"Table 3. SHRIMP U-Pb zircon data for sample HM1906, 206/8-8, 2104.75 m, Unit IIIc",,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,, Total Ratios,,,,,, Radiogenic Ratios,,,,,,,,Age (Ma),, Grain.,,U,Th,Th/U,206Pb*,204Pb/,f206,,238U/,,207Pb/,,,206Pb/,,207Pb/,,207Pb/,,,,206Pb/,,207Pb/,,% spot,,(ppm),(ppm),,(ppm),206Pb,%,,206Pb,±,206Pb,±,,238U,±,235U,±,206Pb,±,r,,238U,±,206Pb,±,Disc Z5607 poured,,,,,,,,,,,,,,,,,,,,,,,,,, 1.1,,188,103,0.55,85,0.000033,0.04,,1.890,0.021,0.1971,0.0006,,0.5288,0.0060,14.340,0.169,0.1967,0.0006,0.961,,2737,25,2799,5,2 1.2,,137,72,0.52,64,0.000016,0.02,,1.834,0.020,0.1964,0.0006,,0.5451,0.0060,14.747,0.168,0.1962,0.0006,0.963,,2805,25,2795,5,0 2.1,,8,9,1.04,0.3, -,<0.01,,21.987,0.815,0.0693,0.0050,,0.0465,0.0018,,,,,,,293,11,,, 2.1,,262,80,0.31,55,0.000025,0.04,,4.081,0.044,0.0925,0.0005,,0.2449,0.0026,3.113,0.038,0.0922,0.0005,0.885,,1412,14,1471,11,4 5.1,,230,86,0.37,57,0.000030,0.05,,3.455,0.037,0.0998,0.0004,,0.2893,0.0031,3.963,0.045,0.0993,0.0004,0.932,,1638,15,1612,8,-2 6.1,,264,272,1.03,61, -,<0.01,,3.739,0.040,0.1009,0.0004,,0.2675,0.0028,3.723,0.042,0.1010,0.0004,0.944,,1528,14,1642,7,7 7.1,,41,20,0.49,10, -,<0.01,,3.338,0.044,0.1051,0.0009,,0.2998,0.0040,4.364,0.072,0.1056,0.0010,0.809,,1690,20,1724,18,2 8.1,,411,246,0.60,78,0.000003,<0.01,,4.510,0.047,0.0895,0.0003,,0.2217,0.0023,2.734,0.030,0.0894,0.0003,0.944,,1291,12,1414,7,9 9.1,,83,68,0.82,19,0.000067,0.11,,3.802,0.045,0.0962,0.0007,,0.2627,0.0031,3.452,0.049,0.0953,0.0008,0.822,,1504,16,1534,15,2 10.1,,71,20,0.28,15, -,<0.01,,4.157,0.050,0.0880,0.0007,,0.2406,0.0029,2.930,0.043,0.0883,0.0007,0.823,,1390,15,1389,16,0 11.1,,45,20,0.45,19,0.000006,0.01,,2.025,0.026,0.1942,0.0010,,0.4937,0.0063,13.214,0.182,0.1941,0.0010,0.926,,2587,27,2777,9,7 12.1,,497,522,1.05,177,0.000011,0.02,,2.413,0.025,0.1778,0.0003,,0.4144,0.0043,10.154,0.106,0.1777,0.0003,0.984,,2235,19,2632,3,15 13.1,,289,307,1.06,40,0.000025,0.04,,6.145,0.065,0.0733,0.0004,,0.1627,0.0017,1.637,0.020,0.0730,0.0004,0.867,,972,10,1013,12,4 14.1,,308,441,1.43,85,0.000005,0.01,,3.093,0.032,0.1131,0.0003,,0.3233,0.0034,5.039,0.055,0.1130,0.0003,0.960,,1806,17,1849,6,2 15.1,,204,79,0.39,54,0.000025,0.04,,3.220,0.035,0.1068,0.0004,,0.3105,0.0033,4.555,0.052,0.1064,0.0004,0.936,,1743,16,1739,7,0 15.2,,86,48,0.56,19, -,<0.01,,3.866,0.047,0.1072,0.0009,,0.2588,0.0031,3.841,0.057,0.1076,0.0009,0.819,,1484,16,1760,16,16 