# Taylor Glacier Horizontal Ice Core 46,000 Year Mineral Dust Elemental Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/30332 # Description: NOAA Landing Page # Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/icecore/antarctica/taylor/taylor-glacier2017dust.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # Data_Type: Ice Cores # # Dataset_DOI: # # Parameter_Keywords: chemistry #--------------------------------------- # Contribution_Date # Date: 2020-06-18 #--------------------------------------- # File_Last_Modified_Date # Date: 2020-06-18 #--------------------------------------- # Title # Study_Name: Taylor Glacier Horizontal Ice Core 46,000 Year Mineral Dust Elemental Data #--------------------------------------- # Investigators # Investigators: Aarons, S.M.; Aciego, S.M.; Arendt, C.A.; Blakowski, M.A.; Steigmeyer, A.; Gabrielli, P.; Sierra-Hernández, M.R.; Beaudon, E.; Delmonte, B.; Baccolo, G.; May, N.W.; Pratt, K.A. #--------------------------------------- # Description_Notes_and_Keywords # Description: Mineral dust concentration and rare earth element composition from the Taylor Glacier horizontal ice core, Antarctica, for the past 46,000 years. # Provided Keywords: Holocene, Pleistocene, Climate dynamics, Paleoclimatology, Antarctica, Ice cores, Radiogenic isotopes, Dust #--------------------------------------- # Publication # Authors: Sarah M. Aarons, Sarah M. Aciego, Carli A. Arendt, Molly A. Blakowski, August Steigmeyer, Paolo Gabrielli, M. Roxana Sierra-Hernández, Emilie Beaudon, Barbara Delmont, Giovanni Baccolo, Nathaniel W. May, Kerri A. Pratt # Published_Date_or_Year: 2017-04-15 # Published_Title: Dust composition changes from Taylor Glacier (East Antarctica) during the last glacial-interglacial transition: A multi-proxy approach # Journal_Name: Quaternary Science Reviews # Volume: 162 # Edition: # Issue: # Pages: 60-71 # Report_Number: # DOI: 10.1016/j.quascirev.2017.03.011 # Online_Resource: https://www.sciencedirect.com/science/article/abs/pii/S0277379116306424 # Full_Citation: # Abstract: Mineral dust is transported in the atmosphere and deposited in oceans, ice sheets and the terrestrial biosphere. Temporal changes in locations of dust source areas and transport pathways have implications for global climate and biogeochemical cycles. The chemical and physical characterization of the dust record preserved in ice cores is useful for identifying of dust source regions, dust transport, dominant wind direction and storm trajectories. Here, we present a 50,000-year geochemical characterization of mineral dust entrapped in a horizontal ice core from the Taylor Glacier in East Antarctica. Strontium (Sr) and neodymium (Nd) isotopes, grain size distribution, trace and rare earth element (REE) concentrations, and inorganic ion (Cl- and Na+) concentrations were measured in 38 samples, corresponding to a time interval from 46 kyr before present (BP) to present. The Sr and Nd isotope compositions of insoluble dust in the Taylor Glacier ice shows distinct changes between the Last Glacial Period (LGP in this study ranging from ~46.7-15.3 kyr BP) the early Holocene (in this study ranging from ~14.5-8.7 kyr BP), and zero-age