Table S4 U-Pb Ages determined by LA-HR-ICP-MS for detrital zircons from South Mayo Trough. ,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,, Sample ,206Pb/238U,2_,207Pb/235U,2_,207Pb/206Pb,2_,206Pb/204Pb,f206Pb(*),206Pb/238U Age (Ma),2_,207Pb/235U Age (Ma),2_,207Pb/206Pb Age (Ma),2_,Final Age (Ma),2_ WPG90/4_1,0.374,0.003,6.67,0.07,0.128,0.001,-318521,-1.40%,2046,15,2070,9,2072,16,2072,16 WPG90/4_2,0.176,0.002,1.99,0.03,0.081,0.001,1034842,-2.20%,1044,10,1113,9,1221,28,1221,28 WPG90/4_3,0.403,0.004,7.6,0.08,0.135,0.001,-652957,-0.30%,2182,18,2183,10,2162,17,2162,17 WPG90/4_4,0.442,0.003,9.29,0.08,0.151,0.001,1442356,-0.60%,2357,15,2367,7,2355,11,2355,11 WPG90/4_5,0.181,0.002,1.87,0.03,0.074,0.001,30050,-0.40%,1073,10,1069,11,1035,37,1035,37 WPG90/4_6,0.103,0.001,3.9,0.06,0.274,0.004,339210,Discordant,630,6,1612,11,3331,21,Discordant, WPG90/4_7,0.191,0.003,2.01,0.04,0.076,0.001,1117264,0.00%,1127,15,1121,12,1093,16,1093,16 WPG90/4_8,0.499,0.01,12.05,0.26,0.173,0.004,34459,-1.00%,2602,41,2606,21,2587,34,2587,34 WPG90/4_9,0.489,0.005,13.01,0.14,0.191,0.001,633706,-2.60%,2567,24,2679,10,2754,10,2754,10 WPG90/4_10,0.201,0.004,3.58,0.08,0.128,0.001,456342,Discordant,1184,22,1544,18,2067,15,Discordant, WPG90/4_11,0.32,0.004,7.78,0.12,0.176,0.002,260968,Discordant,1792,21,2204,14,2617,16,Discordant, WPG90/4_12,0.196,0.004,3.25,0.06,0.119,0.001,370091,Discordant,1150,19,1464,15,1946,15,Discordant, WPG90/4_13,0.253,0.003,3.12,0.05,0.09,0.001,3466,-0.30%,1455,13,1437,11,1416,20,1416,20 WPG90/4_14,0.169,0.001,1.69,0.02,0.073,0.001,729160,-0.20%,1007,7,1003,7,1008,23,1008,23 WPG90/4_15,0.175,0.001,1.81,0.02,0.075,0.001,-11490,-0.50%,1040,7,1049,6,1074,16,1074,16 WPG90/4_16,0.173,0.003,1.83,0.06,0.076,0.003,2525,-0.90%,1029,18,1049,22,1101,70,1101,70 WPG90/4_17,0.227,0.002,3.19,0.05,0.103,0.002,70873,Discordant,1317,11,1454,13,1681,35,Discordant, WPG90/4_18,0.545,0.008,14.2,0.22,0.19,0.003,45471,-0.80%,2803,33,2762,15,2746,25,2746,25 WPG90/4_19,0.624,0.004,21.39,0.17,0.25,0.002,136242,-0.10%,3129,17,3158,7,3184,10,3184,10 WPG90/4_20,0.231,0.003,2.89,0.04,0.091,0.001,-40590,-0.30%,1338,15,1377,11,1455,24,1455,24 WPG90/4_21,0.227,0.002,2.74,0.03,0.087,0.001,58409,-0.20%,1320,10,1341,8,1371,21,1371,21 WPG90/4_22,0.182,0.002,1.93,0.03,0.077,0.001,-101397,-0.90%,1080,10,1090,10,1113,34,1113,34 