Subantarctic Foraminiferal Mg/Ca Data and SST Reconstruction --------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program --------------------------------------------------------------------- NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!! NAME OF DATA SET: Subantarctic Foraminiferal Mg/Ca Data and SST Reconstruction LAST UPDATE: 3/2001 (Original Receipt by WDCA Paleo) CONTRIBUTOR: David Lea, University of California-Santa Barbara IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2001-022 SUGGESTED DATA CITATION: Mashiotta, T. A., et al., 2001, Subantarctic Foraminiferal Mg/Ca Data and SST Reconstruction, IGBP PAGES/World Data Center A for Paleoclimatology Data Contribution Series #2001-022. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Mashiotta, T. A., D.W. Lea, and H.J. Spero, 1999. Glacial-interglacial changes in Subantarctic sea surface temperature and d18O-water using foraminiferal Mg. Earth Planet. Sci. Lett. 170, 417-432. FUNDING SOURCES: National Science Foundation (USA), National Oceanic and Atmospheric Administration (USA). GEOGRAPHIC REGION: Southern Ocean PERIOD OF RECORD: 290 KYrBp-present DESCRIPTION: Globigerina bulloides Mg/Ca as a paleotemperature proxy. Indicated glacial-interglacial changes in sea surface temperature (SST) are about 4°C cooler in the Subantarctic Indian Ocean and 2.5°C cooler in the Subantarctic Pacific. Mg/Ca-based SST estimates and d18O determinations are then used to generate site-specific seawater d18O records. File RC11-120.txt Core RC11-120 43°31'S 79°52'E 3135m water depth Variables and units: Depth (cm), Age (ky), G. bulloides O18 (PDB), Mg/Ca (mmol/mol), SST (°C), O18w (SMOW) Data precision: Mg/Ca, ±2.1%; SST (est.), ±0.8°C; O18w (est.), ±0.2" G. bulloides O18 interpolated from Hays et al., 1976 and Imbrie et al., 1992, Mg/Ca data on cleaned G. bulloides shells by ICP-MS, SST estimates based on eq. (5) in Mashiotta et al., 1999, O18w calculated from bulloides O18 data, Mg/Ca-temperature estimates and Shackleton, 1974 paleo-temperature equation. chrono-strat info: SPECMAP age model from Imbrie et al, 1992 File E11-2.txt Core E11-2 56°04'S 115°05'W 3094m water depth Variables and units: Depth (cm), Age (ky), N. pachyderma (s) O18 (PDB), Mg/Ca (mmol/mol), SST (°C), O18w (SMOW) Data precision: