Table S2A Step Treatment 1 Natural/regenerative dose 2 Preheat 200°C, 60 s 3 IRSL 50°C, 100 s 4 OSL 125°C, 100 s 5 Test dose 500 s 6 Preheat 200°C, 60 s 7 IRSL 50°C, 100 s 8 OSL 125°C, 100 s 9 Return to step 1 Table S2B Step Treatment 1 Natural/regenerative dose 2 Preheat 250°C, 60 s 3 IRSL 50°C, 100 s 4 IRSL 225°C, 100 s 5 Test dose 500 s 6 Preheat 250°C, 60 s 7 IRSL 50°C, 100 s 8 IRSL 225°C, 100 s 9 IRSL 290°C, 40 s 10 Return to step 1