EPICA Dome C 217KYr Lead Isotope and Barium Data ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!! NAME OF DATA SET: EPICA Dome C 217KYr Lead Isotope and Barium Data LAST UPDATE: 8/2011 (Original receipt by WDC Paleo) CONTRIBUTORS: Vallelonga, P., P. Gabrielli, E. Balliana, A. Wegner, B. Delmonte, C. Turetta, G. Burton, F. Vanhaecke, K.J.R. Rosman, S. Hong, C.F. Boutron, P. Cescon, and C. Barbante IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2011-114 WDC PALEO CONTRIBUTION SERIES CITATION: Vallelonga, P., et al. 2011. EPICA Dome C 217KYr Lead Isotope and Barium Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2011-114. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Vallelonga, P., P. Gabrielli, E. Balliana, A. Wegner, B. Delmonte, C. Turetta, G. Burton, F. Vanhaecke, K.J.R. Rosman, S. Hong, C.F. Boutron, P. Cescon, and C. Barbante. 2010. Lead isotopic compositions in the EPICA Dome C ice core and Southern Hemisphere Potential Source Areas. Quaternary Science Reviews, Vol. 29, Issues 1-2, pp. 247-255, January 2010. doi:10.1016/j.quascirev.2009.06.019 (EPICA publication no. 226) ABSTRACT: A record of Pb isotopic compositions and Pb and Ba concentrations are presented for the EPICA Dome C ice core covering the past 220 ky, indicating the characteristics of dust and volcanic Pb deposition in central East Antarctica. Lead isotopic compositions are also reported in a suite of soil and loess samples from the Southern Hemisphere (Australia, Southern Africa, Southern South America, New Zealand, Antarctica) in order to evaluate the provenance of dust present in Antarctic ice. Lead isotopic compositions in Dome C ice support the contention that Southern South America was an important source of dust in Antarctica during the last two glacial maxima, and furthermore suggest occasional dust contributions from local Antarctic sources. The isotopic signature of Pb in Antarctic ice is altered by the presence of volcanic Pb, inhibiting the evaluation of glacial-interglacial changes in dust sources and the evaluation of Australia as a source of dust to Antarctica. Consequently, an accurate evaluation of the predominant source(s) of Antarctic dust can only be obtained from glacial maxima, when dust-Pb concentrations were greatest. These data confirm that volcanic Pb is present throughout Antarctica and is emitted in a physical phase that is free from Ba, while dust Pb is transported within a matrix containing Ba and other crustal elements. GEOGRAPHIC REGION: Antarctica PERIOD OF RECORD: 217 - 2 KYrBP FUNDING SOURCES: Australian Research Council (DP0345625), Australian Antarctic Science Advisory Committee, Glaciology Section (No. 1092, 2334), European Union Marie Curie IIF Fellowship (MIF1-CT-2006-039529, TDICOSO), European Project for Ice Coring in Antarctica (EPICA). DESCRIPTION: EPICA Dome C, Antarctica ice core Pb and Ba