ± 0.0003	10.12 ± 0.16	0.62 ± 0.04	604.1 ± 8.9 ¥
11.1	67	54	0.80	0.00042 ± 0.00015	0.0692 ± 0.0009	7.98 ± 0.12	0.59 ± 0.11	757.2 ± 10.6 ¥
12.1	2184	605	0.28	0.00001 ± 0.00001	0.0642 ± 0.0002	9.71 ± 0.12	0.43 ± 0.02	629.1 ± 7.4 ¥

Number before decimal identifies a specific grain;  number after decimal identifies specific analysis within that grain.  
204Pb/206Pb, 207Pb/206Pb, 238U/206Pb ratios are as measured (i.e., no common Pb correction)
Ä206 is the percentage of common Pb as estimated from the difference between the measured 207Pb/206Pb ratio and the extrapolated concordant age (207Pb method).
Age: 206/238 age corrected for common Pb as given by Ä206.
¥ inheritance components
All errors ± 1s.