WPG90/4_23,0.236,0.003,3.23,0.04,0.099,0.001,557571,Discordant,1363,13,1464,10,1598,20,Discordant, WPG90/4_24,0.453,0.005,11.25,0.14,0.178,0.002,-108124,Discordant,2411,21,2543,12,2635,20,Discordant, WPG90/4_25,0.519,0.003,13.44,0.09,0.188,0.001,2718432,-0.10%,2698,14,2712,6,2722,10,2722,10 WPG90/4_26,0.178,0.002,1.77,0.03,0.073,0.002,10112,-0.10%,1057,10,1034,12,1009,43,1009,43 WPG90/4_27,0.245,0.002,2.97,0.05,0.088,0.002,-13970,-0.50%,1411,12,1397,12,1392,33,1392,33 WPG90/4_28,0.302,0.005,4.2,0.1,0.1,0.002,-18280,-2.90%,1699,23,1675,18,1630,41,1630,41 WPG90/4_29,0.287,0.002,3.99,0.04,0.101,0.001,118270,-0.40%,1624,10,1631,8,1637,18,1637,18 WPG90/4_30,0.217,0.002,2.5,0.04,0.084,0.002,-7354,-0.70%,1266,13,1271,13,1292,37,1292,37 WPG90/4_31,0.224,0.002,2.64,0.03,0.086,0.001,-8823,-0.20%,1303,12,1311,9,1341,27,1341,27 WPG90/4_32,0.223,0.002,2.62,0.04,0.086,0.001,-79359,0.10%,1297,11,1304,10,1342,22,1342,22 WPG90/4_33,0.229,0.003,2.65,0.06,0.084,0.002,1794,0.00%,1330,16,1311,15,1301,45,1301,45 WPG90/4_34,0.217,0.002,2.28,0.02,0.078,0.001,-1188,0.00%,1267,8,1206,7,1140,17,1140,17 WPG90/4_35,0.209,0.002,2.27,0.04,0.079,0.002,51518,-0.80%,1220,13,1201,13,1164,42,1164,42 WPG90/4_36,0.593,0.004,17.24,0.13,0.212,0.002,5379,-0.40%,3005,17,2948,7,2920,12,2920,12 WPG90/4_37,0.176,0.001,1.8,0.03,0.073,0.001,-19,-0.70%,1047,8,1045,9,1006,30,1006,30 WPG90/4_38,no data,,,,,,144913,0.00%,,,,,,,, WPG90/4_39,0.492,0.004,12.3,0.12,0.18,0.002,113539,-0.10%,2581,19,2628,9,2649,17,2649,17 WPG90/4_40,0.509,0.005,13.49,0.12,0.192,0.002,-110149,0.20%,2650,21,2713,8,2757,14,2757,14 WPG90/4_41,0.177,0.002,1.83,0.02,0.075,0.001,10521,0.30%,1052,9,1057,9,1072,23,1072,23 WPG90/4_42,0.164,0.003,1.71,0.06,0.075,0.003,,0.40%,981,15,1017,22,1068,74,1068,74 WPG90/4_43,0.068,0.003,2.86,0.11,0.316,0.006,-160561,Discordant,421,15,1357,21,3550,31,Discordant, WPG90/4_44,0.388,0.008,10.76,0.22,0.201,0.004,-86775,Discordant,2110,35,2503,19,2832,30,Discordant, DL90/7_1,0.304,0.003,4.17,0.05,0.098,0.001,-8564,-0.50%,1713,13,1668,9,1591,22,1591,22 DL90/7_2,0.579,0.009,15.4,0.22,0.19,0.003,-52986,-1.00%,2946,36,2838,13,2744,24,2744,24 DL90/7_3,0.228,0.002,2.6,0.03,0.082,0.001,-103049,-0.20%,1327,10,1303,9,1240,23,1240,23 DL90/7_4,0.306,0.003,4.31,0.07,0.102,0.001,49357,-1.10%,1720,17,1694,13,1657,26,1657,26 DL90/7_5,0.19,0.002,1.91,0.03,0.073,0.001,-21526,-0.40%,1119,11,1089,12,1006,35,1006,35 DL90/7_6,0.311,0.003,4.39,0.05,0.102,0.001,-36789,-0.40%,1744,14,1709,9,1666,19,1666,19 