samples. The 87Sr/86Sr isotopic composition of dust in the Taylor Glacier ice ranged from 0.708 to 0.711 during the LGP, while the variability during the early Holocene is higher ranging from 0.707 to 0.714. The ENd composition ranges from 0.1 to -3.9 during the LGP, and is more variable from 1.9 to -8.2 during the early Holocene. The increased isotopic variability during the early Holocene suggests a shift in dust provenance coinciding with the major climate transition from the LGP to the Holocene. The isotopic composition and multiple physical and chemical constraints support previous work attributing Southern South America (SSA) as the main dust source to East Antarctica during the LGP, and a combination of both local Ross Sea Sector dust sources and SSA after the transition into the Holocene. This study provides the first high time resolution data showing variations in dust provenance to East Antarctic ice during a major climate regime shift, and we provide evidence of changes in the atmospheric transport pathways of dust following the last deglaciation. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: University of Michigan # Grant: Rackham Graduate School; Turner Award #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation (NSF) # Grant: OPP Antarctic Glaciology Award 1246702 #--------------------------------------- # Site_Information # Site_Name: Taylor Glacier # Location: Antarctica # Northernmost_Latitude: -77.873 # Southernmost_Latitude: -77.873 # Easternmost_Longitude: 161.51 # Westernmost_Longitude: 161.51 # Elevation: #--------------------------------------- # Data_Collection # Collection_Name: Taylor2017dust # First_Year: 46711 # Last_Year: 0 # Time_Unit: cal yr BP # Core_Length: # Notes: #--------------------------------------- # Chronology_Information # Chronology: In Aarons et al., 2017 the chronology used is after Baggenstos et al., 2015. An updated chronology is in Baggenstos et al., 2018 # Baggenstos, D., 2015. Taylor Glacier as an Archive of Ancient Ice for Large-volume Samples: Chronology, Gases, Dust, and Climate, Earth Sciences. University of California, San Diego, Ann Arbor, MI, p. 148. # Baggenstos, D., Severinghaus, J.P., Mulvaney, R., McConnell, J.R., Sigl, M., Maselli, O., et al. ( 2018). A horizontal ice core from Taylor Glacier, its implications for Antarctic climate history, and an improved Taylor Dome ice core time scale. Paleoceanography and Paleoclimatology, 33, 778-794. https://doi.org/10.1029/2017PA003297 # # Sample ID Approximate age [year BP] # N203 46,711 # N196 44,374 # N168 36,281 # N161 34,510 # N147 30,080 # N140 28,828 # N133 26,820 # N126 24,446 # N119 21,891 # N112 19,130 # N105 17,138 # N98 16,116 # N91 15,333 # P20 16,035 # P40 14,491 # P60 13,588 # P75 13,174 # P90 12,446 # P110 11,609 # P115 11,419 # P125 11,071 # P130 10,927 # P140 10,735 # P145 10,557 # P155 10,259 # P165 10,082 # P170 9980 # P175 9864 # P180 9722 # P185 9587 # P190 9458 # P195 9351 # P200 9247 # P205 9076 # P210 8843 # P215 8725 # R01 0 # R01-D 0 # N91-Surface 15,333 # #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ## Sample sample identification,,,,,ice cores,,,C, ## Latitude latitude,,,degree north,,ice