17.1,,80,28,0.35,9,0.001433,2.49,,7.350,0.089,0.0860,0.0033,,0.1327,0.0017,1.195,0.093,0.0653,0.0050,0.164,,803,10,786,160,-2 Z5612 hand picked,,,,,,,,,,,,,,,,,,,,,,,,,, 1.1,,446,37,0.08,131,0.000020,0.03,,2.928,0.031,0.1185,0.0003,,0.3414,0.0036,5.564,0.060,0.1182,0.0003,0.963,,1893,17,1929,5,2 2.1,,231,84,0.36,65,0.000044,0.07,,3.072,0.034,0.1101,0.0005,,0.3253,0.0036,4.912,0.059,0.1095,0.0005,0.925,,1816,18,1791,8,-1 3.1,,154,82,0.53,67,0.000009,0.01,,1.974,0.022,0.1877,0.0006,,0.5064,0.0056,13.099,0.152,0.1876,0.0006,0.959,,2641,24,2721,5,3 4.1,,93,55,0.59,21,0.000069,0.11,,3.797,0.046,0.0923,0.0007,,0.2631,0.0032,3.312,0.053,0.0913,0.0009,0.762,,1506,16,1453,20,-4 5.1,,89,25,0.28,24, -,<0.01,,3.220,0.041,0.1092,0.0008,,0.3107,0.0040,4.693,0.070,0.1096,0.0008,0.857,,1744,19,1792,14,3 6.1,,694,429,0.62,101,0.000036,0.06,,5.882,0.061,0.0788,0.0003,,0.1699,0.0018,1.833,0.021,0.0782,0.0004,0.916,,1012,10,1153,9,12 7.1,,107,102,0.95,49,0.000064,0.09,,1.870,0.023,0.1900,0.0008,,0.5344,0.0067,13.944,0.185,0.1893,0.0009,0.940,,2760,28,2736,7,-1 8.1,,457,133,0.29,57,0.000169,0.29,,6.914,0.074,0.0831,0.0004,,0.1442,0.0015,1.606,0.022,0.0808,0.0007,0.773,,868,9,1215,17,29 9.1,,201,226,1.13,89,0.000024,0.03,,1.933,0.021,0.1897,0.0005,,0.5172,0.0056,13.503,0.152,0.1894,0.0006,0.966,,2687,24,2737,5,2 10.1,,116,40,0.35,19, -,<0.01,,5.312,0.066,0.0788,0.0007,,0.1883,0.0024,2.055,0.032,0.0791,0.0008,0.794,,1112,13,1176,19,5 11.1,,143,106,0.74,37,0.000010,0.01,,3.308,0.038,0.1007,0.0006,,0.3022,0.0034,4.192,0.054,0.1006,0.0006,0.877,,1702,17,1635,12,-4 12.1,,411,56,0.14,181,0.000031,0.04,,1.948,0.021,0.2082,0.0004,,0.5131,0.0054,14.702,0.157,0.2078,0.0004,0.985,,2670,23,2888,3,8 13.1,,283,59,0.21,48,0.000041,0.07,,5.091,0.055,0.0779,0.0004,,0.1963,0.0021,2.094,0.026,0.0774,0.0005,0.869,,1155,11,1131,12,-2 14.1,,189,96,0.51,32, -,<0.01,,5.105,0.060,0.0846,0.0006,,0.1960,0.0023,2.295,0.032,0.0849,0.0007,0.830,,1154,12,1314,15,12 15.1,,1122,508,0.45,183,0.000040,0.07,,5.259,0.059,0.1115,0.0003,,0.1900,0.0021,2.908,0.034,0.1110,0.0003,0.970,,1121,12,1816,5,38 16.1,,151,29,0.19,40,0.000014,0.02,,3.250,0.037,0.1135,0.0006,,0.3076,0.0035,4.804,0.062,0.1133,0.0007,0.893,,1729,17,1853,10,7 17.1,,805,61,0.08,363,0.000002,<0.01,,1.906,0.020,0.1961,0.0011,,0.5248,0.0054,14.187,0.168,0.1961,0.0011,0.871,,2719,23,2794,10,3 18.1,,313,196,0.63,81,0.000014,0.02,,3.299,0.035,0.1063,0.0010,,0.3030,0.0032,4.431,0.064,0.1061,0.0011,0.732,,1706,16,1733,18,2 