Mg/Ca, ±2.1%; SST (est.), ±1°C; O18w (est.), ±0.2" N. pachyderma (s) O18 interpolated from Ninnemann and Charles, 1997, Mg/Ca data on cleaned N. pachyderma (s) shells by ICP-MS, SST estimates based on eq. (6) in Mashiotta et al., 1999, O18w calculated from pachyderma O18 data, Mg/Ca-temperature estimates and Shackleton, 1974 paleo-temperature equation. chrono-strat info: calendar age model from Ninnemann and Charles, 1997 DATA: File E11-2.txt Depth (cm) Age (ky) pachyO18 (PDB) Mg/Ca (m) SST (°C) O18w (SMOW) 11.0 8.11 #N/A 0.583 4.4 #N/A 27.5 10.18 2.51 0.576 4.2 -0.33 38.5 11.56 2.59 0.639 5.5 0.07 49.5 12.94 2.80 0.623 5.2 0.20 58.5 14.05 3.00 0.607 4.9 0.32 70.5 15.53 3.16 0.591 4.5 0.40 80.5 16.73 3.23 0.550 3.7 0.23 91.5 18.00 3.83 0.508 2.7 0.57 102.5 18.99 3.79 0.476 1.9 0.33 110.5 19.55 3.76 0.512 2.8 0.53 121.5 20.20 3.83 0.468 1.7 0.30 131.5 20.74 3.79 0.553 3.7 0.81 142.5 21.32 3.68 0.484 2.1 0.27 150.5 21.74 3.56 0.501 2.5 0.26 161.5 22.33 3.44 0.503 2.6 0.16 170.5 22.83 3.51 0.569 4.1 0.63 180.5 23.40 3.50 0.517 2.9 0.31 190.5 24.00 3.47 0.529 3.2 0.35 201.5 24.69 3.51 0.511 2.8 0.27 212.5 25.40 3.52 0.495 2.4 0.18 222.5 25.89 3.61 0.498 2.5 0.30 231.5 26.57 3.55 0.503 2.6 0.26 241.5 27.38 3.47 0.559 3.9 0.53 251.5 28.08 3.43 0.529 3.2 0.31 262.5 28.87 3.34 0.522 3.0 0.18 272.5 29.61 3.46 0.455 1.4 -0.16 282.5 30.36 3.42 0.526 3.1 0.28 291.5 31.09 3.50 0.520 3.0 0.32 302.5 32.07 3.33 0.530 3.2 0.22 312.5 33.06 3.39 0.518 3.0 0.20 321.5 34.16 3.38 0.527 3.1 0.24 332.5 35.69 3.30 0.527 3.2 0.17 342.5 37.00 3.29 0.534 3.3 0.20 351.5 37.90 3.39 0.518 2.9 0.20 361.5 38.48 3.43 0.533 3.3 0.33 371.5 38.98 3.42 0.510 2.8 0.18 381.5 39.50 3.36 0.524 3.1 0.20 390.5 39.99 3.40 0.500 2.5 0.09 401.5 40.60 3.42 0.512 2.8 0.19 411.5 41.17 3.27 0.516 2.9 0.07 421.5 41.77 3.29 0.476 1.9 -0.18 431.5 42.40 3.11 0.528 3.2 -0.01 441.5 43.04 3.19 0.540 3.5 0.14 450.5 43.64 3.26 0.513 2.8 0.03 460.5 44.34 3.31 0.506 2.7 0.04 470.5 45.17 3.12 0.506 2.7 -0.15 480.5 46.20 3.15 0.542 3.5 0.11 492.5 47.58 3.20 0.514 2.9 -0.01 502.5 48.76 3.13 0.487 2.2 -0.26 512.5 49.92 3.08 0.583 4.4 0.28 522.5 51.04 2.98 0.559 3.9 0.04 531.5 52.01 3.00 0.551 3.7 0.02 541.5 52.95 3.08 0.575 4.2 0.22 551.5 53.81 3.04 0.508 2.7 -0.22 561.5 54.46 3.03 0.539 3.4 -0.03 571.5 55.03 3.23 0.519 3.0 0.04 