cores,,,C, ## Longitude longitude,,,degree east,,ice cores,,,C, ## Age ice age,,,calendar year before present,,ice cores,,,N, approximate age ## 87Sr/86Sr 87Sr/86Sr,dust,,dimensionless,,ice cores,,thermal ionization mass spectrometry,N, ## Sr2s 87Sr/86Sr,dust,two standard deviations,parts per million,,ice cores,,thermal ionization mass spectrometry,N, ## ENd epsilon neodymium,dust,,epsilon unit,,ice cores,,thermal ionization mass spectrometry,N, ## ENd2s epsilon neodymium,dust,two standard deviations,epsilon unit,,ice cores,,thermal ionization mass spectrometry,N, ## La lanthanum,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Ce cerium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Pr praseodymium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Nd neodymium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Eu europium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Sm samarium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Gd gadolinium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Tb terbium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Dy dysprosium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Ho holmium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Er erbium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Tm thulium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Yb ytterbium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Lu lutetium,bulk ice,,parts per trillion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Cl- chloride,bulk ice,,parts per billion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## Na sodium,bulk ice,,parts per billion,,ice cores,,inductively-coupled plasma sector field mass spectrometry,N, ## dust0.6-1 dust,bulk ice,,parts per billion,,ice cores,,particle size analysis,N,0.6-12m ## dust0.6-1SD dust,bulk ice,one standard deviation,parts per billion,,ice cores,,particle size analysis,N,0.6-12m ## dust1-2 dust,bulk ice,,parts per billion,,ice cores,,particle size analysis,N,1-2um ## dust1-2SD dust,bulk ice,one standard deviation,parts per billion,,ice cores,,particle size analysis,N,1-2um ## dust2-3 dust,bulk ice,,parts per billion,,ice cores,,particle size analysis,N,2-3um ## dust2-3SD dust,bulk ice,one standard deviation,parts per billion,,ice cores,,particle size analysis,N,2-3um ## dust3-4 dust,bulk ice,,parts per billion,,ice cores,,particle size analysis,N,3-4um ## dust3-4SD dust,bulk ice,one standard deviation,parts per billion,,ice cores,,particle size analysis,N,3-4um # #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NaN Sample Latitude Longitude Age 87Sr/86Sr Sr2s ENd ENd2s La Ce Pr Nd Eu Sm Gd Tb Dy Ho Er Tm Yb Lu Cl- Na dust0.6-1 dust0.6-1SD dust1-2 dust1-2SD dust2-3 dust2-3SD dust3-4 dust3-4SD N203 -77 45.613 161 43.424 46711 0.710785 38 3.9 0.7 5.5 16.6 1.8 6.0 0.4 1.5 1.1 0.2 1.1 0.2 0.5 0.1 2.4 0.1 112.33 360.51 10.00 0.00 20.00 0.00 20.00 0.00 10.00 0.00 N196 -77 45.612 161 43.408 44374 0.709805 25 2.4 0.5 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 172.00 290.18 20.00 0.00 70.00 0.00 40.00 0.00 10.00 0.00 N168 -77 45.599 161 43.36 36281 0.709407 41 0.1 0.3 18.0 49.6 5.8 20.5 1.3 5.3 5.0 0.6 3.6 3.4 1.9 0.3 1.5 0.3 127.83 429.01 