Western Mediterranean d18O and Uk37 Data and SST Reconstructions ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!! NAME OF DATA SET: Western Mediterranean d18O and Uk37 Data and SST Reconstructions LAST UPDATE: 11/2006 (Original receipt by WDC Paleo) CONTRIBUTOR: Isabel Cacho, Universitat de Barcelona IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2006-106 SUGGESTED DATA CITATION: Cacho, I., et al. 2006. Western Mediterranean d18O and Uk37 Data and SST Reconstructions. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2006-106. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Cacho, I., J.O. Grimalt, M. Canals, L. Sbaffi, N.J. Shackleton, J. Schoenfeld, and R. Zahn. 2001. Variability of the western Mediterranean Sea surface temperature during the last 25,000 years and its connection with the Northern Hemisphere climatic changes. Paleoceanography, Vol. 16, No. 1, p. 40 (2000PA000502) ABSTRACT: Sea Surface Temperature (SST) profiles over the last 25 kyr derived from alkenone measurements are studied in four cores from a W-E latitudinal transect encompassing the Gulf of Cadiz (Atlantic Ocean), the Alboran Sea, and the southern Tyrrhenian Sea (western Mediterranean). The results document the sensitivity of the Mediterranean region to the short climatic changes of the North Atlantic Ocean, particularly those involving the latitudinal position of the polar front. The amplitude of the SST oscillations increases toward the Tyrrhenian Sea, indicating an amplification effect of the Atlantic signal by the climatic regime of the Mediterranean region. All studied cores show a shorter cooling phase (700 years) for the Younger Dryas (YD) than that observed in the North Atlantic region (1200 years). This time diachroneity is related to an intra-YD climatic change documented in the European continent. Minor oscillations in the southward displacement of the North Atlantic polar front may also have driven this early warming in the studied area. During the Holocene a regional diachroneity propagating west to east is observed for the SST maxima, 11.5 - 10.2 kyr BP in the Gulf of Cadiz, 10 - 9 kyr BP in the Alboran Sea, and 8.9 - 8.4 ky BP in the Thyrrenian Sea. A general cooling trend from these SST maxima to present day is observed during this stage, which is marked by short cooling oscillations with a periodicity of 730 +/- 40 years and its harmonics. GEOGRAPHIC REGION: Western Mediterranean Sea PERIOD OF RECORD: 51 KYrBP - present FUNDING SOURCES: HOLOCENE Project (ENV4-CT97-0162) funded by the European Union, project MTPII-MATER (MAS3-CT96-0051), CICYT (AMB-95-1284-E, CLI-96-2261-E, CLI98-1002-CO2). Studies of core M39-008 also supported by Deutsche Forschungsgemeinschaft (Grant Za157/15-1 and -2). DESCRIPTION: The four cores studied are from similar latitude, located on a W-E latitudinal transect from the Gulf of Cadiz in the Atlantic Ocean to the southern Tyrrhenian Sea in the western Mediterranean. Core M39-008: 39°22.8'N, 7° 