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Table 1.
Reconstructed integral omnidirectional flux F(>E*) in 109 (cm2 year)−1 based on measurements of 26Al in the two samples (see Sect. 2.1) and boundary erosion rates r.
| Sample 64 455 | |||
|---|---|---|---|
| r = 0 mm Myr−1 | r = 0.5 mm Myr−1 | ||
| E*(MeV) | F(> E*) | E*(MeV) | F(> E*) |
| 16:8 ± 0:8 | 1:71 ± 0:14 | 19:9 ± 0:6 | 1:71 ± 0:11 |
| 19:7 ± 0:4 | 1:47 ± 0:06 | 22:1 ± 0:4 | 1:49 ± 0:06 |
| 21:5 ± 0:3 | 1:43 ± 0:05 | 23:7 ± 0:3 | 1:45 ± 0:05 |
| 23:6 ± 0:3 | 1:32 ± 0:07 | 25:6 ± 0:3 | 1:34 ± 0:07 |
| 26:4 ± 0:2 | 1:18 ± 0:05 | 28:2 ± 0:3 | 1:19 ± 0:05 |
| 29:4 ± 0:2 | 1:05 ± 0:04 | 31:0 ± 0:2 | 1:05 ± 0:04 |
| 39:7 ± 0:3 | 0:70 ± 0:03 | 41:0 ± 0:3 | 0:69 ± 0:03 |
| 52:7 ± 0:6 | 0:42 ± 0:02 | 53:6 ± 0:6 | 0:41 ± 0:02 |
| 75:8 ± 1:8 | 0:12 ± 0:02 | 76:2 ± 1:8 | 0:12 ± 0:02 |
| 79:2 ± 2:0 | 0:10 ± 0:02 | 79:7 ± 2:0 | 0:10 ± 0:02 |
| Sample 74 275 | |||
|---|---|---|---|
| r = 1 mm Myr−1 | r = 2 mm Myr−1 | ||
| E*(MeV) | F(>E*) | E*(MeV) | F(>E*) |
| 21:5 ± 1:5 | 1:41 ± 0:21 | 23:9 ± 1:7 | 1:55 ± 0:26 |
| 24:6 ± 0:9 | 1:31 ± 0:14 | 27:0 ± 1:1 | 1:43 ± 0:17 |
| 33:6 ± 0:4 | 0:97 ± 0:09 | 36:0 ± 0:5 | 1:03 ± 0:09 |
| 39:8 ± 0:4 | 0:87 ± 0:09 | 42:1 ± 0:4 | 0:91 ± 0:09 |
| 46:3 ± 0:4 | 0:61 ± 0:06 | 48:6 ± 0:4 | 0:64 ± 0:06 |
| 53:0 ± 0:5 | 0:63 ± 0:09 | 55:1 ± 0:5 | 0:65 ± 0:10 |
| 58:9 ± 0:5 | 0:45 ± 0:06 | 61:0 ± 0:5 | 0:46 ± 0:06 |
| 66:2 ± 0:6 | 0:40 ± 0:05 | 68:2 ± 0:6 | 0:41 ± 0:05 |
| 82:4 ± 0:6 | 0:28 ± 0:03 | 84:3 ± 0:6 | 0:28 ± 0:03 |
Notes. These data are shown in Fig. 4 of the main text.
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