Kluky grassland soil (Stagnic Cambisol on granite)
South Bohemia, near Kluky village (about 80 km south of Prague), Czechia
Soils
- Type
- Soil
Eutric Stagnic Cambisol (Loamic, Ochric) under grassland on Paleozoic granite, enriched in geogenic Tl (0.6 to 3.0 mg/kg) with no significant anthropogenic input. Peak of +3.5 to +4.0 between Ah2 and Bw2, end horizons (Oi, Ah1, Bwg, C) from 0 to +2, close to the bedrock (+1.60) and K-feldspar (+1.39); ε205Tl correlated with 1/oxalate-extractable Mn (R² = 0.6): oxidative 205Tl sorption by pedogenic Mn oxides (nodules at +14.4 in the oxalate extract), then leaching of light Tl fixed in the Bwg horizon (about 0). No sign of light Tl uptake by vegetation in the Oi horizon (Vejvodová et al., 2020). Published GPS coordinates.
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 1.96 ± 0.7 ε | 1 | Oi horizon (1-0 cm) Single analysis; ± 0.7 ε (2 SD); 0.62 ± 0.14 mg/kg Tl (2 SD). | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… | |
| 1.25 ± 0.7 ε | 1 | Ah1 horizon (0-10 cm) Single analysis; ± 0.7 ε (2 SD); 1.29 ± 0.06 mg/kg Tl (2 SD), of which 0.02 mg/kg exchangeable, 314 mg/kg oxalate-extractable Mn. | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… | |
| 4.03 ± 0.7 ε | 1 | Ah2 horizon (10-20 cm) Single analysis; ± 0.7 ε (2 SD); 1.32 ± 0.02 mg/kg Tl (2 SD), of which 0.05 mg/kg exchangeable, 397 mg/kg oxalate-extractable Mn; heaviest horizon value. | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… | |
| 3.72 ± 0.7 ε | 1 | Bw1 horizon (20-30 cm) Single analysis; ± 0.7 ε (2 SD); 1.51 ± 0.14 mg/kg Tl (2 SD), of which 0.04 mg/kg exchangeable, 427 mg/kg oxalate-extractable Mn; highest oxalate-extractable Mn. | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… | |
| 3.48 ± 0.7 ε | 1 | Bw2 horizon (30-40 cm) Single analysis; ± 0.7 ε (2 SD); 1.83 ± 0.02 mg/kg Tl (2 SD), of which 0.04 mg/kg exchangeable, 303 mg/kg oxalate-extractable Mn. | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… | |
| 2.69 ± 0.7 ε | 1 | Bw3 horizon (40-50 cm) Single analysis; ± 0.7 ε (2 SD); 2.65 ± 0.28 mg/kg Tl (2 SD), of which 0.03 mg/kg exchangeable, 261 mg/kg oxalate-extractable Mn. | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… | |
| 0.02 ± 0.7 ε | 1 | Bwg horizon (50-60 cm) Single analysis; ± 0.7 ε (2 SD); 2.95 ± 0.16 mg/kg Tl (2 SD), of which 0.04 mg/kg exchangeable, 175 mg/kg oxalate-extractable Mn; redoximorphic horizon, light Tl leached from overlying horizons. | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… | |
| 1.52 ± 0.7 ε | 1 | C horizon (from 60 cm) Single analysis; ± 0.7 ε (2 SD); 1.99 ± 0.10 mg/kg Tl (2 SD), of which 0.04 mg/kg exchangeable, 151 mg/kg oxalate-extractable Mn. | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… | |
| 4.57 ± 0.7 ε | 1 | soil clay fraction (separated by sedimentation) Single analysis; ± 0.7 ε (2 SD); 3.35 ± 0.20 mg/kg Tl and 0.10 mg/kg oxalate-extractable Tl; heavier than bulk soil: an unquantified part of its signature reflects the authigenic Mn oxides it contains. | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… | |
| 14.4 ± 0.7 ε | 1 | Mn oxide-rich nodules and coatings, oxalate extract Single analysis; ± 0.7 ε (2 SD); 1.91 mg/kg Tl and 25,600 mg/kg Mn oxalate-extractable; amorphous Mn oxide (XRD), Tl loading about 40 mg/kg oxide; heaviest value of the study, within the range of Fe-Mn crusts and nodules (+10 to +15). | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… | |
| 8.17 ± 0.7 ε | 1 | Mn oxide-rich nodules and coatings, total digestion Single analysis; ± 0.7 ε (2 SD); 4.98 ± 0.40 mg/kg Tl; lighter than the oxalate extract (+14.4), the residual (silicate) fraction diluting the oxide signature. | Vejvodová et al. (2020), Thallium isotopic fractionation in soil: the key controls, Envir… |
Deposits of the same type
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- Wolbrom fen Poland
- Forest soil next to the Erzmatt (profile F) Switzerland
- Erzmatt soil profiles P1 to P3 (Voegelin et al., 2015) Switzerland
- Erzmatt meadow soil (profile M) Switzerland
- Contaminated grassland soils around the Lengerich cement plant (profiles 1 to 3) Germany
- Soils of the Peisey-Nancroix mining and metallurgical site France
Cite this page
IsoFind Atlas (2026). Kluky grassland soil (Stagnic Cambisol on granite), isotope signatures. https://www.isofind.tech/isotopes/en/sites/sol-de-prairie-de-kluky-cambisol-stagnique-sur-granite/ (accessed 2026-10-16).
@misc{isofind2026klukygrasslandsoilstagniccamb,
title = {Kluky grassland soil (Stagnic Cambisol on granite), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/sol-de-prairie-de-kluky-cambisol-stagnique-sur-granite/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16