4.6'W, 576m water depth, core length 570 cm. Core MD95-2043: 36° 8.6'N, 2°37.3'W, 1841m water depth, core length 3600 cm. Core BS79-38: 38°24.7'N, 13°34.6'E, 1489m water depth, core length 515 cm. Core BS79-33: 38°15.7'N, 14° 1.8'E, 1282m water depth, core length 485 cm. SST calculated as Uk37 = 0.033SST + 0.044 Oxygen isotope measurements of G. bulloides were made on 25-30 specimens in 300-355um size range for cores MD95-2043, BS79-38, and BS79-33. For core M39-008, oxygen isotope measurements of G. bulloides were made on 9-11 specimens >250um size. DATA: 1. Alkenone/SST data 1a. Core MD952043 UK37/SST Depth Age Uk37 SST cm Cal.KyrBP °C 0 1.008 0.663 18.77 2 1.082 0.647 18.29 4 1.156 0.647 18.29 10 1.379 0.635 17.93 14 1.527 0.639 18.05 20 1.75 0.65 18.38 24 1.898 0.668 18.95 30 2.121 0.651 18.43 34 2.269 0.655 18.55 40 2.492 0.646 18.27 44 2.64 0.654 18.51 50 2.863 0.646 18.26 54 3.011 0.661 18.74 60 3.209 0.644 18.22 64 3.341 0.672 19.07 66 3.407 0.654 18.52 70 3.539 0.658 18.64 74 3.671 0.672 19.05 80 3.868 0.665 18.86 84 4 0.67 19 90 4.198 0.66 18.7 94 4.33 0.669 18.97 100 4.475 0.668 18.95 104 4.554 0.664 18.81 110 4.673 0.679 19.28 114 4.752 0.69 19.61 120 4.871 0.652 18.46 124 4.95 0.657 18.6 130 5.069 0.664 18.82 134 5.148 0.662 18.77 140 5.266 0.647 18.31 150 5.464 0.647 18.31 154 5.543 0.645 18.25 160 5.662 0.661 18.73 164 5.741 0.649 18.35 170 5.86 0.665 18.85 174 5.939 0.69 19.59 180 6.064 0.675 19.16 184 6.156 0.683 19.41 190 6.295 0.683 19.41 194 6.387 0.687 19.51 200 6.525 0.686 19.49 204 6.617 0.684 19.43 210 6.756 0.674 19.13 214 6.848 0.664 18.83 220 6.986 0.665 18.85 224 7.078 0.682 19.37 230 7.217 0.692 19.68 234 7.309 0.675 19.15 240 7.454 0.68 19.31 244 7.559 0.687 19.5 250 7.716 0.667 18.92 254 7.821 0.664 18.83 260 7.979 0.663 18.77 264 8.084 0.669 18.98 270 8.241 0.637 18 274 8.346 0.666 18.87 280 8.504 0.643 18.18 284 8.609 0.653 18.5 290 8.766 0.653 18.47 294 8.871 0.665 18.84 300 9.01 0.674 19.11 304 9.078 0.691 19.65 310 9.18 0.666 18.89 314 9.248 0.69 19.61 320 9.35 0.673 19.08 324 9.419 0.695 19.77 330 9.521 0.673 19.1 332 9.555 0.69 19.62 334 9.589 0.675 19.16 340 9.691 0.675 19.14 344 9.759 0.7 19.9 350 9.855 0.683 19.39 354 9.912 0.696 19.8 360 9.996 0.669 18.95 364 10.053 0.661 18.74 370 10.138 0.648 18.34 374 10.194 0.644 18.21 380 10.279 0.642 18.15 384 10.335 0.676 19.19 390 10.42 0.657 18.61 394 10.476 0.674 19.12 400 10.561 0.668 18.94 404 10.617 0.649 18.36 410 10.702 0.651 18.42 414 10.759 0.656 18.57 420 10.839 0.664 18.81 424 10.888 0.656 18.59 430 10.962 0.645 18.23 434 11.011 0.61 17.17 440 11.084 0.623 17.59 444 11.133 0.633 17.86 450 11.206 0.642 18.16 454 11.255 0.635 17.93 460 11.329 0.636 17.96 470 11.451 0.603 16.97 474 11.5 0.599 16.84 480 11.573 0.573 16.06 484 11.622 0.571 16.01 490 11.702 0.522 14.5 494 11.76 0.538 15 500 11.847 0.532 14.83 504 11.905 0.553 15.44 506 11.934 0.549 15.34 510 11.992 0.538 15 514 12.049 0.514 14.28 520 12.133 0.505 13.99 524 12.188 0.481 13.27 530 