Table 3 Summary of OSL ages produced in this study.
From: Origin of sandy substrates controlling the distribution of open vegetation ecosystems in Amazonia
Sample | Ecosystem | Depth (m) | Dose rate (Gy/ka) | Error (Gy/ka) | n | CAM (Gy) | Error (Gy) | OD (%) | MAM (Gy) | Error (Gy) | CAM Age (ka) | Error (ka) | MAM Age (ka) | Error (ka) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AVA-15a | WSE | 0.50 | 0.25 | 0.04 | 12 | 1.8 | 0.1 | 13 | 2.0 | 0.1 | 7.2 | 1.2 | 7.9 | 1.3 |
AVA-15b | WSE | 1.00 | 0.24 | 0.02 | 23 | 6.3 | 0.4 | 31 | 3.5 | 0.4 | 26.2 | 3.0 | 14.6 | 2.3 |
AVA-21a | WSE | 0.20 | 0.30 | 0.10 | 15 | 2.0 | 0.3 | 48 | 1.3 | 0.1 | 6.7 | 2.4 | 4.2 | 1.4 |
AVA-21b | WSE | 0.60 | 0.33 | 0.04 | 16 | 3.0 | 0.3 | 43 | 2.0 | 0.2 | 9.2 | 1.4 | 6.1 | 0.9 |
AVA-21c | WSE | 1.10 | 0.37 | 0.03 | 14 | 12.0 | 1.2 | 37 | 10.0 | 0.9 | 32.7 | 4.0 | 27.3 | 3.1 |
AVA-21d | WSE | 1.60 | 0.40 | 0.03 | 16 | 20.7 | 1.0 | 16 | 22.0 | 2.0 | 51.7 | 4.2 | 54.9 | 6.2 |
AVA-21e | WSE | 2.10 | 0.44 | 0.03 | 19 | 30.1 | 1.7 | 24 | 19.2 | 3.3 | 69.1 | 5.9 | 44.1 | 8.2 |
AVA-23c | WSE | 0.90 | 0.26 | 0.02 | 20 | 3.8 | 0.4 | 46 | 2.3 | 0.3 | 14.9 | 2.1 | 8.9 | 1.4 |
ALC-55 | Savanna | 0.80 | 0.70 | 0.07 | 24 | 14.6 | 1.3 | 42 | 8.8 | 0.9 | 20.8 | 2.7 | 12.5 | 1.7 |
AVA-02a | Savanna | 0.80 | 0.46 | 0.05 | 19 | 1.0 | 0.1 | 21 | 0.859 | 0.002 | 2.1 | 0.3 | 1.8 | 0.2 |
AVA-02b | Savanna | 1.20 | 0.40 | 0.04 | 17 | 0.88 | 0.04 | 18 | 0.83 | 0.01 | 2.2 | 0.2 | 2.1 | 0.2 |
AVA-02c | Savanna | 1.60 | 0.40 | 0.03 | 19 | 1.07 | 0.03 | 9 | 1.06 | 0.05 | 2.7 | 0.2 | 2.6 | 0.2 |
AVA-02d | Savanna | 2.00 | 0.42 | 0.03 | 14 | 8.6 | 2.2 | 97 | 1.8 | 0.1 | 20.2 | 5.4 | 4.4 | 0.4 |
AVA-02e | Savanna | 2.30 | 0.42 | 0.03 | 20 | 18.0 | 2.7 | 66 | 7.5 | 0.6 | 42.8 | 6.9 | 17.8 | 1.8 |
AVA-03a | Savanna | 0.45 | 0.46 | 0.09 | 18 | 7.4 | 1.0 | 56 | 3.4 | 0.4 | 16.1 | 3.8 | 7.3 | 1.7 |
AVA-03b | Savanna | 0.90 | 0.48 | 0.05 | 20 | 14.6 | 1.3 | 36 | 10.6 | 0.7 | 30.4 | 4.1 | 22.0 | 2.7 |
AVA-03c | Savanna | 1.35 | 0.44 | 0.04 | 23 | 16.4 | 1.3 | 38 | 10.9 | 1.3 | 37.3 | 4.3 | 24.8 | 3.5 |