DL90/7_7,0.182,0.002,1.88,0.03,0.075,0.001,-190736,-0.30%,1076,10,1072,10,1062,30,1062,30 DL90/7_8,0.18,0.002,1.84,0.03,0.074,0.001,203471,-0.70%,1066,9,1059,10,1030,31,1030,31 DL90/7_9,0.179,0.002,1.86,0.03,0.076,0.001,1632007,-0.50%,1059,11,1064,11,1094,34,1094,34 DL90/7_10,0.182,0.001,1.9,0.02,0.075,0.001,1401720,-0.50%,1080,8,1082,8,1081,24,1081,24 DL90/7_11,0.245,0.003,2.98,0.07,0.087,0.002,3970,-0.70%,1415,16,1394,15,1359,40,1359,40 DL90/7_12,0.182,0.002,1.91,0.04,0.075,0.002,-2099,-0.30%,1078,10,1083,12,1076,41,1076,41 DL90/7_13,0.255,0.004,3.17,0.07,0.089,0.002,14936,-0.80%,1463,19,1448,18,1396,48,1396,48 DL90/7_14,0.204,0.002,2.21,0.03,0.078,0.001,31686,-0.50%,1195,11,1185,10,1135,31,1135,31 DL90/7_15,0.2,0.002,2.17,0.02,0.079,0.001,28251,-0.40%,1174,9,1173,8,1174,24,1174,24 DL90/7_16,0.256,0.004,3.47,0.08,0.098,0.002,53769,0.40%,1471,23,1517,19,1595,41,1595,41 DL90/7_17,0.5,0.005,12.61,0.14,0.181,0.002,-152826,-0.60%,2615,21,2651,10,2660,19,2660,19 DL90/7_18,0.248,0.003,3.07,0.04,0.089,0.001,-32903,-0.60%,1425,14,1423,10,1413,29,1413,29 DL90/7_19,0.283,0.002,3.91,0.04,0.099,0.001,-180616,0.30%,1607,12,1615,9,1599,20,1599,20 DL90/7_20,0.175,0.001,1.83,0.02,0.076,0.001,-5230177,-0.20%,1040,8,1055,8,1084,25,1084,25 DL90/7_21,0.236,0.002,2.84,0.03,0.088,0.001,26110,-0.10%,1364,11,1368,9,1373,22,1373,22 DL90/7_22,0.172,0.003,1.79,0.05,0.075,0.002,26497,-0.90%,1024,14,1042,19,1066,57,1066,57 DL90/7_23,0.185,0.002,2.03,0.04,0.08,0.002,702890,-0.20%,1096,12,1126,13,1197,41,1197,41 IT/5_1,0.171,0.002,1.81,0.03,0.077,0.001,21569,0.20%,1016,13,1046,12,1121,35,1121,35 IT/5_2,0.161,0.002,1.67,0.04,0.075,0.002,69037,0.30%,964,12,997,15,1079,45,1079,45 IT/5_3,0.084,0.001,0.7,0.01,0.06,0.001,-66446,-0.30%,520,6,538,8,596,41,520,41 IT/5_4,0.179,0.003,1.89,0.04,0.076,0.001,21599,-0.50%,1063,16,1075,15,1090,30,1090,30 IT/5_5,0.163,0.002,1.69,0.02,0.075,0.001,-60827,-0.30%,975,9,1005,9,1069,28,1069,28 IT/5_6,0.202,0.002,2.42,0.05,0.086,0.002,-23762,-0.10%,1186,13,1250,15,1346,36,1346,36 IT/5_7,0.16,0.002,1.74,0.04,0.077,0.002,-192633,-0.60%,955,14,1026,14,1127,48,1127,48 IT/5_8,0.259,0.003,3.32,0.05,0.093,0.001,-539103,-1.50%,1483,14,1484,12,1488,29,1488,29 IT/5_9,0.568,0.005,16.39,0.14,0.208,0.002,-3125626,-0.70%,2899,20,2899,8,2893,13,2893,13 IT/5_10,0.367,0.003,6.1,0.06,0.121,0.001,-13832210,-8.70%,2015,13,1991,9,1971,17,1971,17 