12.272 0.455 12.49 534 12.328 0.456 12.52 540 12.412 0.445 12.18 544 12.467 0.442 12.09 554 12.607 0.451 12.36 560 12.69 0.438 11.97 564 12.746 0.451 12.38 570 12.83 0.464 12.75 572 12.858 0.477 13.16 580 12.969 0.498 13.79 584 13.025 0.514 14.27 590 13.172 0.527 14.68 594 13.354 0.523 14.54 600 13.45 0.531 14.79 604 13.491 0.548 15.31 610 13.552 0.53 14.74 614 13.593 0.564 15.8 620 13.655 0.559 15.64 624 13.696 0.555 15.51 630 13.757 0.542 15.12 634 13.798 0.556 15.55 640 13.859 0.554 15.48 644 13.9 0.548 15.32 650 13.962 0.544 15.17 654 14.003 0.554 15.49 660 14.064 0.537 14.96 664 14.105 0.557 15.58 670 14.166 0.531 14.78 674 14.207 0.533 14.86 680 14.269 0.557 15.57 684 14.325 0.535 14.92 686 14.362 0.506 14.02 690 14.435 0.515 14.3 694 14.507 0.524 14.57 700 14.616 0.503 13.94 704 14.689 0.479 13.21 710 14.836 0.462 12.68 714 14.985 0.437 11.95 720 15.207 0.487 13.44 724 15.356 0.469 12.9 730 15.578 0.426 11.62 734 15.727 0.457 12.55 742 16.023 0.444 12.15 744 16.098 0.431 11.76 750 16.32 0.403 10.9 754 16.469 0.391 10.56 760 16.674 0.394 10.65 764 16.788 0.434 11.86 770 16.959 0.425 11.58 774 17.073 0.438 11.97 784 17.358 0.393 10.59 790 17.529 0.378 10.16 794 17.643 0.386 10.38 800 17.814 0.459 12.62 804 17.987 0.463 12.73 810 18.335 0.416 11.32 814 18.566 0.469 12.9 820 18.914 0.468 12.86 824 19.146 0.464 12.75 828 19.378 0.465 12.79 830 19.494 0.471 12.96 834 19.725 0.461 12.67 840 20.073 0.461 12.68 844 20.305 0.471 12.98 850 20.652 0.441 12.06 854 20.884 0.461 12.68 860 21.148 0.438 11.98 864 21.213 0.447 12.23 870 21.31 0.418 11.37 874 21.66 0.451 12.37 880 22.185 0.441 12.06 884 22.535 0.443 12.13 890 23.06 0.426 11.6 894 23.41 0.454 12.45 900 23.587 0.414 11.25 904 23.705 0.384 10.34 910 23.882 0.369 9.87 914 24 0.357 9.52 924 24.285 0.459 12.6 930 24.455 0.442 12.09 934 24.569 0.445 12.19 940 24.74 0.438 11.98 944 25.056 0.492 13.6 950 25.53 0.417 11.33 954 25.685 0.439 11.99 960 25.918 0.431 11.77 964 26.074 0.469 12.9 970 26.306 0.471 12.98 974 26.462 0.478 13.19 980 26.695 0.471 12.97 984 26.85 0.493 13.63 990 27.184 0.466 12.83 994 27.406 0.469 12.89 1000 27.74 0.516 14.33 1004 27.96 0.426 11.61 1010 28.29 0.401 10.85 1014 28.389 0.443 12.11 1020 28.537 0.493 13.64 1024 28.635 0.491 13.57 1030 28.783 0.477 13.14 1034 28.882 0.501 13.88 1040 29.03 0.454 12.44 1044 29.336 0.388 10.45 1050 29.794 0.372 9.97 1054 30.1 0.383 10.3 1060 30.393 0.405 10.97 1064 30.588 0.41 11.12 1070 30.88 0.389 10.47 1074 30.954 0.414 11.26 1080 31.066 0.441 12.06 1084 31.14 0.424 11.53 1090 31.285 0.461 12.67 1094 31.382 0.492 13.62 1100 31.528 0.446 12.22 1104 31.625 0.488 13.47 1110 31.77 0.494 13.66 1114 31.84 0.505 14.02 1120 31.945 0.522 14.52 1124 32.015 0.513 14.26 1130 32.12 0.547 15.27 1134 32.278 0.461 12.67 1140 32.515 0.488 13.5 1144 32.673 0.479 13.2 1150 32.91 0.452 12.4 1154 33.002 0.469 12.92 1160 33.139 0.502 13.91 1164 33.231 0.516 14.32 1170 33.368 0.51 14.14 1174 33.46 0.515 14.29 1180 33.799 0.441 12.06 1184 34.025 