581.5 55.56 3.12 0.525 3.1 -0.03 591.5 56.12 3.22 0.596 4.6 0.49 611.5 57.76 3.03 0.566 4.0 0.13 621.5 58.92 3.11 0.581 4.3 0.29 631.5 59.93 3.27 0.562 3.9 0.35 641.5 60.22 3.43 0.575 4.2 0.58 651.5 61.07 3.40 0.533 3.3 0.30 671.5 62.89 3.45 0.554 3.8 0.48 681.5 63.76 3.46 0.538 3.4 0.40 691.5 64.58 3.56 0.534 3.3 0.47 701.5 65.37 3.35 0.554 3.8 0.38 711.5 66.13 3.51 0.502 2.6 0.21 721.5 66.88 3.55 0.511 2.8 0.32 732.5 67.67 3.43 0.571 4.1 0.55 741.5 68.27 3.27 0.523 3.1 0.11 751.5 68.89 3.23 0.567 4.0 0.33 761.5 69.48 3.11 0.561 3.9 0.18 771.5 70.07 2.90 0.607 4.9 0.22 790.5 71.22 3.00 0.551 3.7 0.01 802.5 72.01 2.82 0.577 4.2 -0.02 812.5 72.71 2.68 0.595 4.6 -0.06 821.5 73.35 2.72 0.556 3.8 -0.24 831.5 74.05 2.90 0.550 3.7 -0.10 842.5 74.76 2.89 0.560 3.9 -0.05 852.5 75.35 2.78 0.583 4.4 -0.03 862.5 75.90 2.79 0.537 3.4 -0.28 872.5 76.41 2.83 0.587 4.4 0.05 881.5 76.86 2.76 0.548 3.6 -0.25 892.5 77.45 2.71 0.579 4.3 -0.12 902.5 78.06 2.69 0.616 5.0 0.05 912.5 78.78 2.63 0.630 5.3 0.07 922.5 79.62 2.66 0.629 5.3 0.10 932.5 80.59 2.67 0.608 4.9 0.00 942.5 81.65 2.60 0.629 5.3 0.03 952.5 82.77 2.62 0.666 6.0 0.23 962.5 83.91 2.78 0.603 4.8 0.08 972.5 85.02 2.91 0.558 3.8 -0.04 982.5 86.08 2.93 0.561 3.9 0.00 992.5 87.11 2.92 0.537 3.4 -0.15 1002.5 88.14 2.66 0.535 3.3 -0.42 1012.5 89.16 2.69 0.532 3.3 -0.42 1022.5 90.18 2.68 0.574 4.2 -0.18 1032.5 91.22 2.52 0.610 4.9 -0.14 1042.5 92.29 2.47 0.574 4.2 -0.38 1052.5 93.41 2.48 0.574 4.2 -0.38 1062.5 94.65 2.46 0.562 3.9 -0.46 1072.5 96.03 2.44 0.582 4.4 -0.37 1082.5 97.52 2.47 0.579 4.3 -0.36 1092.5 99.12 2.51 0.596 4.6 -0.23 1102.5 100.81 2.56 0.577 4.2 -0.28 1112.5 102.58 2.61 0.545 3.6 -0.41 1123.5 104.59 2.69 0.553 3.7 -0.29 1132.5 106.32 2.61 0.592 4.6 -0.15 1143.5 108.45 #N/A 0.590 4.5 #N/A File RC11-120.txt: Depth (cm) Age (ky) bullO18 (PDB) Mg/Ca (m) SST (°C) O18w (SMOW) 10 2.7 1.96 1.64 11.6 0.99 15 4 1.97 1.65 11.7 1.01 20 5.3 1.96 1.51 10.8 0.8 25 6.6 2.16 1.56 11.2 1.08 45 11 2.74 1.66 11.7 1.79 57 13.3 3.12 1.26 9.1 1.53 65 15.9 3.28 1 6.9 1.14 76 19 3.34 1.15 8.3 1.55 85 21.1 3.43 1.05 7.5 1.43 97 24.1 3.3 1.25 9.1 1.71 103.5 25.6 3.31 1 7 1.19 111.5 28.2 3.18 1.08 7.7 1.22 121.5 31.6 3.05 1.12 8.1 1.2 131.5 34.9 3.12 1.11 7.9 1.24 141.5 38.3 3.07 1.04 7.4 1.04 148.5 40.7 3.03 1.11 8 1.15 161.5 45.1 2.95 