IT/5_11,0.403,0.004,6.27,0.08,0.114,0.001,-8367642,-7.40%,2183,18,2014,11,1856,19,1856,19 IT/5_12,0.539,0.007,13.6,0.14,0.182,0.001,3034129,-0.50%,2777,28,2721,10,2668,13,2668,13 IT/5_13,0.494,0.005,12.52,0.14,0.185,0.001,779585,-2.70%,2586,21,2643,10,2701,13,2701,13 IT/5_14,0.252,0.001,3.15,0.03,0.091,0.001,1519530,-1.50%,1452,8,1445,7,1451,13,1451,13 IT/5_15,0.198,0.001,2.11,0.02,0.078,0.001,-1207918,-0.70%,1166,8,1152,7,1147,18,1147,18 IT/5_16,0.172,0.001,1.75,0.02,0.075,0.001,-27640,-0.60%,1025,7,1027,7,1061,23,1061,23 IT/5_17,0.283,0.003,3.91,0.05,0.102,0.001,141374,-0.20%,1607,13,1614,10,1652,21,1652,21 IT/5_18,0.227,0.007,3.52,0.12,0.113,0.001,864333,0.20%,1310,40,1518,27,1842,15,1842,15 IT/5_19,0.178,0.002,1.86,0.02,0.076,0.001,42453,-1.10%,1056,8,1067,6,1096,20,1096,20 IT/5_20,0.075,0.001,0.59,0.01,0.057,0.001,-20930,-0.60%,465,5,471,7,498,38,498,38 IT/5_21,0.526,0.005,13.18,0.11,0.181,0.001,-67880,-0.20%,2727,20,2693,8,2665,10,2665,10 IT/5_22,0.219,0.003,2.43,0.04,0.081,0.001,-102109,-0.90%,1278,14,1256,11,1215,26,1215,26 IT/5_23,0.567,0.005,14.12,0.13,0.18,0.001,-79375,-0.40%,2894,22,2758,9,2656,13,2656,13 IT/5_24,0.18,0.002,1.87,0.03,0.075,0.001,-28076,-0.70%,1068,13,1069,12,1057,34,1057,34 IT/5_25,0.257,0.002,3.29,0.03,0.093,0.001,-105139,-1.10%,1475,12,1479,7,1488,15,1488,15 IT/5_26,0.289,0.004,3.98,0.05,0.1,0.001,177836,-3.90%,1637,18,1631,11,1623,21,1623,21 IT/5_27,0.551,0.005,14,0.13,0.186,0.001,26378,-0.90%,2829,20,2748,9,2711,13,2711,13 IT/5_28,0.194,0.002,2,0.03,0.075,0.001,-38063,-1.00%,1145,11,1118,10,1056,31,1056,31 IT/5_29,0.191,0.002,1.95,0.03,0.074,0.001,43598,-1.30%,1125,12,1104,10,1054,26,1054,26 IT/12_1,0.165,0.002,1.66,0.04,0.073,0.002,30438,-0.40%,984,12,987,17,1011,54,1011,54 IT/12_2,0.074,0.001,0.58,0.01,0.057,0.002,35804,-0.20%,460,6,461,10,479,60,460,6 IT/12_3,0.213,0.002,2.41,0.03,0.083,0.001,-323325,0.00%,1242,11,1246,9,1279,18,1279,18 IT/12_4,0.119,0.002,1.39,0.03,0.086,0.001,-234096,Discordant,725,14,884,14,1328,25,Discordant, IT/12_5,0.074,0.001,0.58,0.01,0.056,0.001,187561,-0.20%,463,5,460,9,460,54,463,5 IT/12_6,0.072,0.001,0.56,0.01,0.057,0.001,475744,-0.20%,450,4,455,6,495,35,450,4 IT/12_7,0.073,0.001,0.57,0.02,0.056,0.002,97371,0.10%,456,5,456,11,466,70,456,5 IT/12_8,0.074,0.001,0.59,0.01,0.057,0.002,2901977,-0.70%,462,6,467,9,501,60,462,6 IT/12_9,0.072,0.001,0.56,0.02,0.056,0.002,-336995,-0.50%,451,5,449,11,437,74,451,5 