0.469 12.9 1190 34.364 0.44 12.04 1194 34.59 0.5 13.86 1200 34.685 0.502 13.9 1204 34.749 0.494 13.68 1210 34.844 0.488 13.5 1214 34.907 0.476 13.11 1220 35.003 0.498 13.79 1224 35.066 0.494 13.66 1230 35.161 0.473 13.04 1234 35.225 0.474 13.06 1240 35.32 0.427 11.62 1244 35.71 0.401 10.85 1250 36.17 0.464 12.75 1254 36.286 0.519 14.42 1260 36.461 0.496 13.74 1264 36.577 0.524 14.56 1270 36.751 0.506 14.04 1274 36.867 0.527 14.68 1280 37.042 0.548 15.3 1284 37.158 0.547 15.27 1290 37.332 0.525 14.61 1294 37.448 0.541 15.08 1300 37.623 0.506 14.03 1304 37.739 0.512 14.2 1310 37.913 0.509 14.11 1314 38.029 0.511 14.2 1320 38.204 0.508 14.08 1324 38.32 0.503 13.93 1330 38.602 0.418 11.38 1334 38.789 0.387 10.41 1340 39.071 0.384 10.34 1344 39.259 0.355 9.47 1354 39.728 0.395 10.66 1356 39.822 0.405 10.98 1360 40.01 0.473 13.03 1364 40.106 0.507 14.05 1370 40.25 0.483 13.33 1374 40.446 0.474 13.07 1380 40.74 0.5 13.84 1384 40.863 0.513 14.24 1390 41.047 0.495 13.7 1394 41.17 0.486 13.44 1400 41.329 0.468 12.88 1404 41.435 0.447 12.23 1411 41.621 0.486 13.44 1414 41.7 0.531 14.78 1420 41.832 0.513 14.24 1424 41.919 0.543 15.16 1430 42.051 0.509 14.12 1434 42.139 0.535 14.9 1440 42.271 0.504 13.96 1444 42.358 0.514 14.27 1450 42.49 0.505 14.01 1454 42.71 0.456 12.53 1458 42.906 0.448 12.28 1460 43.004 0.466 12.82 1464 43.2 0.509 14.12 1470 43.45 0.542 15.13 1474 43.616 0.583 16.37 1480 43.866 0.564 15.79 1490 44.282 0.573 16.06 1494 44.448 0.579 16.25 1500 44.698 0.546 15.25 1504 44.864 0.546 15.24 1510 45.114 0.523 14.54 1514 45.28 0.519 14.43 1520 45.568 0.436 11.91 1524 45.761 0.408 11.05 1530 46.049 0.385 10.36 1534 46.242 0.424 11.54 1540 46.53 0.472 13 1544 46.818 0.506 14.03 1550 47.25 0.49 13.56 1554 47.388 0.514 14.28 1560 47.595 0.524 14.58 1564 47.733 0.512 14.22 1570 47.94 0.519 14.43 1574 48.078 0.515 14.3 1580 48.285 0.512 14.2 1584 48.423 0.528 14.71 1590 48.63 0.527 14.67 1594 48.768 0.545 15.22 1600 48.975 0.543 15.15 1606 49.182 0.576 16.14 1610 49.32 0.544 15.19 1614 49.595 0.559 15.65 1620 50.007 0.555 15.51 1628 50.556 0.56 15.66 1630 50.694 0.552 15.43 1634 50.968 0.563 15.74 1640 51.381 0.578 16.2 1644 51.655 0.586 16.46 1648 51.93 0.592 16.63 1b. Core M39008 UK37/SST Depth Age Uk37 SST cm Cal.KyrBP °C 5 1.458 0.703 19.99 10 2.722 0.709 20.19 15 3.697 0.691 19.65 20 4.474 0.707 20.14 25 4.953 0.699 19.88 30 5.452 0.723 20.60 35 5.983 0.719 20.48 40 6.372 0.728 20.77 45 6.551 0.723 20.62 50 6.729 0.713 20.32 55 6.908 0.722 20.58 60 7.086 0.721 20.55 65 7.265 0.727 20.72 70 7.443 0.718 20.46 75 7.622 0.726 20.68 80 7.8 0.709 20.17 85 7.979 0.707 20.13 95 8.223 0.708 20.14 100 8.26 0.72 20.53 105 8.298 0.733 20.91 110 8.335 0.735 20.97 115 8.373 0.72 20.51 120 8.41 0.723 20.60 125 8.448 0.733 20.92 130 8.485 0.722 20.58 135 8.523 0.736 21.00 140 8.56 0.725 20.67 145 8.598 0.738 21.05 150 8.635 0.734 20.93 155 8.673 0.727 20.72 160 8.71 0.71 20.21 165 8.748 0.716 20.38 170 8.785 0.734 20.93 175 8.823 0.733 20.92 180 