10.00 0.00 50.00 0.00 30.00 0.00 10.00 0.00 N161 -77 45.596 161 43.349 34510 0.7113 86 3 2.3 9.9 20.9 2.8 9.0 0.6 2.4 1.8 0.3 1.4 0.3 0.8 0.1 0.7 0.1 251.83 144.84 20.00 0.00 60.00 0.00 30.00 0.00 10.00 0.00 N147 -77 45.592 161 43.339 30080 0.709926 9 3.3 0.6 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 283.33 145.01 60.00 0.00 170.00 0.00 100.00 0.00 30.00 0.00 N140 -77 45.589 161 43.311 28828 0.70937 37 2.9 0.4 17.1 34.5 3.6 12.2 0.7 3.2 2.5 0.4 2.0 0.4 1.0 0.2 0.9 0.2 185.17 350.68 30.00 0.00 90.00 0.00 60.00 0.00 30.00 0.00 N133 -77 45.586 161 43.301 26820 0.708 32 1.6 0.2 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 353.00 195.84 400.00 0.00 1020.00 0.00 690.00 20.00 270.00 0.00 N126 -77 45.583 161 43.286 24446 0.70887 47 1.6 0.2 41.7 130.0 14.6 51.7 3.3 13.0 11.1 1.5 8.5 1.7 4.8 0.7 3.9 0.7 327.33 335.85 60.00 NaN 200.00 NaN 150.00 NaN 80.00 NaN N119 -77 45.58 161 43.272 21891 0.708324 28 1.5 0.2 61.2 186.8 19.3 67.4 3.7 16.2 16.4 2.1 11.5 2.3 6.3 0.9 5.2 0.8 233.00 205.01 160.00 0.00 430.00 0.00 230.00 0.00 60.00 0.00 N112 -77 45.578 161 43.277 19130 0.708144 45 1.1 0.2 40.6 122.2 15.2 52.6 2.8 12.8 11.3 1.6 8.4 1.8 5.1 0.7 4.3 0.7 266.50 262.01 40.00 0.00 170.00 0.00 110.00 0.00 40.00 0.00 N105 -77 45.574 161 43.26 17138 0.710348 142 NaN NaN 10.3 30.2 5.4 13.1 0.8 3.4 3.0 0.5 2.5 0.5 1.3 0.2 1.1 0.2 391.00 173.76 30.00 0.00 80.00 0.00 50.00 0.00 20.00 0.00 N98 -77 45.562 161 43.25 16116 0.708496 30 1.4 0.4 5.9 19.6 2.3 7.9 0.6 2.3 1.9 0.3 1.5 0.3 0.8 0.2 0.8 0.1 228.17 236.84 20.00 0.00 40.00 0.00 20.00 0.00 10.00 0.00 N91 -77 45.571 161 43.238 15333 0.710151 27 4.9 3.9 5.8 14.2 1.7 5.6 0.4 1.5 1.3 0.2 0.9 0.2 0.5 0.1 0.5 0.1 342.50 145.67 10.00 0.00 30.00 0.00 20.00 0.00 10.00 0.00 P20 -77 45.528 161 43.033 16035 NaN NaN 3.1 1.5 9.5 24.3 3.0 10.3 0.7 3.2 2.2 0.3 1.9 0.4 1.0 0.2 0.9 0.2 220.67 176.17 30.00 0.00 90.00 0.00 50.00 0.00 20.00 0.00 P40 -77 45.487 161 43.098 14491 0.710974 40 3.5 0.4 2.4 4.4 0.6 1.9 0.2 0.6 0.4 0.1 0.3 0.1 0.1 0.0 0.1 0.0 NaN NaN 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P60 -77 45.511 161 42.961 13588 0.711238 59 3 0.9 5.2 6.9 0.8 2.8 0.2 0.8 0.6 0.1 0.4 0.1 0.2 0.1 0.4 0.0 65.83 438.85 0.00 0.00 10.00 0.00 10.00 0.00 0.00 0.00 P070 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.00 0.00 10.00 0.00 10.00 0.00 0.00 0.00 P75 -77 45.508 161 42.943 13174 0.713714 117 NaN NaN 2.2 6.1 0.7 2.5 0.3 0.8 0.6 0.1 2.1 0.1 0.2 0.1 0.2 0.1 156.00 154.01 0.00 0.00 10.00 0.00 0.00 0.00 0.00 0.00 P90 -77 45.499 161 42.912 12446 0.710207 24 4.7 1.1 1.5 2.8 0.4 1.1 0.2 0.5 0.2 0.0 0.1 0.0 0.1 0.0 0.1 0.0 182.33 327.84 0.00 0.00 10.00 0.00 0.00 0.00 0.00 0.00 P110 -77 45.493 161 42.869 11609 0.710167 95 4.6 0.7 15.1 76.1 7.2 33.8 0.6 2.8 1.3 0.2 0.9 0.2 0.5 0.1 0.5 0.1 107.00 273.68 0.00 0.00 10.00 0.00 10.00 0.00 0.00 0.00 P115 -77 45.492 161 42.861 11419 0.709306 63 NaN NaN 20.1 9.0 0.8 2.7 0.3 0.8 0.5 0.1 0.3 0.1 0.2 0.0 0.1 0.0 156.50 149.84 0.00 0.00 10.00 0.00 10.00 0.00 0.00 0.00 P125 -77 45.488 161 42.848 11071 NaN NaN NaN NaN 1.8 4.9 0.6 2.0 0.3 0.6 0.4 0.1 0.3 0.1 0.1 0.1 0.3 0.0 192.17 166.34 0.00 0.00 10.00 0.00 10.00 0.00 0.00 0.00 P130 -77 45.486 161 42.832 10927 0.711525 64 2.3 0.8 