19.1,,323,151,0.47,71,0.000016,0.03,,3.909,0.042,0.1064,0.0005,,0.2558,0.0028,3.744,0.044,0.1062,0.0005,0.918,,1468,14,1735,9,15 20.1,,196,126,0.64,51,0.000005,0.01,,3.279,0.036,0.1061,0.0005,,0.3049,0.0033,4.457,0.053,0.1060,0.0005,0.922,,1716,16,1732,8,1 21.1,,202,109,0.54,51, -,<0.01,,3.426,0.037,0.1060,0.0005,,0.2919,0.0032,4.268,0.051,0.1060,0.0005,0.920,,1651,16,1732,9,5 22.1,,190,121,0.64,43,0.000019,0.03,,3.785,0.043,0.1012,0.0006,,0.2641,0.0030,3.675,0.048,0.1009,0.0007,0.867,,1511,15,1641,12,8 23.1,,124,73,0.58,34, -,<0.01,,3.132,0.038,0.1115,0.0007,,0.3193,0.0039,4.909,0.066,0.1115,0.0007,0.897,,1786,19,1824,11,2 24.1,,121,157,1.29,47,0.000027,0.04,,2.195,0.026,0.1868,0.0008,,0.4554,0.0055,11.709,0.149,0.1865,0.0008,0.946,,2419,24,2711,7,11 25.1,,477,45,0.09,243,0.000127,0.16,,1.689,0.018,0.3042,0.0020,,0.5913,0.0062,24.695,0.311,0.3029,0.0021,0.832,,2995,25,3485,11,14 26.1,,112,33,0.29,24,0.001258,2.05,,4.009,0.049,0.1021,0.0032,,0.2470,0.0034,3.198,0.200,0.0939,0.0053,0.548,,1423,18,1506,106,5 27.1,,162,73,0.45,43,0.000011,0.02,,3.197,0.036,0.1060,0.0010,,0.3127,0.0035,4.564,0.068,0.1058,0.0010,0.762,,1754,17,1729,18,-1 28.1,,237,67,0.28,107, -,<0.01,,1.892,0.021,0.2072,0.0005,,0.5285,0.0058,15.100,0.170,0.2072,0.0005,0.976,,2735,24,2884,4,5 29.1,,50,9,0.19,14, -,<0.01,,3.004,0.040,0.1080,0.0010,,0.3329,0.0045,4.962,0.080,0.1081,0.0010,0.834,,1852,22,1768,16,-5 30.1,,139,37,0.26,9,0.000073,0.13,,13.014,0.155,0.0619,0.0008,,0.0767,0.0009,,,,,,,477,5,,, 31.1,,98,131,1.33,32,0.000015,0.02,,2.681,0.034,0.1644,0.0009,,0.3730,0.0047,8.443,0.118,0.1642,0.0009,0.913,,2043,22,2499,10,18 32.1,,185,138,0.75,72,0.000021,0.03,,2.222,0.025,0.1869,0.0006,,0.4498,0.0051,11.574,0.135,0.1866,0.0006,0.961,,2394,22,2713,5,12 33.1,,216,51,0.24,99,0.000044,0.06,,1.872,0.021,0.1911,0.0005,,0.5339,0.0059,14.030,0.161,0.1906,0.0006,0.966,,2758,25,2747,5,0 34.1,,114,81,0.71,34,0.000069,0.11,,2.921,0.035,0.1166,0.0007,,0.3420,0.0041,5.455,0.076,0.1157,0.0008,0.866,,1896,20,1891,13,0 35.1,,355,254,0.72,55,0.000029,0.05,,5.516,0.060,0.1003,0.0009,,0.1812,0.0020,2.497,0.035,0.0999,0.0009,0.766,,1074,11,1623,17,34 36.1,,343,58,0.17,145,0.000000,0.00,,2.025,0.022,0.2093,0.0005,,0.4938,0.0053,14.249,0.156,0.2093,0.0005,0.979,,2587,23,2900,4,11 37.1,,166,25,0.15,45, -,<0.01,,3.147,0.035,0.1157,0.0007,,0.3178,0.0036,5.078,0.066,0.1159,0.0007,0.871,,1779,18,1894,11,6 