concentrations, and Pb isotope ratios, for the period 217 - 2 KYrBP. Sample ages calculated according to EDC3 chronology reported by Parrenin et al. Climate of the Past Discussions, 2007, 3(2), pp.575-606. dD values from Jouzel et al. Science, 2007, v.317, pp.793-796. EPICA Dome C, Antarctica ice core: 75.1°S, 123.35°E, 3233 m asl DATA: Table 1. Lead and Ba concentrations and Pb isotopic compositions from EPICA Dome C ice core samples. Uncertainties in the isotope ratios are 95% confidence intervals. Column 1: Depth (m) Column 2: Age (ky BP) Column 3: dD (per mil) Column 4: Lead 206/Lead 207 (206Pb/207Pb) Column 5: Lead 206/Lead 207 (206Pb/207Pb) Error Column 6: Lead 208/Lead 207 (208Pb/207Pb) Column 7: Lead 208/Lead 207 (208Pb/207Pb) Error Column 8: Lead 206/Lead 204 (206Pb/204Pb) Column 9: Lead 206/Lead 204 (206Pb/204Pb) Error Column 10: Lead concentration (Pb conc.) [pg/g] Column 11: Barium concentration (Ba conc.) [pg/g] Column 12: Pb/Ba ratio (by wt.) Depth Age dD 206Pb/207Pb error 208Pb/207Pb error 206Pb/204Pb error Pb-conc. Ba-conc. Pb/Ba 86.6 2.01 -398 1.197 0.01 2.466 0.014 18.1 0.8 0.3 6.9 0.04 86.9 2.02 -398 1.184 0.014 2.459 0.014 18.7 0.5 0.2 5.6 0.03 229.1 6.94 -399 1.197 0.011 2.479 0.012 18.8 0.3 0.2 7.3 0.03 229.4 6.95 -399 1.195 0.022 2.467 0.032 19 1.7 0.2 6.3 0.03 316 10.27 -389 1.222 0.021 2.495 0.04 19.1 0.9 0.2 7.6 0.02 316.3 10.28 -389 1.194 0.024 2.46 0.026 19 1.7 0.2 6.7 0.03 379.2 12.81 -409 1.22 0.009 2.486 0.011 19.7 0.8 0.7 13.2 0.05 379.5 12.82 -409 1.228 0.014 2.501 0.024 19.4 1.1 0.3 5.4 0.05 405.6 14.2 -415 1.204 0.006 2.476 0.014 18.7 0.2 0.7 17.3 0.04 405.9 14.22 -415 1.217 0.009 2.481 0.011 19.3 0.5 0.8 16.5 0.05 419.4 14.91 -405 1.203 0.009 2.485 0.015 18.8 0.4 0.3 13.6 0.03 432.6 15.61 -411 1.197 0.007 2.487 0.01 18.9 0.3 0.4 13.2 0.03 432.9 15.63 -411 1.2 0.008 2.489 0.011 18.7 0.6 0.4 15.9 0.03 461.2 17.38 -434 1.234 0.008 2.488 0.008 19.1 0.5 6.9 82.4 0.08 461.5 17.4 -434 1.226 0.002 2.488 0.009 19 0.4 6.1 107 0.06 471.1 18.13 -439 1.207 0.007 2.473 0.007 18.6 0.3 12.5 240 0.05 471.4 18.16 -439 1.257 0.004 2.507 0.008 19.8 0.6 29.5 176 0.17 488.7 19.63 -442 1.2 0.007 2.468 0.012 18.5 0.5 13.9 316 0.04 489 19.66 -442 1.193 0.004 2.478 0.008 18.7 0.2 10.8 352 0.03 515.6 21.94 -442 1.199 0.014 2.465 0.019 18.5 0.3 14.3 467 0.03 515.9 21.97 -442 1.198 0.006 2.478 0.008 18.5 0.2 13.1 400.2 0.03 573.9 27.01 -444 1.2 0.005 2.459 0.008 18.6 0.5 10.9 274.9 0.04 574.2 27.03 -444 1.207 0.008 2.465 0.014 17.7 0.4 16.1 362.3 0.04 598.1 29.09 -437 1.206 0.005 2.486 0.009 19 0.6 9.7 266.7 0.04 598.4 29.12 -437 1.2 0.005 2.475 0.007 18.7 0.2 8.2 230.8 0.04 653.1 33.66 -435 1.196 0.006 2.464 0.01 18.4 0.5 4.2 119.5 0.04 653.4 33.68 -435 1.202 0.007 2.47 0.011 18.8 0.3 4 120.6 0.03 653.7 33.71 -438 1.202 0.006 2.444 0.017 17.5 0.7 5.2 132.8 0.04 654 33.73 -438 1.205 0.003 2.477 0.013 18.7 0.3 8.2 185.4 0.04 