AVA-03d | Savanna | 1.80 | 0.49 | 0.04 | 23 | 22.7 | 1.1 | 23 | 18.7 | 1.6 | 46.5 | 4.0 | 38.3 | 4.3 |
AVA-04a | Savanna | 0.60 | 0.64 | 0.07 | 18 | 10.6 | 1.0 | 42 | 8.1 | 0.4 | 16.6 | 2.5 | 12.7 | 1.6 |
AVA-04b | Savanna | 1.20 | 0.69 | 0.05 | 21 | 45.0 | 1.5 | 14 | 42.7 | 0.1 | 65.1 | 5.5 | 61.7 | 4.8 |
AVA-05a | Savanna | 0.70 | 0.63 | 0.07 | 17 | 4.2 | 0.1 | 14 | 4.3 | 0.4 | 6.6 | 0.7 | 6.9 | 0.9 |
AVA-05b | Savanna | 1.40 | 0.58 | 0.04 | 20 | 5.4 | 0.2 | 16 | 5.8 | 0.5 | 9.4 | 0.8 | 10.1 | 1.1 |
AVA-06a | Savanna | 0.50 | 0.59 | 0.08 | 18 | 2.5 | 0.2 | 30 | 1.8 | 0.1 | 4.2 | 0.7 | 3.1 | 0.5 |
AVA-06b | Savanna | 1.00 | 0.67 | 0.06 | 21 | 4.0 | 0.3 | 31 | 2.0 | 0.2 | 6.0 | 0.7 | 2.9 | 0.4 |
AVA-06c | Savanna | 1.50 | 0.62 | 0.05 | 22 | 4.0 | 0.3 | 33 | 3.7 | 0.1 | 6.5 | 0.7 | 6.0 | 0.5 |
AVA-06d | Savanna | 2.00 | 0.68 | 0.05 | 23 | 7.7 | 0.6 | 36 | 6.0 | 0.4 | 11.3 | 1.2 | 8.9 | 0.9 |
AVA-07a | Savanna | 0.50 | 0.56 | 0.08 | 18 | 2.2 | 0.2 | 41 | 1.755 | 0.003 | 3.9 | 0.7 | 3.1 | 0.5 |
AVA-08a | Forest | 0.80 | 0.75 | 0.07 | 15 | 11.3 | 1.3 | 44 | 6.0 | 0.8 | 15.2 | 2.2 | 8.1 | 1.2 |
AVA-08b | Forest | 1.70 | 0.96 | 0.07 | 23 | 52.3 | 3.5 | 32 | 40.9 | 3.2 | 54.3 | 5.4 | 42.5 | 4.6 |
AVA-12a | Savanna | 0.20 | 0.94 | 0.20 | 16 | 1.6 | 0.3 | 67 | 0.65 | 0.06 | 1.7 | 0.5 | 0.7 | 0.2 |
AVA-12b | Savanna | 0.55 | 1.08 | 0.10 | 20 | 5.0 | 0.3 | 30 | 4.03 | 0.25 | 4.7 | 0.5 | 3.7 | 0.4 |
AVA-12c | Savanna | 1.10 | 0.97 | 0.07 | 22 | 13.3 | 0.4 | 14 | 12.6 | 0.0 | 13.7 | 1.1 | 12.9 | 1.0 |
AVA-13a | Savanna | 0.50 | 0.78 | 0.09 | 18 | 0.70 | 0.05 | 28 | 0.6 | 0.0 | 0.9 | 0.1 | 0.7 | 0.1 |
AVA-13b | Savanna | 1.00 | 0.92 | 0.06 | 23 | 2.5 | 0.1 | 17 | 3.1 | 0.0 | 2.7 | 0.2 | 3.4 | 0.2 |
AVA-14a | Savanna | 0.50 | 0.51 | 0.08 | 21 | 2.0 | 0.2 | 47 | 1.0 | 0.1 | 3.9 | 0.7 | 2.0 | 0.4 |
AVA-14b | Savanna | 1.00 | 0.57 | 0.05 | 21 | 6.6 | 0.5 | 36 | 3.9 | 0.5 | 11.6 | 1.3 | 6.9 | 1.1 |
AVA-14c | Savanna | 1.50 | 0.56 | 0.04 | 19 | 10.5 | 0.8 | 33 | 7.0 | 0.8 | 18.9 | 2.0 | 12.7 | 1.7 |
AVA-14d | Savanna | 2.00 | 0.57 | 0.04 | 22 | 17.0 | 1.2 | 32 | 10.9 | 1.1 | 30.04 | 2.98 | 19.4 | 2.4 |