8.86 0.731 20.86 185 8.898 0.731 20.84 190 8.935 0.729 20.80 195 8.95 0.74 21.13 200 8.966 0.724 20.65 205 8.981 0.724 20.65 210 8.997 0.744 21.24 215 9.012 0.729 20.80 225 9.043 0.729 20.79 230 9.059 0.73 20.81 235 9.074 0.745 21.28 240 9.09 0.737 21.04 245 9.105 0.744 21.25 250 9.121 0.756 21.60 255 9.136 0.749 21.39 260 9.151 0.74 21.11 265 9.167 0.751 21.45 270 9.182 0.747 21.32 275 9.198 0.753 21.52 280 9.213 0.729 20.80 285 9.229 0.727 20.73 290 9.277 0.742 21.17 295 9.375 0.73 20.81 300 9.473 0.728 20.77 305 9.571 0.728 20.76 310 9.669 0.728 20.77 315 9.767 0.721 20.55 320 9.865 0.743 21.20 325 9.963 0.718 20.45 330 10.061 0.691 19.63 335 10.159 0.731 20.82 340 10.257 0.741 21.16 345 10.355 0.745 21.28 350 10.453 0.77 22.03 355 10.551 0.761 21.76 360 10.7 0.745 21.28 365 10.924 0.746 21.31 370 11.148 0.735 20.96 375 11.372 0.747 21.35 380 11.596 0.717 20.44 385 11.82 0.678 19.23 390 12.044 0.671 19.02 395 12.268 0.611 17.21 400 12.492 0.637 17.99 405 12.754 0.538 15.00 410 13.074 0.676 19.18 415 13.393 0.675 19.16 420 13.713 0.659 18.67 425 14.033 0.663 18.79 430 14.353 0.658 18.65 435 14.672 0.646 18.28 440 14.992 0.672 19.07 445 15.312 0.677 19.23 450 15.631 0.669 18.97 455 15.951 0.663 18.80 460 16.203 0.531 14.78 470 16.505 0.587 16.47 475 16.656 0.54 15.05 480 16.807 0.547 15.26 485 16.958 0.534 14.89 495 17.259 0.544 15.19 500 17.41 0.532 14.82 505 17.561 0.526 14.64 515 17.863 0.514 14.26 520 18.013 0.549 15.33 525 18.164 0.589 16.53 530 18.37 0.591 16.61 535 18.792 0.618 17.43 540 19.215 0.582 16.32 545 19.637 0.588 16.53 550 20.06 0.591 16.61 555 20.482 0.59 16.58 560 20.905 0.575 16.13 565 21.328 0.574 16.10 1c. Core BS7938 UK37/SST Depth Age Uk37 SST cm Cal.KyrBP °C 5 0.867 0.6 16.87 10 1.127 0.54 15.06 20 1.647 0.54 15.06 25 1.906 0.576 16.16 30 2.166 0.596 16.76 35 2.426 0.625 17.65 45 2.946 0.588 16.51 50 3.206 0.605 17.03 55 3.465 0.656 18.56 65 3.985 0.63 17.79 70 4.201 0.641 18.12 75 4.417 0.643 18.19 85 4.849 0.645 18.26 95 5.281 0.646 18.26 104 5.669 0.597 16.8 110 5.928 0.551 15.38 115 6.144 0.572 16.03 125 6.576 0.667 18.9 130 6.792 0.644 18.22 135 7.008 0.655 18.55 145 7.44 0.646 18.28 152 7.721 0.674 19.11 155 7.819 0.675 19.16 165 8.146 0.652 18.46 170 8.309 0.664 18.82 175 8.472 0.718 20.47 185 8.799 0.693 19.71 190 8.962 0.646 18.27 195 9.125 0.66 18.69 205 9.452 0.579 16.25 210 9.615 0.67 19 215 9.871 0.598 16.81 225 10.382 0.664 18.82 230 10.637 0.634 17.89 235 10.893 0.602 16.95 245 11.342 0.52 14.45 250 11.558 0.483 13.34 255 11.775 0.571 16.01 265 12.208 0.45 12.33 272 12.512 0.407 11.03 275 12.642 0.468 12.87 285 13.086 0.508 14.1 290 13.321 0.519 14.44 295 13.556 0.518 14.39 305 14.026 0.462 12.71 310 14.262 0.497 13.75 315 14.497 0.511 14.17 325 14.967 0.475 13.09 330 15.202 0.52 14.46 335 15.399 0.58 16.29 345 15.68 0.445 12.18 350 15.82 0.494 13.68 355 15.961 0.493 13.63 365 16.242 0.444 12.14 375 16.523 0.395 10.68 380 16.663 0.423 11.53 385 16.803 0.414 11.26 395 17.084 0.41 11.12 405 