Station Latitude Longitude Depth Pb_Concentration Pb206_Pb207 Pb206_Pb207_2SD Pb208_Pb207 Pb208_Pb207_2SD Pb206_Pb204 Pb206_Pb204_2SD Comment ST1 23.5 121.74 10 36.2 1.1698 0.0002 2.4492 0.0003 18.27 0.02 nd ST1 23.5 121.74 30 38.4 1.1683 0.0003 2.4499 0.0008 18.24 0.03 nd ST1 23.5 121.74 48 42.5 1.1701 0.0003 2.4505 0.0006 18.27 0.02 nd ST1 23.5 121.74 100 52.2 1.1657 0.0003 2.45 0.0006 18.21 0.02 nd ST1 23.5 121.74 600 35.8 1.1673 0.0003 2.4527 0.0008 18.22 0.03 nd ST1 23.5 121.74 800 35.8 1.1674 0.0002 2.4526 0.0006 18.22 0.03 nd ST1 23.5 121.74 1000 29.9 1.1675 0.0004 2.4504 0.0006 18.23 0.03 nd ST1 23.5 121.74 1500 21 1.171 0.0003 2.4489 0.0006 18.29 0.03 nd ST1 23.5 121.74 2000 17.7 1.1716 0.0002 2.4549 0.0006 18.31 0.02 nd ST1 23.5 121.74 3000 31.2 1.1788 0.0005 2.4697 0.0009 18.46 0.06 nd ST1 23.5 121.74 3237 36.7 1.1839 0.0003 2.4709 0.0007 18.51 0.03 nd ST3 23.5 122.25 70 43.4 1.1674 0.0001 2.4468 0.0002 18.22 0.01 nd ST3 23.5 122.25 100 41.5 1.1648 0.0001 2.4448 0.0004 18.19 0.01 nd ST3 23.5 122.25 150 43.4 1.1636 0.0001 2.4477 0.0003 18.18 0.01 nd ST3 23.5 122.25 200 47.5 1.1648 0.0002 2.4466 0.0004 18.19 0.01 nd ST3 23.5 122.25 600 30.3 1.1648 0.0002 2.4508 0.0004 18.17 0.02 nd ST3 23.5 122.25 800 24.6 1.1664 0.0003 2.4514 0.0005 18.2 0.03 nd ST3 23.5 122.25 1000 23.7 1.1684 0.0002 2.4542 0.0004 18.26 0.02 nd ST3 23.5 122.25 1500 23.4 1.1692 0.0002 2.4535 0.0005 18.25 0.02 nd ST3 23.5 122.25 2000 21.9 1.1708 0.0003 2.4528 0.0006 18.3 0.02 nd ST3 23.5 122.25 3000 26.4 1.1805 0.0002 2.4618 0.0004 18.45 0.02 nd ST3 23.5 122.25 4000 37.8 1.1738 0.0002 2.4575 0.0004 18.34 0.01 nd ST3 23.5 122.25 4500 46.1 1.1797 0.0003 2.4689 0.0006 18.45 0.02 nd ST4 23.5 123 100 52.1 1.1655 0.0003 2.4475 0.0008 18.21 0.02 nd ST4 23.5 123 200 49.3 1.1634 0.0003 2.4469 0.0005 18.17 0.01 nd ST4 23.5 123 400 45.6 1.163 0.0002 2.4486 0.0005 18.16 0.01 nd ST4 23.5 123 600 39 1.1635 0.0002 2.4488 0.0004 18.16 0.01 nd ST4 23.5 123 800 35 1.1649 0.0003 2.4506 0.0006 18.2 0.01 nd ST4 23.5 123 1000 29.2 1.1675 0.0003 2.4527 0.0006 18.24 0.01 nd ST5 23.5 124 30 52.2 1.1631 0.0001 2.4474 0.0003 18.17 0.01 nd ST5 23.5 124 65 58 1.1634 0.0003 2.4474 0.0006 18.18 0.02 nd ST5 23.5 124 100 60.1 1.1635 0.0002 2.448 0.0006 18.18 0.01 nd ST5 23.5 124 150 62.2 1.1626 0.0002 2.4479 0.0005 18.16 0.01 nd ST5 23.5 124 200 54.8 1.1631 0.0002 2.4487 0.0006 18.17 0.01 nd ST5 23.5 124 600 46 1.1631 0.0003 2.4496 0.0005 18.16 0.02 nd ST5 23.5 124 1000 30 1.1682 0.0002 2.4518 0.0006 18.25 0.02 nd ST5 23.5 124 1500 22.7 1.1705 0.0002 2.4558 0.0006 18.28 0.02 nd ST5 23.5 124 2431 13.7 1.1772 0.0006 2.4571 0.0027 18.43 0.2 nd ST6 23.5 125 30 62.2 1.1652 0.0003 2.4482 0.0009 18.21 0.02 nd ST6 23.5 125 67 66 1.1641 0.0008 2.4478 0.0003 18.18 0.03 Values are mean and standard error of isotope results from duplicate samples. ST6 23.5 125 100 