Table 4 Details of luminescence dating conducted on 1 mm-aliquots of GUG20-01 and GUG20-02, using feldspar IR50 and pIRIR150 signals
From: Glaciofluvial sequences recording the Birrfeld Glaciation (MIS 5d–2) in the Bern area, Swiss Plateau
Sample | Radionuclide concentration | Total dose rate (Gy ka−1) | Nr. of aliquots | CAM Uncorr De (Gy) | OD (%) | FMM Uncorr De (Gy) | g2days (%/decade) | CAM* or FMM fading corr. De (Gy) | Age (ka) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
U (ppm) | Th (ppm) | K (%) | |||||||||
IR50 | |||||||||||
GUG20-01 | 1.7 ± 0.1 | 5.5 ± 0.1 | 1.3 ± 0.0 | 2.2 ± 0.1 | 24 | 119.1 ± 6.9 | 27.8 | 104.1 ± 8.0 | 2.8 ± 0.8 | 141.3 ± 18.6 | 65.7 ± 9.1 |
GUG20-02 | 1.6 ± 0.3 | 4.7 ± 0.1 | 1.3 ± 0.0 | 2.0 ± 0.1 | 24 | 128.5 ± 5.3 | 19.5 | / | 3.4 ± 0.4 | 189.3 ± 14.1* | 93.4 ± 8.2* |
pIRIR150 | |||||||||||
GUG20-01 | 1.7 ± 0.1 | 5.5 ± 0.1 | 1.3 ± 0.0 | 2.2 ± 0.1 | 23 | 256.2 ± 16.7 | 30.7 | 220.0 ± 13.6 | 1.0 ± 0.4 | 241.5 ± 17.6 | 112.3 ± 9.5 |
GUG20-02 | 1.6 ± 0.3 | 4.7 ± 0.1 | 1.3 ± 0.0 | 2.0 ± 0.1 | 24 | 252.6 ± 11.9 | 22.4 | / | 1.4 ± 0.3 | 292.8 ± 17.6* | 144.5 ± 11.0* |