17.365 0.438 11.96 410 17.719 0.451 12.36 415 18.073 0.438 11.98 425 18.781 0.43 11.73 430 19.135 0.425 11.58 455 20.906 0.428 11.67 460 21.26 0.412 11.18 470 21.968 0.42 11.43 475 22.322 0.41 11.12 480 22.676 0.388 10.46 495 23.738 0.352 9.35 500 24.092 0.515 14.31 506 24.517 0.546 15.24 1d. Core BS7933 UK37/SST Depth Age Uk37 SST cm Cal.KyrBP °C 10 0.86 0.589 16.53 20 1.22 0.623 17.57 30 1.57 0.627 17.69 40 1.93 0.664 18.83 50 2.28 0.630 17.80 55 2.46 0.636 17.98 70 2.99 0.708 20.16 75 3.17 0.730 20.83 80 3.35 0.657 18.60 96 3.91 100 4.31 0.667 18.91 110 5.93 0.707 20.12 120 7.66 0.734 20.93 125 7.96 0.691 19.65 130 8.26 0.663 18.79 145 9.26 0.685 19.45 155 9.89 0.701 19.94 165 10.44 0.672 19.06 175 11.00 0.623 17.58 185 12.23 0.651 18.42 190 12.41 0.475 13.08 200 12.79 0.495 13.69 210 13.34 0.618 17.42 215 13.68 0.524 14.59 225 14.34 0.555 15.53 240 14.97 0.474 13.07 245 15.18 0.503 13.94 265 16.24 0.529 14.73 285 17.36 0.513 14.25 290 17.64 0.514 14.28 310 18.50 0.486 13.44 330 19.27 0.459 12.62 335 19.46 0.365 9.76 355 21.39 0.437 11.94 365 22.28 0.398 10.77 385 23.53 0.315 8.24 390 23.85 0.325 8.56 410 25.10 0.473 13.04 430 26.35 0.523 14.56 435 26.67 0.361 9.64 465 28.55 0.387 10.42 480 29.49 0.385 10.35 2. G. bulloides d18O 2a. Core MD95-2043 G. bull. d18O Depth Cal.Age d18O cm KyrBP permil 0 1.01 0.90 10 1.38 0.83 20 1.75 0.84 30 2.12 1.00 40 2.49 1.13 50 2.86 1.07 60 3.21 0.82 70 3.54 1.08 80 3.87 0.77 90 4.20 0.86 104 4.55 1.03 110 4.67 0.94 120 4.87 0.70 130 5.07 1.00 140 5.27 0.74 150 5.46 0.94 160 5.66 0.84 170 5.86 0.81 180 6.06 0.84 194 6.39 0.80 200 6.53 0.96 210 6.76 1.10 220 6.99 0.80 230 7.22 0.85 240 7.45 0.81 250 7.72 0.96 260 7.98 0.56 270 8.24 0.57 280 8.50 0.75 290 8.77 0.68 300 9.01 0.85 310 9.18 0.80 320 9.35 0.87 322 9.38 0.71 330 9.52 0.94 340 9.69 0.85 350 9.86 0.91 360 10.00 0.99 370 10.14 1.01 380 10.28 1.17 388 10.39 1.29 390 10.42 1.26 400 10.56 1.26 410 10.70 1.44 420 10.84 1.30 430 10.96 1.44 440 11.08 1.62 450 11.21 1.56 460 11.33 1.76 466 11.40 1.76 470 11.45 1.58 480 11.57 1.73 490 11.70 1.82 500 11.85 2.02 510 11.99 1.98 520 12.13 2.19 530 12.27 1.92 540 12.41 2.11 550 12.55 2.10 560 12.69 2.15 570 12.83 2.00 580 12.97 1.94 590 13.17 1.83 600 13.45 1.76 610 13.55 1.72 620 13.66 1.87 630 13.76 1.83 640 13.86 1.85 650 13.96 2.05 660 14.06 1.85 670 14.17 1.79 680 14.27 2.04 690 14.44 1.85 700 14.62 2.03 710 14.84 2.39 720 15.21 2.39 730 15.58 2.55 738 15.88 2.23 750 16.32 2.40 760 16.67 3.04 772 17.02 3.17 780 17.24 2.96 790 17.53 3.13 798 17.76 3.47 800 17.81 3.26 810 18.34 3.58 820 18.91 3.46 830 19.49 3.44 840 20.07 3.25 850 20.65 3.41 860 21.15 3.26 870 21.31 3.58 880 22.19 3.20 882 22.36 3.29 890 23.06 3.20 900 23.59 2.92 910 23.88 3.03 916 24.06 2.77 920 24.17 2.68 930 24.46 3.31 940 24.74 3.34 950 25.53 3.44 960 25.92 3.14 970 26.31 3.14 980 26.70 1.05 990 27.18 2.50 1020 28.54 2.40 1026 28.69 2.30 1030 28.78 2.41 1040 29.03 2.79 1050 29.79 2.72 1070 30.88 2.81 1080 31.07 3.08 1090 31.29 