Camp Century Deep Ice Core Geochemistry ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!! NAME OF DATA SET: Camp Century Deep Ice Core Geochemistry LAST UPDATE: 5/2005 (Original receipt by WDC Paleo) CONTRIBUTOR: Paul LaViolette, The Starburst Foundation. IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2005-039 SUGGESTED DATA CITATION: LaViolette, P. 2005. Camp Century Deep Ice Core Geochemistry. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2005-039. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCES: LaViolette, P.A.. Galactic Explosions, Cosmic Dust Invasions, and Climatic Change. PhD dissertation, Portland State Univ., (1983) Portland, Oregon, pp. 763. updated 2005 and published as "Galactic Superwaves and Their Impact on the Earth Environment. http://home.earthlink.net/~gravitics/LaVioletteBooks/EUF-CD.html LaViolette, P. A. 1985. Evidence of High Cosmic Dust Concentrations in Late Pleistocene Polar Ice. Meteoritics 20: 545-558. GEOGRAPHIC REGION: Greenland PERIOD OF RECORD: 73-35 KYrBP DESCRIPTION: Camp Century Deep Ice Core Geochemistry. The depths and ages of the samples have been corrected from the values given in the 1983 and 1985 references. The sample depths given here accord with the depth scheme of S. J. Johnsen. The corresponding ages conform to the Summit-Camp Century chronology published by S. J. Johnsen, et al. Nature 359 (1992), pp. 311 - 313. DATA: Camp Century Deep Ice Core Geochemistry Column 1: Tube Number (sample ID) Column 2: Depth (m.) The sample depths given here accord with the depth scheme of S. J. Johnsen. Column 3: Age, cal kYBP (The ages conform to the Summit-Camp Century chronology published by Johnsen et al. 1992. Column 4: Ir (pg/l) Column 5: Au (ng/l) Column 6: Ag (ng/l) Column 7: Fe (µg/l) Column 8: Co (ng/l) Column 9: Ni (µg/l) Column 10: Ba (µg/l) Column 11: Sb (µg/l) Column 12: Sn (µg/l) Column 13: Sc (ng/l) Column 14: Hf (ng/l) Column 15: Cs (ng/l) Column 16: La (ng/l) Column 17: Ce (ng/l) Column 18: Tb (ng/l) Tube No. Depth Age Ir(pg/l) Au(ng/l) Ag(ng/l) Fe(µg/l) Co(ng/l) Ni(µg/l) Ba(µg/l) Sb(µg/l) Sn(µg/l) Sc(ng/l) Hf(ng/l) Cs(ng/l) La(ng/l) Ce(ng/l) Tb(ng/l) 949 1212 35,300 54 ± 11 < 1.5 146 ± 29 163 ± 33 57 ± 11 0.53 ± 0.1 6.0 ± 1.2 < 1.2 2.3 ± 0.5 36 ± 7 10.1 ± 2.0 11 ± 2 47 ± 9 78 ± 16 158 ± 32 955 1221 41,300 14.6 ± 3 < 1.8 < 7.5 26 ± 5 7.9 ± 1.6 < 0.05 0.12 ± 0.02 < 3.6 < 0.15 5.6 ± 1.1 1.28 ± 0.26 1.75 ± 0.35 < 16 20 ± 7 47 ± 9 959 1226.2 46,200 < 0.9 < 1.0 < 2.0 187 ± 37 54 ± 11 < 0.13 0.85 ± 0.17 2.6 ± 0.3 < 0.04 51 ± 10 13.7 ± 2.7 25 ± 5 80 ± 16 230 ± 46 247 ± 49 960 1227.7 47,700 17 ± 3 < 2.0 < 6.1 111 ± 22 41 ± 8 0.26 ± 0.07 1.18 ± 0.08 0.95 ± 0.1 0.059 ± .006 27 ± 5 6.6 ± 1.3 11 ± 2 42 ± 8 120 ± 24 135 ± 27 962-1(a) 1230.5 50,300 85 ± 17 29 ± 6 610 ± 120 38 ± 8 51 ± 10 1.5 ± 0.3 2.8 ± 0.6 31 ± 6 920 ± 180 6.8 ± 1.4 3.3 ± 0.7 2.7 ± 0.5 < 8 17 ± 5 18.7 ± 3.7 962-1(b)* 1230.5 50,300 86 ± 25 28 ± 8 520 ± 150 37 ± 8 39 ± 11 1.14 ± 0.3 20 ± 2 920 ± 180 7.7 ± 1.5 4.6 ± 0.9 73 ± 15 192 ± 38 962-2 1231.5 50,700 < 1.0 < 1.4 < 2.8 102 ± 20 32 ± 6 < 0.09 0.65 ± 0.07 41 ± 4 *** < 0.034 28 ± 6 7.3 ± 1.5 12.6 ± 2.5 43 ± 9 120 ± 24 114 ± 23 969 1241 54,600 31 ± 6 < 4.3 < 21 16.9 ± 3.4 5.6 ± 2.6 1.11 ± 0.2 < 0.11 < 12 < 0.14 4.1 ± 0.8 1.33 ± 0.27 2.3 ± 0.5 < 21 < 38 < 24 992 1275 73,100 20.5 ± 4 < 0.65 1120 ± 220 163 ± 33 66 ± 13 0.64 ± 0.13 2.9 ± 0.6 < 11 2.2 ± 0.4 34 ± 7 10.6 ± 2.1 10.9 ± 2.2 37 ± 7 89 ± 18 128 ± 26 * Second determination made from a small portion split from sample 962-1 (a) *** Suspect Sb value for this sample may be due to sample contamination