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Table 4 Calculated apparent surface exposure ages and uncertainties (1σ)

From: Combined cosmogenic 10Be, in situ 14C and 36Cl concentrations constrain Holocene history and erosion depth of Grueben glacier (CH)

Sample ID 10Be agea (ka) 14C ageb (ka) 36Cl agec (ka) Mean age (ka)
Grub1 10.6 ± 0.6 9.2 ± 0.5   9.9 ± 0.7
Grub2 8.3 ± 0.6 9.5 ± 0.5 10.6 ± 0.8 9.5 ± 0.7
Grub3 10.3 ± 0.7 9.8 ± 0.5 8.8 ± 0.7 9.6 ± 0.4
Grub4 8.0 ± 0.6 7.4 ± 0.4 8.9 ± 0.6 8.1 ± 0.5
  1. aUsing NENA production rates (Balco et al. 2009). For all nuclides ‘St’ scaling, zero erosion and a rock density of 2.65 g/cm3 are assumed
  2. bUsing a spallogenic production rate at SLHL of (12.3 ± 0.5) at/g/a (Young et al. 2014)
  3. cUsing spallogenic production rates at SLHL of (48.8 ± 3.4) at/g/(Ca) (Stone et al. 1996) and (162 ± 24) at/g/a (K) (Evans et al. 1997)