3.32 1100 31.53 3.20 1110 31.77 2.53 1120 31.95 2.46 1130 32.12 2.39 1140 32.52 2.29 1152 32.96 2.76 1160 33.14 2.65 1170 33.37 2.45 1180 33.80 2.52 1190 34.36 2.66 1200 34.69 2.71 1210 34.84 2.33 1220 35.00 2.49 1230 35.16 1.71 1240 35.32 3.04 1290 37.33 2.21 1302 37.68 2.30 1310 37.91 2.24 1320 38.20 2.41 1330 38.60 3.15 1340 39.07 2.19 1360 40.01 2.68 1370 40.25 2.80 1380 40.74 2.61 1390 41.05 2.65 1400 41.33 2.36 1405 41.46 2.73 1409 41.57 2.30 1420 41.83 2.36 1430 42.05 2.11 1440 42.27 2.01 1448 42.45 2.20 1460 43.00 2.88 1470 43.45 2.56 1480 43.87 2.18 1490 44.28 1.90 1492 44.37 2.23 1500 44.70 2.12 1510 45.11 1.93 1520 45.57 2.28 1530 46.05 2.85 1540 46.53 2.69 1550 47.25 2.65 1560 47.60 2.33 1570 47.94 2.29 1580 48.29 2.70 1581 48.32 2.61 1590 48.63 2.58 1600 48.98 2.27 1610 49.32 2.57 1620 50.01 2.54 1630 50.69 2.49 1640 51.38 2.35 2b. Core M39008 G. bull. d18O Depth Cal.Age d18O cm KyrBP permil 0 0.00 0.03 3 0.87 0.22 8 2.33 0.61 13 3.31 0.52 18 4.28 0.47 23 4.76 0.49 28 5.24 0.41 33 5.77 0.25 38 6.30 0.31 43 6.48 0.21 48 6.66 -0.03 53 6.84 0.14 58 7.01 0.12 68 7.37 -0.01 88 8.09 0.35 93 8.21 0.06 98 8.25 0.14 103 8.28 -0.04 107 8.31 -0.06 112 8.35 -0.14 117 8.39 0.00 122 8.43 0.15 127 8.46 0.03 132 8.50 0.09 137 8.54 0.20 142 8.58 0.37 147 8.61 0.22 152 8.65 0.40 157 8.69 0.37 162 8.73 0.27 167 8.76 0.26 172 8.80 0.44 177 8.84 0.12 182 8.88 0.26 187 8.91 0.20 192 8.94 0.02 197 8.96 0.08 203 8.98 0.04 208 8.99 0.04 213 9.01 -0.03 218 9.02 0.30 223 9.04 0.11 228 9.05 0.42 233 9.07 -0.22 238 9.08 0.23 243 9.10 0.08 248 9.11 -0.16 253 9.13 -0.04 258 9.15 0.35 263 9.16 0.02 265 9.17 0.31 268 9.18 0.18 273 9.19 0.04 278 9.21 -0.22 283 9.22 -0.33 288 9.24 0.09 293 9.34 0.20 298 9.43 0.14 303 9.53 0.29 307 9.61 0.36 312 9.71 0.50 317 9.81 0.47 322 9.90 0.40 327 10.00 0.07 332 10.10 -0.25 337 10.20 0.24 342 10.30 0.37 347 10.39 0.08 352 10.49 0.29 357 10.59 0.85 362 10.79 1.00 367 11.01 1.15 372 11.24 0.76 377 11.46 1.02 382 11.69 1.11 387 11.91 1.60 392 12.13 1.69 397 12.36 1.51 403 12.63 1.52 408 12.95 1.32 413 13.27 0.99 418 13.59 0.75 423 13.90 0.84 428 14.22 1.16 433 14.54 1.14 438 14.86 0.57 443 15.18 1.58 448 15.50 1.50 453 15.82 1.77 458 16.14 1.68 463 16.29 2.06 473 16.60 2.50 478 16.75 2.55 483 16.90 2.15 488 17.05 2.55 493 17.20 2.45 498 17.35 2.31 503 17.50 2.44 507 17.62 2.32 512 17.77 2.73 517 17.92 2.50 522 18.07 2.44 527 18.22 1.95 532 18.54 1.71 537 18.96 1.97 542 19.38 1.68 547 19.81 2.19 552 20.23 2.01 557 20.65 2.00 562 21.07 1.80 567 21.50 1.92 2c. Core BS7938 d18O G. bull. d18O Depth Cal.Age d18O cm KyrBP permil 5 0.87 0.91 10 1.13 1.1 15 1.39 1.06 20 1.65 0.99 25 1.91 0.89 30 2.17 0.93 35 2.43 0.81 40 2.69 1.08 45 2.95 0.91 50 3.21 0.94 55 3.47 0.97 60 3.73 1.09 65 3.99 0.86 70 4.20 0.92 75 4.42 0.83 80 4.63 0.86 85 4.85 0.8 90 5.06 0.85 95 5.28 0.93 100 5.50 0.91 122 6.45 0.88 125 6.58 0.98 130 6.79 0.92 135 7.01 0.82 140 7.22 1.13 145 7.44 0.95 150 7.64 1.22 155 7.82 0.88 160 7.98 0.97 165 8.15 0.7 170 