0.7 1.8 0.2 0.7 0.2 0.4 0.2 0.1 0.1 0.0 0.1 0.0 0.1 0.0 194.33 333.84 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P140 -77 45.481 161 42.82 10735 0.711879 111 5.6 3.2 1.1 2.5 0.3 1.1 0.2 0.5 0.2 0.1 0.2 0.1 0.1 0.0 0.1 0.0 169.33 110.84 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P145 -77 45.479 161 42.807 10557 0.710797 142 NaN NaN 0.5 1.1 0.1 0.5 0.2 0.4 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 66.33 142.84 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P150 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P155 -77 45.475 161 42.794 10259 0.707556 101 NaN NaN 0.7 1.1 0.3 0.5 0.2 0.4 0.2 0.0 0.1 0.1 0.1 0.0 0.1 0.0 161.33 141.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P165 -77 45.471 161 42.776 10082 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN P170 -77 45.47 161 42.768 9980 0.71179 164 5 4.3 2.3 6.4 0.9 2.6 0.2 0.9 0.5 0.1 0.3 0.1 0.2 0.0 0.1 0.1 227.00 137.67 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P175 -77 45.468 161 42.757 9864 0.71229 38 4.1 1.1 1.3 3.5 0.4 1.3 0.2 0.5 0.4 0.1 0.4 0.1 0.2 0.0 0.1 0.0 85.00 278.84 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P180 -77 45.465 161 42.753 9722 NaN NaN NaN NaN 1.8 4.7 0.5 1.7 0.3 0.6 0.4 0.1 0.7 0.1 0.1 0.0 0.1 0.0 217.50 194.17 0.00 0.00 10.00 0.00 0.00 0.00 0.00 0.00 P185 -77 45.463 161 42.75 9587 0.712877 70 7.8 3.2 0.6 1.1 0.1 0.4 0.2 0.4 0.1 0.0 0.1 0.0 0.1 0.0 0.1 0.0 125.67 188.17 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P190 -77 45.462 161 42.728 9458 0.713742 64 1.1 1.3 2.3 4.5 0.5 1.8 0.2 0.6 0.3 0.1 0.2 0.1 0.1 0.0 0.1 0.0 231.17 122.00 0.00 0.00 10.00 0.00 10.00 0.00 0.00 0.00 P195 -77 45.461 161 42.719 9351 0.713899 212 NaN NaN 1.1 3.2 0.6 1.2 0.2 0.6 0.3 0.1 0.2 0.1 0.1 0.1 0.1 0.1 267.67 169.01 0.00 0.00 10.00 0.00 10.00 0.00 10.00 0.00 P200 -77 45.457 161 42.706 9247 0.708625 120 7.2 3.2 0.6 1.6 0.2 0.7 0.2 0.4 0.2 0.1 0.2 0.1 0.1 0.0 0.1 0.0 195.00 130.17 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P205 -77 45.455 161 42.696 9076 0.708355 58 2.7 0.4 1.4 3.5 0.4 1.6 0.2 0.5 0.3 0.1 0.2 0.1 0.1 0.0 0.1 0.0 205.17 99.84 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 P210 -77 45.455 161 42.695 8843 0.711243 61 1.9 2.2 5.1 14.7 1.6 5.6 0.3 1.4 1.0 0.2 0.8 0.2 0.5 0.2 0.5 0.1 199.67 168.84 0.00 0.00 10.00 0.00 0.00 0.00 0.00 0.00 P215 -77 45.454 161 42.687 8725 0.711306 73 2.4 3.4 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 261.67 169.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 R01 -77 41.513 160 57.849 0 0.714944 65 6.9 1.2 9.0 41.4 3.1 10.5 0.8 2.6 2.1 0.3 1.1 0.2 0.5 0.1 0.5 0.1 135.33 148.34 0.00 0.00 10.00 0.00 0.00 0.00 0.00 0.00 R01-D -77 41.513 160 57.849 0 0.714179 27 3.5 1.2 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN N91-Surface -77 45.571 161 43.238 15333 0.733621 32 8.2 1.2 2.0 5.7 0.7 2.2 0.3 0.9 0.5 0.1 0.5 0.1 0.2 0.1 0.3 0.1 NaN NaN 10.00 0.00 10.00 0.00 10.00 0.00 0.00 0.00 Blank 1 NaN NaN NaN NaN NaN NaN NaN 1.6 1.0 0.1 0.1 0.1 0.2 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN Blank 2 NaN NaN NaN NaN NaN NaN NaN 0.1 0.7 0.1 0.1 0.2 0.4 0.1 0.1 0.3 0.1 0.1 0.1 0.1 0.1 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN