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  • Christopher Bronk Ramsey (a1), Timothy J Heaton (a2), Gordon Schlolaut (a3) (a4), Richard A Staff (a5), Charlotte L Bryant (a5), Achim Brauer (a4), Henry F Lamb (a6), Michael H Marshall (a6) and Takeshi Nakagawa (a7)...


Terrestrial plant macrofossils from the sedimentary record of Lake Suigetsu, Japan, provide the only quasi-continuous direct atmospheric record of radiocarbon (14C) covering the last 50 ka cal BP (Bronk Ramsey et al. 2012). Since then, new high precision data have become available on U-Th dated speleothems from Hulu Cave China, covering the same time range (Cheng et al. 2018). In addition, an updated varve-based chronology has also been published for the 2006 core from Lake Suigetsu (SG06) based on extended microscopic analysis of the sediments and improved algorithms for interpolation (Schlolaut et al. 2018). Here we reanalyze the radiocarbon dataset from Suigetsu based on the new varve counting information and the constraints imposed by the speleothem data. This enables the new information on the calendar age scale of the Suigetsu dataset to be used in the construction of the consensus IntCal calibration curve. Comparison of the speleothem and plant macrofossil records provides insight into the mechanisms underlying the incorporation of carbon into different types of record and the relative strengths of different types of archive for calibration purposes.


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Bard, E, Arnold, M, Hamelin, B, Tisnerat-Laborde, N, Cabioch, G. 1998. Radiocarbon calibration by means of mass spectrometric 230Th/234U and 14C ages of corals: An updated database including samples from Barbados, Mururoa and Tahiti. Radiocarbon 40(3):10851092. doi: 10.1017/s0033822200019135.
Bronk Ramsey, C. 2008. Deposition models for chronological records. Quaternary Science Reviews 27(1–2):4260. doi: 10.1016/j.quascirev.2007.01.019.
Bronk Ramsey, C, Staff, RA, Bryant, CL, Brock, F, Kitagawa, H, van der Plicht, J, Schlolaut, G, Marshall, MH, Brauer, A, Lamb, HF, et al. 2012. A complete terrestrial radiocarbon record for 11.2 to 52.8 kyr B.P. Science 338(6105):370374. doi: 10.1126/science.1226660.
Cheng, H, Lawrence Edwards, R, Southon, J, Matsumoto, K, Feinberg, JM, Sinha, A, Zhou, W, Li, H, Li, X, Xu, Y, et al. 2018. Atmospheric 14C/12C changes during the last glacial period from Hulu Cave. Science 362(6420):12931297. doi: 10.1126/science.aau0747.
Heaton, TJ, Blaauw, M, Blackwell, PG, Bronk Ramsey, C, Reimer, PJ, Scott, ME. 2020. The IntCal20 approach to radiocarbon calibration curve construction: A new methodology using Bayesian splines and errors-in-variables. Radiocarbon 62. This issue.
Hughen, K, Lehman, S, Southon, J, Overpeck, J, Marchal, O, Herring, C, Turnbull, J. 2004. 14C activity and global carbon cycle changes over the past 50,000 years. Science 303(5655):202207. doi: 10.1126/science.1090300.
Kitagawa, H, van der Plicht, J. 1998. Atmospheric radiocarbon calibration to 45,000 yr BP: Late glacial fluctuations and cosmogenic isotope production. Science 279(5354):11871190. doi: 10.1126/science.279.5354.1187.
Marshall, M, Schlolaut, G, Nakagawa, T, Lamb, H, Brauer, A, Staff, R, Bronk Ramsey, C, Tarasov, P, Gotanda, K, Haraguchi, T, Yokoyama, Y, Yonenobu, H, Tada, R. 2012. A novel approach to varve counting using μXRF and X-radiography in combination with thin-section microscopy, applied to the Late Glacial chronology from Lake Suigetsu, Japan. Quaternary Geochronology 13:7080. doi: 10.1016/j.quageo.2012.06.002.
Nakagawa, T, Gotanda, K, Haraguchi, T, Danhara, T, Yonenobu, H, Brauer, A, Yokoyama, Y, Tada, R, Takemura, K, Staff, RA, et al. 2012. SG06, a fully continuous and varved sediment core from Lake Suigetsu, Japan: stratigraphy and potential for improving the radiocarbon calibration model and understanding of late Quaternary climate changes. Quaternary Science Reviews 36:164176. doi: 10.1016/j.quascirev.2010.12.013.
Reimer, PJ, Baillie, MGL, Bard, E, Bayliss, A, Beck, JW, Blackwell, PG, Bronk Ramsey, C, Buck, CE, Burr, GS, Edwards, RL, et al. 2009. IntCal09 and Marine09 radiocarbon age calibration curves, 0–50,000 years cal BP. Radiocarbon 51(4):11111150. doi: 10.1017/s0033822200034202.
Reimer, PJ, Bard, E, Bayliss, A, Beck, JW, Blackwell, PG, Bronk Ramsey, C, Buck, C, Cheng, H, Edwards, RL, Friedrich, M, et al. 2013. IntCal13 and Marine13 radiocarbon age calibration curves 0–50,000 years cal BP. Radiocarbon 55(4):18691887. doi: 10.2458/azu_js_rc.55.16947.
Schlolaut, G, Staff, RA, Brauer, A, Lamb, HF, Marshall, MH, Bronk Ramsey, C, Nakagawa, T. 2018. An extended and revised Lake Suigetsu varve chronology from ∼50 to ∼10 ka BP based on detailed sediment micro-facies analyses. Quaternary Science Reviews 200:351366. doi: 10.1016/j.quascirev.2018.09.021.
Southon, J, Noronha, AL, Cheng, H, Edwards, RL, Wang, YJ. 2012. A high-resolution record of atmospheric C-14 based on Hulu Cave speleothem H82. Quaternary Science Reviews 33:3241.
Staff, RA, Schlolaut, G, Ramsey, CB, Brock, F, Bryant, CL, Kitagawa, H, van der Plicht, J, Marshall, MH, Brauer, A, Lamb, HFet al. 2013. Integration of the old and new Lake Suigetsu (Japan) terrestrial radiocarbon calibration data sets. Radiocarbon 55(4):20492058. doi: 10.2458/azu_js_rc.v55i2.16339.
Turney, CSM, Palmer, J, Bronk Ramsey, C, Adolphi, F, Muscheler, R, Hughen, KA, Staff, RA, Jones, RT, Thomas, ZA, Fogwill, CJ, Hogg, A. 2016. High-precision dating and correlation of ice, marine and terrestrial sequences spanning Heinrich Event 3: Testing mechanisms of interhemispheric change using New Zealand ancient kauri (Agates australis). Quaternary Science Reviews 137:126134. doi: 10.1016/j.quascirev.2016.02.005.


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  • Christopher Bronk Ramsey (a1), Timothy J Heaton (a2), Gordon Schlolaut (a3) (a4), Richard A Staff (a5), Charlotte L Bryant (a5), Achim Brauer (a4), Henry F Lamb (a6), Michael H Marshall (a6) and Takeshi Nakagawa (a7)...


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