8.31 0.33 175 8.47 0.65 180 8.64 0.88 185 8.80 0.71 190 8.96 0.69 195 9.13 0.69 200 9.29 0.79 205 9.45 0.53 210 9.62 0.63 215 9.87 0.52 220 10.13 1 225 10.38 1.04 230 10.64 1.33 235 10.89 1.26 240 11.12 1.77 245 11.34 1.67 255 11.78 2.01 260 11.99 2.58 265 12.21 2.6 272 12.51 2.69 275 12.64 2.68 280 12.86 2.69 285 13.09 2.42 290 13.32 2.57 295 13.56 2.5 299 13.74 2.3 305 14.03 2.29 310 14.26 2.42 315 14.50 2.6 320 14.73 3.04 325 14.97 3.22 330 15.20 3.08 335 15.40 2.92 345 15.68 2.98 350 15.82 3 355 15.96 2.68 360 16.10 2.82 365 16.24 3.17 370 16.38 3.43 375 16.52 3.89 380 16.66 3.69 405 17.37 3.85 420 18.43 3.09 440 19.84 3.56 445 20.20 3.94 455 20.91 3.82 460 21.26 3.86 465 21.61 3.67 470 21.97 3.59 475 22.32 3.77 480 22.68 3.82 485 23.03 3.57 490 23.38 3.6 495 23.74 3.57 500 24.09 3.56 2d. Core BS7933 G. bull. d18O Depth Cal.Age d18O cm KyrBP permil 5 0.68 0.66 10 0.86 0.61 15 1.04 1.21 20 1.22 0.77 25 1.39 0.79 30 1.57 0.55 35 1.75 0.72 40 1.93 1.82 45 2.10 1.07 50 2.28 1.06 55 2.46 0.97 59 2.60 1.02 65 2.81 1.03 70 2.99 1.04 75 3.17 0.99 80 3.35 1.15 85 3.52 1.11 91 3.74 0.64 96 3.91 0.96 100 4.31 0.95 105 5.12 0.99 110 5.93 0.77 115 6.75 1.08 120 7.66 0.68 125 7.96 0.56 130 8.26 0.8 136 8.62 0.81 140 8.90 0.92 145 9.26 0.7 150 9.62 1.13 155 9.89 0.79 160 10.17 1.17 165 10.44 1.42 170 10.72 1.49 175 11.00 2.08 180 11.61 2.01 185 12.23 2.53 190 12.41 2.54 195 12.60 2.78 200 12.79 2.59 205 13.01 2.45 210 13.34 2.45 215 13.68 2.32 220 14.01 2.38 225 14.34 2.3 230 14.55 2.76 235 14.76 3.18 240 14.97 2.97 245 15.18 2.85 250 15.40 2.78 255 15.68 2.8 260 15.96 2.84 265 16.24 2.91 270 16.52 3.46 275 16.80 3.54 280 17.08 3.61 285 17.36 3.63 290 17.64 3.91 295 17.92 3.71 300 18.11 3.6 305 18.30 3.61 310 18.50 3.67 315 18.69 3.65 320 18.88 3.69 325 19.08 3.71 330 19.27 3.68 335 19.46 3.52 340 19.66 3.78 345 20.23 3.72 350 20.81 3.67 355 21.39 3.58 360 21.97 3.61 365 22.28 3.47 370 22.59 3.62 375 22.91 3.65 380 23.22 3.7 385 23.53 3.72 390 23.85 3.65 395 24.16 3.46 400 24.47 3.38 404 24.73 3.58 410 25.10 3.54 415 25.41 3.54 420 25.73 3.64 425 26.04 3.68 430 26.35 3.86 435 26.67 3.69 440 26.98 3.5 445 27.29 3.47 450 27.61 3.15 455 27.92 3.35 460 28.23 3.75 465 28.55 3.13 471 28.92 3.3 473 29.05 3.49 475 29.17 3.24 480 29.49 3.7 3. Ice Rafted Debris, Core M39008 Depth Age(KYr) IRD(>250 µm) 367 11.0132 0 372 11.2372 0 377 11.4612 0 382 11.6852 0 387 11.9092 0 392 12.1332 0 397 12.3572 0 403 12.626 0 408 12.945727 0 413 13.265455 0 418 13.585182 0 423 13.904909 0 428 14.224636 0.0182 433 14.544364 0.0386 438 14.864091 0.0416 443 15.183818 0.0761 448 15.503545 0.0954 453 15.823273 0.1818 458 16.143 0.3327 463 16.293845 0.6467 468 16.44469 0.397 473 16.595535 0 478 16.74638 0 483 16.897225 0 488 17.04807 0 493 17.198915 0 498 17.349761 0 503 17.500606 0 507 17.621282 0 512 17.772127 0 517 17.922972 0 522 18.073817 0 527 18.224662 0 532 18.538543 0 537 18.961114 0 542 19.383686 0 547 19.806257 0 552 20.228829 0 557 20.6514 0 562 21.073971 0 567 0