1.12 8.1 1.11 171.5 48.4 2.93 1.22 8.8 1.27 181.5 51.8 2.83 1.18 8.5 1.09 191.5 54.3 2.86 1.03 7.3 0.81 201.5 56.3 2.82 1.24 9 1.19 211.5 58.3 2.95 1.11 7.9 1.06 218.5 61.1 2.98 1.04 7.4 0.96 228.5 65.8 2.93 1.11 8 1.06 238.5 68.2 2.89 1.15 8.3 1.09 248.5 70.6 2.74 1.23 8.9 1.11 261.5 73.6 2.54 1.25 9.1 0.95 271.5 75.8 2.55 1.27 9.2 0.98 281.5 78.1 2.43 1.42 10.2 1.12 292.5 80.8 2.39 1.47 10.6 1.16 297.5 82.4 2.56 1.39 10.1 1.21 311.5 86.9 2.65 1.25 9.1 1.06 318.5 89.2 2.65 1.3 9.5 1.15 328.5 92.4 2.58 1.33 9.6 1.13 338.5 95.5 2.5 1.46 10.5 1.26 347.5 98 2.45 1.4 10.1 1.11 358.5 101 2.46 1.36 9.8 1.05 368.5 103.8 2.47 1.44 10.4 1.19 378.5 106.6 2.57 1.23 8.9 0.94 388.5 110.2 2.58 1.26 9.1 0.99 401.5 115.1 2.27 1.29 9.3 0.74 411.5 118.8 2.11 1.35 9.8 0.7 422.5 122.8 1.84 1.47 10.6 0.61 428.5 124.6 1.87 1.54 11 0.76 439.5 127.7 2.49 1.43 10.3 1.19 448.5 130 3.07 1.31 9.5 1.58 458.5 132.3 3.37 1.21 8.8 1.69 468.5 134.6 3.47 1.09 7.8 1.56 481.5 139.2 3.39 1.08 7.7 1.44 490.5 142.6 3.1 1.05 7.4 1.09 498.5 145.5 3.31 1.09 7.8 1.39 508.5 149.2 3.21 1.02 7.2 1.13 518.5 152.9 3.23 1.05 7.4 1.22 528.5 156.6 3.23 1.17 8.4 1.48 538.5 160.3 3.23 1.08 7.7 1.28 548.5 164 3.27 1.07 7.6 1.3 558.5 167.7 3.19 1.11 8 1.32 568.5 171.4 3.08 1.17 8.4 1.32 578.5 175.1 2.91 1.02 7.2 0.83 588.5 178.8 2.83 1.16 8.4 1.06 596.5 181.7 2.87 1.38 10 1.5 608.5 185.1 2.77 1.12 8.1 0.92 618.5 187.5 2.6 1.28 9.3 1.06 632.5 191 2.38 1.04 7.4 0.35 642.5 193.4 2.18 1.27 9.2 0.61 651.5 198.8 2.22 1.35 9.8 0.81 658.5 203.9 2.49 1.47 10.6 1.26 671.5 213.4 2.35 1.45 10.4 1.1 681.5 217.7 2.29 1.53 10.9 1.15 688.5 219.4 2.21 1.49 10.7 1.02 711.5 225.2 2.62 1.4 10.1 1.28 723.5 228.3 2.85 1.32 9.6 1.39 731.5 230.4 2.73 1.51 10.9 1.57 741.5 233.1 2.68 1.25 9.1 1.08 754.5 236.6 2.45 1.41 10.2 1.12 761.5 238.4 2.51 1.45 10.4 1.25 771.5 240.8 2.46 1.53 11 1.33 781.5 243.3 2.7 1.5 10.7 1.51 791.5 245.5 2.91 1.57 11.2 1.84 798.5 247.1 2.95 1.38 10 1.58 811.5 250.5 2.97 1.3 9.5 1.47 822.5 254.8 2.93 1.15 8.3 1.14 831.5 258.2 2.86 1.18 8.5 1.13 837.5 260.5 2.98 1.27 9.2 1.41 861.5 269.2 2.61 1.17 8.5 0.87 868.5 271.2 2.49 1.15 8.3 0.7 878.5 273.9 2.65 1.22 8.8 0.99 883.5 275.2 2.73 1.1 7.9 0.83 923.5 285.9 2.47 1.27 9.2 0.91 931.5 288.1 2.45 1.35 9.8 1.03 941.5 290.7 2.67 1.39 10.1 1.32 952.5 293.7 #N/A 1.28 9.3 #N/A