SEARCH

SEARCH BY CITATION

Keywords:

  • 10Be;
  • Hardangerfjord;
  • Nordfjord;
  • Norway;
  • Oldedalen;
  • production rate;
  • Scandinavia

Abstract

We present a new regional calibration of the 10Be production rate from two well-dated surfaces in southern Norway: a rock avalanche with 14C-dated wood and a precisely dated Younger Dryas moraine. Calculated 10Be production rates are 4.26 ± 0.13 and 4.65 ± 0.14 at g−1 a−1 for the Lal/Stone and Lifton scaling models, respectively. Our regional production rate for southern Norway is 5% lower than the canonical global 10Be production rate with lower uncertainties. Our 10Be production rate agrees with regional 10Be production rates from north-eastern North America and New Zealand. The 10Be production rate estimate presented here can be used to improve the precision and accuracy of exposure-dated ice-marginal features, as well as other surfaces, in northern Europe. Copyright © 2011 John Wiley & Sons, Ltd.