IT/12_10,0.075,0.001,0.58,0.02,0.057,0.002,-98278,-0.40%,465,6,464,11,481,69,465,6 IT/12_11,0.073,0.001,0.6,0.02,0.06,0.002,-78481,-0.40%,454,7,472,13,595,85,454,7 IT/12_12,0.078,0.001,0.62,0.03,0.058,0.002,-83749,0.20%,483,7,489,17,521,94,483,7 IT/12_13,0.075,0.001,0.58,0.02,0.057,0.003,-12345,-0.70%,469,8,464,16,484,102,469,8 IT/12_14,0.078,0.001,0.59,0.02,0.055,0.002,6672,-0.20%,484,6,470,11,413,72,484,6 IT/17_1,0.078,0.001,0.63,0.02,0.058,0.002,4407,-1.00%,487,6,499,10,524,58,487,6 IT/17_2,0.079,0.001,0.61,0.02,0.056,0.002,7722,-0.90%,490,8,483,12,435,73,490,8 IT/17_3,0.074,0.001,0.61,0.02,0.058,0.002,-8464,-1.00%,459,7,482,11,535,72,459,7 IT/17_4,0.078,0.001,0.62,0.02,0.057,0.002,12598,-1.00%,485,7,486,14,495,86,485,7 IT/17_5,0.078,0.001,0.62,0.02,0.057,0.001,32869,-1.30%,483,6,488,10,498,56,483,6 IT/17_6,0.078,0.001,0.61,0.02,0.056,0.002,61877,-0.80%,483,6,485,12,448,70,483,6 IT/17_7,0.083,0.001,0.66,0.02,0.057,0.002,49563,-1.00%,512,8,509,14,496,80,512,8 IT/17_8,0.085,0.002,0.7,0.02,0.059,0.002,324796,-0.70%,526,10,539,15,576,76,526,10 IT/17_9,0.082,0.001,0.62,0.02,0.056,0.002,1388828,-1.70%,510,7,489,12,437,79,510,7 IT/17_10,0.081,0.001,0.67,0.03,0.06,0.002,-865941,-0.70%,503,9,519,16,587,88,503,9 IT/17_11,0.08,0.001,0.72,0.02,0.065,0.002,93102,-0.30%,498,7,552,14,774,76,498,7 IT/17_12,0.081,0.001,0.64,0.01,0.058,0.001,223750,-1.10%,500,7,502,9,511,49,500,7 IT/17_13,0.077,0.001,0.63,0.02,0.059,0.002,44981,-0.50%,481,8,495,13,561,82,481,8 IT/17_14,0.081,0.001,0.63,0.02,0.056,0.002,8506,-0.80%,500,6,495,12,465,67,500,6 IT/17_15,0.081,0.001,0.65,0.02,0.057,0.002,9927,-0.80%,504,7,508,13,507,67,504,7 IT/17_16,0.079,0.001,0.63,0.02,0.058,0.002,4179,-0.40%,491,6,497,9,526,59,491,6 IT/17_17,0.085,0.001,0.65,0.02,0.056,0.002,2234,-0.50%,525,9,507,15,467,84,525,9 IT/17_18,0.078,0.001,0.61,0.02,0.057,0.002,-18800,-0.40%,487,6,485,10,473,60,487,6 IT/17_19,0.079,0.001,0.62,0.03,0.057,0.003,-2094,0.20%,492,9,491,19,486,108,492,9 IT/17_20,0.19,0.012,2.53,0.21,0.088,0.003,1652,-0.90%,1103,68,1157,73,1378,68,1378,68 IT/17_21,0.083,0.001,0.64,0.02,0.056,0.002,-13726,-0.60%,513,7,499,12,440,65,513,7 IT/17_22,0.081,0.001,0.64,0.02,0.056,0.002,-10255,-0.60%,504,6,504,11,467,62,504,6 IT/17_23,0.57,0.007,15.52,0.24,0.194,0.002,-11183,-0.20%,2908,29,2846,14,2779,16,2779,16 IT/17_24,0.078,0.001,0.62,0.03,0.056,0.003,-5477,0.30%,485,8,489,17,469,110,485,8 