680.9 35.97 -438 1.208 0.003 2.479 0.005 18.8 0.2 5.7 118.2 0.05 708.7 38.14 -427 1.245 0.005 2.492 0.015 19.2 0.1 3.1 39.1 0.08 709 38.16 -427 1.243 0.004 2.503 0.006 19.5 0.2 1.8 29.9 0.06 735.6 40.37 -439 1.196 0.007 2.461 0.007 18.6 0.4 4.2 136.2 0.03 735.9 40.4 -439 1.198 0.005 2.465 0.009 18.6 0.7 4.4 151 0.03 763.1 42.8 -432 1.2 0.004 2.464 0.008 18.8 0.5 2.1 71.3 0.03 763.4 42.82 -432 1.196 0.008 2.47 0.01 18.9 0.4 2.9 96.2 0.03 818.1 47.17 -434 1.206 0.004 2.467 0.008 18.6 0.3 5.4 126.5 0.04 818.4 47.2 -434 1.201 0.003 2.463 0.009 18.5 0.5 5 151.6 0.03 900.6 53.83 -429 1.224 0.004 2.482 0.007 19.3 0.1 17.4 436.1 0.04 900.9 53.85 -429 1.232 0.004 2.485 0.007 19 0.4 9.2 173.8 0.05 983.1 60.65 -437 1.209 0.003 2.49 0.006 19 0.2 7.2 176.8 0.04 983.4 60.67 -437 1.214 0.006 2.484 0.004 18.3 0.6 9.8 225.4 0.04 1010.6 63.43 -439 1.208 0.004 2.481 0.009 18.9 0.2 7.5 200.9 0.04 1010.9 63.45 -439 1.196 0.003 2.464 0.006 18.5 0.4 13.9 359.8 0.04 1093.1 71.64 -423 1.231 0.005 2.496 0.008 19.2 0.3 1.1 16 0.07 1093.4 71.66 -423 1.238 0.004 2.487 0.012 19.1 0.4 3.2 29.5 0.11 1148.1 76.57 -426 1.2 0.004 2.473 0.008 18.5 0.4 1.5 43.6 0.04 1148.4 76.6 -426 1.239 0.004 2.507 0.007 18.8 0.3 4 47 0.08 1203.1 81.05 -412 1.254 0.006 2.507 0.009 19 0.2 3.4 21.5 0.16 1203.4 81.07 -412 1.241 0.009 2.49 0.011 19.4 0.3 1.4 16.4 0.09 1258.1 86 -424 1.196 0.008 2.474 0.006 18.3 0.4 2 51.1 0.04 1258.4 86.03 -424 1.222 0.006 2.477 0.007 19 0.5 3.5 60.5 0.06 1313.1 91.43 -421 1.217 0.005 2.478 0.008 18.9 0.3 0.8 14.1 0.06 1313.4 91.46 -421 1.204 0.005 2.461 0.01 18.1 0.3 0.6 16.2 0.04 1423.1 102.25 -424 1.23 0.008 2.472 0.006 18.9 0.4 1.5 30.2 0.05 1423.4 102.28 -424 1.225 0.003 2.477 0.01 18.9 0.5 3.2 42.8 0.07 1533.1 114.12 -401 1.229 0.01 2.487 0.009 19.3 0.3 0.4 11.2 0.03 1533.4 114.14 -401 1.211 0.01 2.497 0.011 19.1 0.3 0.3 7.7 0.04 1643.1 122.81 -387 1.23 0.008 2.5 0.009 19.5 0.3 0.5 11.8 0.04 1643.4 122.83 -387 1.208 0.01 2.475 0.018 19.2 0.7 0.5 14.2 0.04 1753.1 131.85 -412 1.251 0.007 2.502 0.006 18.8 0.2 2.9 22.3 0.13 1753.4 131.89 -412 1.237 0.006 2.488 0.01 18.6 1.2 2.6 30.4 0.09 1863.1 152.18 -438 1.204 0.003 2.468 0.006 18.6 0.2 18.3 370.5 0.05 1863.4 152.24 -438 1.193 0.003 2.459 0.009 18.6 1 18.9 447.3 0.04 1973.1 174.42 -439 1.2 0.004 2.47 0.009 18.7 0.3 7.3 191.7 0.04 1973.4 174.49 -439 1.192 0.005 2.462 0.009 18.6 0.2 9.7 150.4 0.06 2050.1 191.28 -426 1.212 0.004 2.477 0.019 18.2 0.6 2.1 59.1 0.04 2050.4 191.34 -426 1.208 0.004 2.477 0.006 18.9 0.4 1.5 46.8 0.03 2094.1 198.89 -406 1.22 0.018 2.483 0.028 19 0.7 0.2 6.7 0.03 2094.4 198.94 -406 1.214 0.017 2.484 0.017 18.8 0.6 0.2 8 0.02 2138.1 207.17 -405 1.211 0.008 2.487 0.01 19 0.2 0.3 8.7 0.04 2138.4 207.22 -405 1.224 0.008 2.479 0.008 19.3 0.7 0.5 8.8 0.06 2193.1 216.99 -418 1.214 0.005 2.472 0.007 18.6 0.4 1.3 32.6 0.04 2193.4 217.05 -418 1.214 0.009 2.476 0.006 19.4 1 2 32.3 0.06