65.4 1.164 0.0006 2.4476 0.0003 18.18 0 Values are mean and standard error of isotope results from duplicate samples. ST6 23.5 125 150 59.1 1.1632 0.0003 2.4477 0.0005 18.16 0.02 nd ST6 23.5 125 200 59.7 1.1632 0.0001 2.4485 0.0005 18.15 0 Values are mean and standard error of isotope results from duplicate samples. ST6 23.5 125 400 48.2 1.1616 0.0003 2.4497 0.0005 18.17 0 Values are mean and standard error of isotope results from duplicate samples. ST6 23.5 125 600 44.5 1.1621 0.0004 2.4482 0.0007 18.14 0.02 nd ST6 23.5 125 800 37.3 1.1653 0.0003 2.4499 0.0008 18.2 0.02 nd ST6 23.5 125 1000 21.9 1.1663 0.0011 2.4533 0.0004 18.26 0.01 Values are mean and standard error of isotope results from duplicate samples. ST6 23.5 125 1500 22.7 1.166 0.0002 2.4512 0.0004 18.21 0.02 nd ST6 23.5 125 2000 16.4 1.1695 0.0014 2.4513 0.0009 18.24 0.03 Values are mean and standard error of isotope results from duplicate samples. ST6 23.5 125 3000 17.9 1.1704 0.0003 2.4555 0.0007 18.28 0.02 nd ST6 23.5 125 4000 11.4 1.1742 0.0005 2.452 0.0009 18.22 0.07 Values are mean and standard error of isotope results from duplicate samples. ST6 23.5 125 4500 19.5 1.1723 0.002 2.4522 0.0006 18.24 0.03 Values are mean and standard error of isotope results from duplicate samples. ST7 23.5 126 50 52.2 1.1628 0.0002 2.4469 0.0005 18.16 0.01 nd ST7 23.5 126 95 58 1.1647 0 2.4474 0.0006 18.18 0 nd ST7 23.5 126 150 60.1 1.1625 0.0003 2.4472 0.0005 18.17 0.04 nd ST7 23.5 126 200 62.2 1.1623 0.0003 2.4479 0.0004 18.16 0.01 nd ST7 23.5 126 400 54.8 1.1616 0.0002 2.4491 0.0004 18.14 0.01 nd ST7 23.5 126 600 46 1.1617 0.0002 2.4476 0.0005 18.14 0.01 nd ST7 23.5 126 800 36.9 1.164 0.0002 2.4487 0.0006 18.18 0.01 nd ST7 23.5 126 1000 30 1.1664 0.0002 2.4517 0.0006 18.22 0.01 nd ST7 23.5 126 1500 22.7 1.1674 0.0002 2.4516 0.0005 18.23 0.01 nd ST7 23.5 126 2000 14.6 1.1698 0.0004 2.4562 0.0007 18.33 0.03 nd ST7 23.5 126 3000 13.7 1.1752 0.0002 2.4623 0.0004 18.38 0.02 nd ST7 23.5 126 4000 11.2 1.1721 0.0004 2.4575 0.001 18.33 0.03 nd ST7 23.5 126 4909 15.3 1.1762 0.0004 2.4617 0.0008 18.42 0.03 nd ST8 23.5 128 10 47.4 1.1638 0.0003 2.4469 0.0004 18.19 0.02 nd ST8 23.5 128 30 42.4 1.1641 0.0003 2.4471 0.0008 18.19 0.02 nd ST8 23.5 128 80 53 1.164 0.0003 2.4489 0.0006 18.24 0.02 nd ST8 23.5 128 110 51.5 1.1642 0.0003 2.4476 0.0008 18.18 0.03 nd ST8 23.5 128 150 48.1 1.1651 0.0003 2.4465 0.0005 18.19 0.02 nd ST8 23.5 128 200 55.8 1.1627 0.0002 2.4477 0.0005 18.16 0.02 nd ST8 23.5 128 400 49.9 1.1633 0.0003 2.4497 0.0005 18.16 0.02 nd ST8 23.5 128 600 43.9 1.1622 0.0002 2.4481 0.0007 18.16 0.02 nd ST8 23.5 128 800 40.8 1.1634 0.0003 2.4484 0.0005 18.13 0.02 nd ST8 23.5 128 1000 30.3 1.1646 0.0004 2.4489 0.0007 18.17 0.03 nd ST8 23.5 128 2000 19.1 1.1703 0.0003 2.4512 0.0009 18.29 0.05 nd ST8 23.5 128 3000 16.3 1.1716 0.0003 2.4537 0.0007 18.31 0.02 nd