IT/17_25,0.082,0.001,0.64,0.03,0.057,0.002,-12605,-1.10%,510,8,499,16,478,90,510,8 IT/17_26,no data,,,,,,,0.00%,,,,,,,, IT/17_27,0.082,0.001,0.65,0.02,0.057,0.002,-13408,-0.30%,510,7,510,16,482,82,510,7 IT/18_1,0.135,0.003,2.58,0.09,0.136,0.003,-34088,Discordant,818,19,1292,27,2177,32,Discordant, IT/18_2,0.076,0.001,0.59,0.02,0.056,0.002,-10446,-0.20%,474,6,471,11,446,70,474,6 IT/18_3,0.08,0.001,0.62,0.02,0.057,0.002,-2321,-0.20%,496,7,488,13,491,71,496,7 IT/18_4,0.492,0.006,11.88,0.13,0.174,0.001,-44475,-0.20%,2575,24,2594,10,2600,12,2600,12 IT/18_5,0.084,0.001,0.64,0.02,0.056,0.002,3142,-0.90%,517,7,501,11,440,64,517,7 IT/18_6,0.085,0.001,0.67,0.02,0.058,0.002,232,-0.20%,526,9,520,14,541,82,526,9 IT/18_7,0.085,0.001,0.65,0.02,0.057,0.002,-4308,-0.90%,526,7,509,11,474,65,526,7 IT/18_8,0.081,0.001,0.63,0.02,0.059,0.002,-2498,-0.90%,500,7,503,12,555,69,500,7 IT/18_9,0.084,0.001,0.64,0.02,0.057,0.002,15888,-0.90%,519,7,506,12,496,76,519,7 IT/18_10,0.158,0.012,1.59,0.15,0.079,0.002,-6219,1.00%,928,65,897,57,1162,51,1162,51 IT/18_11,0.079,0.001,0.59,0.02,0.056,0.002,-31476,-1.60%,489,6,477,10,435,63,489,6 IT/18_12,0.078,0.001,0.6,0.02,0.056,0.002,51463,-0.90%,483,6,476,10,436,65,483,6 IT/18_13,0.075,0.001,0.58,0.02,0.056,0.002,17243,-1.70%,465,8,463,13,456,80,465,8 IT/18_14,0.077,0.003,0.81,0.05,0.075,0.005,-1487,2.80%,480,17,594,28,1070,122,480,17 IT/18_15,0.075,0.001,0.6,0.02,0.056,0.002,-10904,-0.20%,466,6,473,12,457,76,466,6 IT/18_16,0.074,0.001,0.61,0.02,0.058,0.002,143434,-12.20%,459,7,482,11,541,62,459,7 IT/18_17,0.078,0.001,0.69,0.02,0.062,0.002,30089,-1.00%,487,7,529,12,685,61,487,7 IT/18_18,0.078,0.001,0.63,0.02,0.058,0.002,-18399,-0.30%,484,8,495,10,541,57,484,8 IT/18_19,0.078,0.001,0.59,0.02,0.056,0.002,9207,-0.80%,482,7,474,13,446,72,482,7 IT/18_20,0.077,0.001,0.6,0.02,0.056,0.002,290653,-0.60%,475,7,478,12,436,70,475,7 IT/18_21,0.079,0.001,0.61,0.02,0.055,0.002,-5693,-0.40%,491,7,484,13,412,82,491,7 IT/18_22,0.079,0.001,0.61,0.02,0.056,0.002,8396,-0.70%,489,7,484,13,438,75,489,7 IT/18_23,0.077,0.002,0.64,0.03,0.06,0.003,2870,-0.60%,477,9,504,16,591,97,477,9 IT/18_24,0.078,0.001,0.6,0.02,0.055,0.002,6423,-0.40%,485,8,472,12,421,74,485,8 ,,,,,,,,,,,,,,,, "* Fraction of commonly derived 206Pb, assuming any common lead was incorporated at the time of crystalisation, and that the isotopic composition of comon lead follows the two stage model of Stacey and Kramer (1978)",,,,,,,,,,,,,,,,