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Sarnthein, Michael; Balmer, Sven; Grootes, Pieter Meiert; Mudelsee, Manfred (2014): Planktic and benthic 14C reservoir ages, calibrated by a suite of 14C plateaus in the glacial-to-deglacial Suigetsu atmospheric 14C record. PANGAEA, https://doi.org/10.1594/PANGAEA.837511, Supplement to: Sarnthein, M et al. (2015): Planktic and benthic 14C reservoir ages for three ocean basins, calibrated by a suite of 14C plateaus in the glacial-to-deglacial Suigetsu atmospheric 14C record. Radiocarbon, 57(1), 129-151, https://doi.org/10.2458/azu_rc.57.17916

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Abstract:
We here present a compilation of planktic and benthic 14C reservoir ages for the Last Glacial Maximum (LGM) and early deglacial from 11 key sites of global ocean circulation in the Atlantic and Indo-Pacific Ocean. The ages were obtained by 14C plateau tuning, a robust technique to derive both an absolute chronology for marine sediment records and a high-resolution record of changing reservoir/ventilation ages (Delta14C values) for surface and deep waters by comparing the suite of planktic 14C plateaus of a sediment record with that of the atmospheric 14C record (Sarnthein et al., 2007, doi:10.1029/173GM13). Results published thus far used as atmospheric 14C reference U/Th-dated corals, the Cariaco planktic record, and speleothems (Fairbanks et al., 2005, doi:10.1016/j.quascirev.2005.04.007; Hughen et al., 2006, doi:10.1016/j.quascirev.2006.03.014; Beck et al., 2001, doi:10.1023/A:1008175728826). We have now used the varve-counted atmospheric 14C record of Lake Suigetsu terrestrial macrofossils (Ramsey et al., 2012, doi:10.1126/science.1226660) to recalibrate the boundary ages and reservoir ages of the seven published records directly to an atmospheric 14C record. In addition, the results for four new cores and further planktic results for four published records are given. Main conclusions from the new compilation are: (1) The Suigetsu atmospheric 14C record on its varve counted time scale reflects all 14C plateaus, their internal structures and relative length previously identified, but implies a rise in the average 14C plateau age by 200-700 14C yr during LGM and early deglacial times. (2) Based on different 14C ages of coeval atmospheric and planktic 14C plateaus, marine surface water Delta14C may have temporarily dropped to an equivalent of ~0 yr in low-latitude lagoon waters, but reached >2500 14C yr both in stratified subpolar waters and in upwelled waters such as in the South China Sea. These values differ significantly from a widely assumed constant global planktic Delta14C value of 400 yr. (3) Suites of deglacial planktic Delta14C values are closely reproducible in 14C records measured at neighboring core sites. (4) Apparent deep-water 14C ventilation ages (equivalents of benthic Delta14C), deduced from the sum of planktic Delta14C and coeval benthic-planktic 14C differences, vary from 500 up to >5000 yr in LGM and deglacial ocean basins.
Further details:
(Table 1) Core locations, 14C reservoir ages, and data sources (Delta14C values are based on a fraction of Modern Carbon (fMC) equal to 1.42 for the LGM and to 1.2 for the B/A. No Delta14C values are given for HS-1, since fMC varies from 1.2 to 1.4)
Coverage:
Median Latitude: 34.889637 * Median Longitude: 7.689572 * South-bound Latitude: -13.082500 * West-bound Longitude: -148.921300 * North-bound Latitude: 67.866660 * East-bound Longitude: 167.725000
Date/Time Start: 1986-07-13T00:00:00 * Date/Time End: 2002-06-06T04:51:00
Size:
23 datasets

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Datasets listed in this publication series

  1. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2a) Planktic 14C and 14C reservoir ages of sediment core GIK23074-1. https://doi.org/10.1594/PANGAEA.837465
  2. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2b) Planktic and benthic 14C and 14C reservoir ages of sediment core PS2644-5. https://doi.org/10.1594/PANGAEA.837470
  3. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2c) Planktic and benthic 14C and 14C reservoir ages of sediment core MD08-3180. https://doi.org/10.1594/PANGAEA.837469
  4. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2d) Planktic 14C and 14C reservoir ages of sediment core 165-1002. https://doi.org/10.1594/PANGAEA.837475
  5. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2e) Planktic and benthic 14C and 14C reservoir ages of sediment core MD01-2378. https://doi.org/10.1594/PANGAEA.837479
  6. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2f) Planktic and benthic 14C and 14C reservoir ages of sediment core GIK17940-2. https://doi.org/10.1594/PANGAEA.837481
  7. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2g) Planktic 14C and 14C reservoir ages of sediment core SO50-37KL. https://doi.org/10.1594/PANGAEA.837483
  8. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2h) Planktic and benthic 14C and 14C reservoir ages of sediment core MD01-2416. https://doi.org/10.1594/PANGAEA.837485
  9. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2i) Planktic and benthic 14C and 14C reservoir ages of sediment core MD02-2489. https://doi.org/10.1594/PANGAEA.837488
  10. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2j) Planktic and benthic 14C and 14C reservoir ages of sediment core 146-893A. https://doi.org/10.1594/PANGAEA.837491
  11. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 2k) Planktic and benthic 14C and 14C reservoir ages of sediment core MD02-2503. https://doi.org/10.1594/PANGAEA.837492
  12. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment core 146-893A. https://doi.org/10.1594/PANGAEA.837500
  13. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment core 165-1002. https://doi.org/10.1594/PANGAEA.837501
  14. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment core GIK17940-2. https://doi.org/10.1594/PANGAEA.837502
  15. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment core GIK23074-1. https://doi.org/10.1594/PANGAEA.837503
  16. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment core MD01-2378. https://doi.org/10.1594/PANGAEA.837504
  17. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment core MD01-2416. https://doi.org/10.1594/PANGAEA.837505
  18. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment core MD02-2489. https://doi.org/10.1594/PANGAEA.837506
  19. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment core MD02-2503. https://doi.org/10.1594/PANGAEA.837507
  20. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment core MD08-3180. https://doi.org/10.1594/PANGAEA.837508
  21. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment core PS2644-5. https://doi.org/10.1594/PANGAEA.837509
  22. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for sediment cores SO50-37KL and GIK17940. https://doi.org/10.1594/PANGAEA.837510
  23. Sarnthein, M; Balmer, S; Grootes, PM et al. (2014): (Table 3) Definition of 14C plateaus for the Lake Suigetsu record. https://doi.org/10.1594/PANGAEA.837499