A new Scandinavian reference 10Be production rate |
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| Institution: | 1. Geomorphology and Glaciology, Department of Physical Geography, and Bolin Centre for Climate Research, Stockholm University, S-106 91 Stockholm, Sweden;2. School of Geographical and Earth Sciences, The University of Glasgow, Glasgow, UK;3. Department of Geology, Quaternary Sciences, Lund University, Lund, Sweden;4. Department of Physics and Astronomy/Purdue Rare Isotope Measurement Laboratory, Purdue University, West Lafayette, USA;5. Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, USA;6. Geological Survey of Norway, Trondheim, Norway;1. Department of Geosciences, University of Tuebingen, D-72074 Tuebingen, Germany;2. Laboratory of Ion Beam Physics, ETH Zurich, CH-8093 Zurich, Switzerland;3. Institute of Geochemistry and Petrology, ETH Zurich, CH-8092 Zurich, Switzerland;4. National Museum of Natural History, 1-Tzar Osvoboditel Blvd, BG-1000 Sofia, Bulgaria;5. Schumannstrasse 83, D-40237 Duesseldorf, Germany;6. Senckenberg Center for Human Evolution and Palaeoenvironment (HEP), Eberhard Karls University of Tuebingen, D-72074 Tuebingen, Germany;1. Department of Geology and Rubenstein School of the Environment and Natural Resources, University of Vermont, Burlington, VT, 05405, USA;2. Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK;3. Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA;1. Faculty of Oceanography and Geography, University of Gdańsk, Aleja Marszałka Piłsudskiego 46, 81-378, Gdynia, Poland;2. Institute of Hydro-Engineering of Polish Academy of Sciences, Kościerska 7, 80-328, Gdańsk, Poland;1. New Mexico Institute of Mining & Technology, Department of Earth & Environmental Science, Socorro, NM 87801, USA;2. Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450, USA;1. NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA;2. College of Earth, Ocean, and Atmospheric Science, Oregon State University, Corvallis, OR 97331, USA;3. Université Paris 1 Panthéon-Sorbonne, Laboratoire de Géographie Physique, CNRS, UMR 8591, 92195 Meudon, France;4. Department of Earth and Environmental Sciences, University of Ottawa, Ottawa, ON, Canada;5. OMS-Glacial Sedimentology and Stratigraphy Group, P.O. Box 3000, FI-90014, University of Oulu, Oulu, Finland;6. Department of Geological Sciences, University of Stockholm, Stockholm, Sweden;7. Department of Geoscience, University of Wisconsin–Madison, Madison, WI 53706, USA;8. Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, USA;9. Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN 47907, USA;10. Department of Earth and Environmental Sciences, University of St Andrews, St Andrews KY16 9AL, UK;1. University of Gdańsk, Faculty of Oceanography and Geography, Division of Geophysics, Piłsudskiego 46, 81-378, Gdynia, Poland;2. Aix Marseille Univ., CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France;3. University of Gdańsk, Faculty of Oceanography and Geography, Division of Geomorphology and Quaternary Geology, Gdańsk, Poland |
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| Abstract: | An important constraint on the reliability of cosmogenic nuclide exposure dating is the rigorous determination of production rates. We present a new dataset for 10Be production rate calibration from Mount Billingen, southern Sweden, the site of the final drainage of the Baltic Ice Lake, an event dated to 11,620 ± 100 cal yr BP. Five samples of flood-scoured bedrock surfaces (58.5°N, 13.7°E, 105–120 m a.s.l.) unambiguously connected to the drainage event yield a reference 10Be production rate of 4.19 ± 0.20 atoms g−1 yr−1 for the CRONUS-Earth online calculator Lm scaling and 4.02 ± 0.18 atoms g−1 yr−1 for the nuclide specific LSDn scaling. We also recalibrate the reference 10Be production rates for four sites in Norway and combine three of these with the Billingen results to derive a tightly clustered Scandinavian reference 10Be production rate of 4.13 ± 0.11 atoms g−1 yr−1 for the CRONUS Lm scaling and 3.95 ± 0.10 atoms g−1 yr−1 for the LSDn scaling scheme. |
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| Keywords: | Cosmogenic exposure dating Fennoscandian Ice Sheet Deglaciation chronology Baltic Ice Lake Younger Dryas |
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