Hanslik, Daniela; Jakobsson, Martin; Backman, Jan; Björck, Svante; Sellén, Emma; O'Regan, Matthew; Fornaciari, Eliana; Skog, Göran (2010): (Table 1) Radiocarbon ages and different calibrated ages for sediment core HLY0503-18TC obtained during the HOTRAX expedition [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.810548, Supplement to: Hanslik, D et al. (2010): Quaternary Arctic Ocean sea ice variations and radiocarbon reservoir age corrections. Quaternary Science Reviews, 29(25-26), 3430-3441, https://doi.org/10.1016/j.quascirev.2010.06.011
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Abstract:
A short sediment core from a local depression forming an intra basin on the Lomonosov Ridge, was retrieved during the Healy-Oden Trans-Arctic Expedition 2005 (HOTRAX). It contains a record of the Marine Isotope Stages (MIS) 1-3 showing exceptionally high abundances of calcareous microfossils during parts of MIS 3. Based on radiocarbon dating, linear sedimentation rates of 7-9 cm/ka persist during the last deglaciation. The Last Glacial Maximum (LGM) is partly characterized by a hiatus. Planktic foraminiferal abundance variations of Neogloboquadrina pachyderma sinistral and calcareous nannofossils reflect changes in Arctic Ocean summer sea ice coverage and probably inflow of subpolar North Atlantic water. Calibration of the radiocarbon ages, using modeled reservoir corrections from previous studies and the microfossil abundance record of the studied core, results in marine reservoir ages of 1400 years or more, at least during the last deglaciation. Paired benthic-planktic radiocarbon dated foraminiferal samples indicate a slow decrease in age difference between surface and bottom waters from the Lateglacial to the Holocene, suggesting circulation and ventilation changes.
Further details:
Fairbanks, Richard G; Mortlock, Richard A; Chiu, Tzu-Chien; Cao, L; Kaplan, Alexey; Guilderson, Thomas P; Fairbanks, Todd W; Bloom, Arthur L; Grootes, Pieter Meiert; Nadeau, Marie-Josée (2005): Radiocarbon calibration curve spanning 0 to 50,000 years BP based on paired 230Th/234U/238U and 14C dates on pristine corals. Quaternary Science Reviews, 24(16-17), 1781-1796, https://doi.org/10.1016/j.quascirev.2005.04.007
Hughen, Konrad A; Lehman, Scott J; Southon, John R; Overpeck, Jonathan T; Marchal, Olivier; Herring, C; Turnbull, J (2004): 14C Activity and Global Carbon Cycle Changes over the Past 50,000 Years. Science, 303(5655), 202-207, https://doi.org/10.1126/science.1090300
Project(s):
Coverage:
Latitude: 88.450000 * Longitude: 146.561000
Date/Time Start: 2005-09-09T00:00:00 * Date/Time End: 2005-09-09T00:00:00
Minimum DEPTH, sediment/rock: 0.009 m * Maximum DEPTH, sediment/rock: 0.577 m
Event(s):
HLY0503-18TC * Latitude: 88.450000 * Longitude: 146.561000 * Date/Time: 2005-09-09T00:00:00 * Elevation: -2598.0 m * Location: Lomonosov Ridge, Arctic Ocean * Campaign: HLY0503 (Healy-Oden Trans Arctic Expedition 2005 (HOTRAX05)) * Basis: Healy * Method/Device: Trigger corer (TC)
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Age, dated material | Dated material | Hanslik, Daniela | |||
| 3 | Sample ID | Sample ID | Hanslik, Daniela | |||
| 4 | Age, dated | Age dated | ka BP | Hanslik, Daniela | Age, 14C conventional | ka BP |
| 5 | Age, dated standard deviation | Age dated std dev | ± | Hanslik, Daniela | Age, 14C conventional | |
| 6 | Calendar age | Cal age | ka BP | Hanslik, Daniela | Age, 14C calibrated | DeltaR = 0 yrs |
| 7 | Calendar age, standard deviation | Cal age std dev | ± | Hanslik, Daniela | Age, 14C calibrated | DeltaR = 0 yrs |
| 8 | Calendar age | Cal age | ka BP | Hanslik, Daniela | Age, 14C milieu/reservoir corrected and calibrated | DeltaR = 300 yrs |
| 9 | Calendar age, standard deviation | Cal age std dev | ± | Hanslik, Daniela | Age, 14C milieu/reservoir corrected and calibrated | DeltaR = 300 yrs |
| 10 | Calendar age | Cal age | ka BP | Hanslik, Daniela | Age, 14C milieu/reservoir corrected and calibrated | DeltaR = 650 yrs |
| 11 | Calendar age, standard deviation | Cal age std dev | ± | Hanslik, Daniela | Age, 14C milieu/reservoir corrected and calibrated | DeltaR = 650 yrs |
| 12 | Calendar age | Cal age | ka BP | Hanslik, Daniela | Age, 14C milieu/reservoir corrected and calibrated | DeltaR = 1000 yrs |
| 13 | Calendar age, standard deviation | Cal age std dev | ± | Hanslik, Daniela | Age, 14C milieu/reservoir corrected and calibrated | DeltaR = 1000 yrs |
| 14 | Method comment | Method comm | Hanslik, Daniela |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
182 data points