Electron spin resonance signals of quartz in present-day river bed sediments and possible source rocks in the Kizu River basin, Western Japan
, y | 30 dic 2016
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Publicado en línea: 30 dic 2016
Páginas: 155 - 161
Recibido: 17 feb 2016
Aceptado: 26 ago 2016
DOI: https://doi.org/10.1515/geochr-2015-0039
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© 2016 A. Shimada.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Sample numbers and names, and ESR signal intensities.
| Sample | Name | Al center signal intensity (a.u.) | Ti–Li center signal intensity (a.u.) |
|---|---|---|---|
| R1 | Muro pyroclastic flow deposits | 384 ± 11.8 | 72 ± 0.3 |
| R2 | Metamudstone with sandstone | 217 ± 3.2 | 24 ± 0.6 |
| R3 | Ao granite | 210 ± 6.1 | 2 ± 0.1 |
| R4 | Yagyu granite | 89 ± 1.3 | 17 ± 0.5 |
| R5 | Shigaraki granite | 82 ± 2.1 | 6 ± 0.1 |
| S1 | Present river sediment-1 | 225 ± 10.1 | 36 ± 1.0 |
| S2 | Present river sediment-2 | 219 ± 7.5 | 28 ± 1.1 |
| S3 | Present river sediment-3 | 286 ± 3.9 | 42 ± 0.9 |
| S4 | Present river sediment-4 | 192 ± 6.1 | 21 ± 1.0 |
| S5 | Present river sediment-5 | 226 ± 5.3 | 28 ± 2.0 |
| S6 | Present river sediment-6 | 206 ± 5.8 | 22 ± 0.9 |
| S7 | Present river sediment-7 | 177 ± 7.5 | 24 ± 1.7 |
Mixing ratios of the present-day river bed sediments and ESR signal intensities of the samples.
| Sample | Major possible source rocks and sediments | Mixting ratio (%) estimated from Al center signal intensities | Mixting ratio (%) estimated from Ti-Li center signal intensities | ||
|---|---|---|---|---|---|
| S1 | R1 | 5 | 23 | ||
| R2 | 95 | 77 | |||
| S2 | R1 | 1 | 8 | ||
| R2 | 99 | 92 | |||
| S3 | R1 | 42 | |||
| R2 | 49 | ||||
| R3 | 9 | ||||
| S4 | R1 | –16 | |||
| R2 | 137 | ||||
| R3 | –21 | ||||
| S5 | R1 | 5 | |||
| R2 | 102 | ||||
| R3 | –7 | ||||
| S5 | S3 | 36 | 33 | ||
| S4 | 64 | 67 | |||
| S6 | R2 | 86 | |||
| R3 | 6 | ||||
| R4 | 8 | ||||
| S7 | R2 | 68 | |||
| R4 | 53 | ||||
| R5 | –21 | ||||
ESR signal intensities of artificially mixed samples created by mixing samples R1 and R5 (n = 5).
| R1 mixting ratio (%) | R5 mixting ratio (%) | Al center signal intensity (a.u.) | Ti–Li center signal intensity (a.u.) | |
|---|---|---|---|---|
| Estimated data | 25 | 75 | 158 | 22 |
| 50 | 50 | 233 | 39 | |
| 75 | 25 | 309 | 55 | |
| Experimental data | 0 | 100 | 82 | 6 |
| 25 | 75 | 174 | 23 | |
| 50 | 50 | 239 | 38 | |
| 75 | 25 | 290 | 55 | |
| 100 | 0 | 384 | 72 | |