Lab ID Database ID Seamount Depth (m) 238U (ppm) 230Th (ppt) 232Th (ppb) delta234U, raw (o/oo) (230Th/238U)act Age raw (yrs) Age corr (yrs) initial delta234U, corr (o/oo)" UAM06 ALV-3891-1459-003-011 Gregg 1176 3.617 ± 0.002 0.22 ± 0.00 0.292 ± 0.001 148.2 ± 1.1 0.00371 ± 0.00002 354 ± 2 315 ± 35 148.3 ± 1.1 UAM05 ALV-3891-1459-003-007 Gregg 1176 4.188 ± 0.005 8.08 ± 0.04 1.617 ± 0.035 144.9 ± 1.4 0.11782 ± 0.00053 11833 ± 58 11623 ± 212 149.7 ± 1.4 UAM08 ALV-3891-1459-003-006 Gregg 1176 4.682 ± 0.002 9.25 ± 0.04 3.551 ± 0.040 144.8 ± 1.1 0.12067 ± 0.00053 12135 ± 58 11724 ± 400 149.7 ± 1.2 UAM07 ALV-3891-1459-003-006 Gregg 1176 4.116 ± 0.002 8.65 ± 0.04 2.499 ± 0.038 143.8 ± 1.2 0.12840 ± 0.00057 12971 ± 63 12638 ± 328 149.1 ± 1.2 UAI01 ALV-3885-1452-004-007 Muir 1878 3.573 ± 0.002 24.65 ± 0.11 0.987 ± 0.106 128.1 ± 1.2 0.42146 ± 0.00183 50574 ± 286 50351 ± 355 147.7 ± 1.3 UAL12 ALV-3887-1652-005-006 Muir 2265 3.480 ± 0.001 7.16 ± 0.03 0.384 ± 0.031 142.4 ± 1.1 0.12576 ± 0.00054 12705 ± 59 12643 ± 84 147.6 ± 1.1 UAJ04 ALV-3887-1549-004-002 Muir 2372 3.755 ± 0.002 9.30 ± 0.04 0.474 ± 0.041 142.1 ± 1.1 0.15131 ± 0.00067 15475 ± 75 15402 ± 102 148.4 ± 1.2 UAK02 ALV-3887-1549-004-004 Muir 2372 3.470 ± 0.002 9.01 ± 0.04 0.539 ± 0.039 143.3 ± 1.1 0.15862 ± 0.00068 16258 ± 77 16168 ± 116 150.0 ± 1.1 UAI06 ALV-3887-1436-003-006 Muir 2441 3.750 ± 0.001 39.46 ± 0.17 2.076 ± 0.171 116.6 ± 1.2 0.64301 ± 0.00279 91822 ± 637 91181 ± 882 150.9 ± 1.6 UAI20 ALV-3887-1324-002-002 Muir 2546 4.330 ± 0.002 8.82 ± 0.04 0.810 ± 0.039 142.9 ± 1.2 0.12439 ± 0.00055 12553 ± 61 12449 ± 117 148.1 ± 1.2 Calculated Uranium series ages are reported in years before date of analysis (2004, 2005) and are corrected for initial 230Th. For further details on the dating method see Robinson et al. [2005]. All errors are 2 sigma standard errors."