38.1,,124,108,0.87,56,0.000012,0.02,,1.899,0.022,0.1845,0.0023,,0.5265,0.0061,13.381,0.229,0.1843,0.0023,0.680,,2727,26,2692,21,-1 39.1,,324,357,1.10,155,0.000007,0.01,,1.793,0.019,0.1991,0.0008,,0.5578,0.0058,15.305,0.172,0.1990,0.0008,0.934,,2857,24,2818,7,-1 40.1,,331,363,1.10,138, -,<0.01,,2.068,0.042,0.2093,0.0060,,0.4834,0.0097,13.948,0.488,0.2092,0.0060,0.576,,2542,42,2900,46,12 41.1,,254,216,0.85,91,0.000019,0.03,,2.403,0.026,0.1983,0.0007,,0.4160,0.0045,11.358,0.128,0.1980,0.0007,0.951,,2242,20,2810,6,20 42.1,,1442,607,0.42,107,0.000040,0.07,,11.602,0.268,0.0925,0.0083,,0.0861,0.0020,,,,,,,533,12,,, 43.1,,120,51,0.42,27,0.000048,0.08,,3.749,0.043,0.0998,0.0008,,0.2665,0.0031,3.642,0.053,0.0991,0.0009,0.788,,1523,16,1607,17,5 44.1,,49,58,1.19,11,0.000062,0.10,,3.978,0.053,0.0908,0.0009,,0.2511,0.0033,3.116,0.057,0.0900,0.0011,0.721,,1444,17,1425,24,-1 45.1,,229,112,0.49,38,0.000057,0.10,,5.116,0.311,0.0933,0.0014,,0.1953,0.0119,2.490,0.157,0.0925,0.0016,0.964,,1150,64,1477,32,22 46.1,,1175,626,0.53,126,0.000066,0.11,,8.025,0.082,0.0859,0.0003,,0.1245,0.0013,1.459,0.016,0.0850,0.0004,0.927,,756,7,1316,8,43 47.1,,51,60,1.18,23,0.000134,0.18,,1.898,0.137,0.2288,0.0286,,0.5259,0.0380,16.482,2.396,0.2273,0.0287,0.497,,2724,160,3033,202,10 48.1,,264,98,0.37,71,0.000006,0.01,,3.203,0.034,0.1091,0.0004,,0.3122,0.0033,4.691,0.053,0.1090,0.0004,0.940,,1751,16,1783,7,2 49.1,,642,90,0.14,311,0.000008,0.01,,1.771,0.018,0.2094,0.0007,,0.5645,0.0058,16.287,0.177,0.2093,0.0007,0.950,,2885,24,2900,5,1 50.1,,109,155,1.42,43,0.000087,0.12,,2.173,0.039,0.1891,0.0011,,0.4596,0.0082,11.915,0.225,0.1880,0.0012,0.946,,2438,36,2725,10,11 51.1,,110,126,1.15,28,0.000015,0.02,,3.399,0.042,0.1010,0.0053,,0.2942,0.0037,4.090,0.221,0.1008,0.0053,0.232,,1662,18,1640,97,-1 52.1,,32,9,0.27,5,0.000477,0.81,,5.595,0.107,0.0796,0.0037,,0.1773,0.0034,1.778,0.114,0.0728,0.0044,0.301,,1052,19,1007,124,-4 53.1,,1272,347,0.27,140,0.000061,0.11,,7.796,0.213,0.0763,0.0003,,0.1281,0.0035,1.332,0.037,0.0754,0.0003,0.988,,777,20,1080,9,28 "Uncertainties are given at the one s level. Error in Temora reference zircon calibration was 0.63% & 0.52% for the analytical session (not included in above errors but required when comparing 206Pb/238U data from different mounts). f206 % denotes the percentage of 206Pb that is common Pb. Correction for common Pb made using the measured 204Pb/206Pb ratio. For % Disc, 0% denotes a concordant analysis.",