Forest soil next to the Erzmatt (profile F)
Basel-Landschaft, Buus (Tabular Jura), Switzerland
Soils
- Type
- Soil
Pit under the forest next to the meadow. Erzmatt soils (Buus, Swiss Jura), formed on Triassic dolomite with a weathered hydrothermal Tl-As-Fe mineralisation, very rich in geogenic Tl. In both profiles, ε205Tl rises from the C horizons (+2.6 and +0.8) and the bedrock (+1.56) to +8.7 in the Bw horizons, then falls to about +2.5 in the O horizons: according to the authors, repeated redox cycles (oxidative sorption on Mn oxides, weathering of Tl(III) phases, remobilisation of heavy Tl(I) then fixed by illite) and, at the surface, uptake of light Tl by plants; exchangeable Tl of the B horizons is lighter than total Tl (+3.18 to +4.86 in the Bw horizons, Table S6) (Vaněk et al., 2020). Soil classified as Eutric Hyperskeletic Cambisol (WRB). Published GPS coordinates (Fig. S1: N 47.505781, E 7.852798).
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 2.53 ± 0.7 ε | 1 | Oi horizon (2-1 cm) Single analysis; ± 0.7 ε (2 SD); 22.1 ± 0.5 mg/kg Tl (2 SD), of which 5.3 % exchangeable (1 M NH4NO3) and 10.8 % oxalate-extractable. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 2.72 ± 0.7 ε | 1 | Oe horizon (1-0 cm) Single analysis; ± 0.7 ε (2 SD); 92.9 ± 1.3 mg/kg Tl (2 SD), of which 5.8 % exchangeable (1 M NH4NO3) and 9.8 % oxalate-extractable. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 3.26 ± 0.7 ε | 1 | Ah horizon (0-5 cm) Single analysis; ± 0.7 ε (2 SD); 602 ± 25 mg/kg Tl (2 SD), of which 1.9 % exchangeable (1 M NH4NO3) and 3.8 % oxalate-extractable. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 8.65 ± 0.7 ε | 1 | Bw1 horizon (5-10 cm) Single analysis; ± 0.7 ε (2 SD); 551 ± 18 mg/kg Tl (2 SD), of which 3.1 % exchangeable (1 M NH4NO3) and 5.8 % oxalate-extractable; heaviest value of the profile. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 8.06 ± 0.7 ε | 1 | Bw2 horizon (10-15 cm) Single analysis; ± 0.7 ε (2 SD); 526 ± 20 mg/kg Tl (2 SD), of which 4.0 % exchangeable (1 M NH4NO3) and 5.8 % oxalate-extractable. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 3.63 ± 0.7 ε | 1 | Bw3 horizon (15-20 cm) Single analysis; ± 0.7 ε (2 SD); 539 ± 17 mg/kg Tl (2 SD), of which 4.4 % exchangeable (1 M NH4NO3) and 8.4 % oxalate-extractable. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 0.76 ± 0.7 ε | 1 | C horizon (from 20 cm) Single analysis; ± 0.7 ε (2 SD); 533 ± 22 mg/kg Tl (2 SD), of which 4.7 % exchangeable (1 M NH4NO3) and 5.9 % oxalate-extractable; lightest soil value. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 4.61 ± 0.7 ε | 1 | exchangeable Tl (1 M NH4NO3 leachate) of the Bw1 horizon (5-10 cm) Single analysis; ± 0.7 ε (2 SD); bulk Tl of the horizon at +8.65, i.e. an exchangeable minus bulk offset of -4.04; the exchangeable pool stays between +3.2 and +4.9 while bulk Tl ranges from +3.6 to +8.7. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 4.18 ± 0.7 ε | 1 | exchangeable Tl (1 M NH4NO3 leachate) of the Bw2 horizon (10-15 cm) Single analysis; ± 0.7 ε (2 SD); bulk Tl of the horizon at +8.06, i.e. an exchangeable minus bulk offset of -3.88; the exchangeable pool stays between +3.2 and +4.9 while bulk Tl ranges from +3.6 to +8.7. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 4.36 ± 0.7 ε | 1 | exchangeable Tl (1 M NH4NO3 leachate) of the Bw3 horizon (15-20 cm) Single analysis; ± 0.7 ε (2 SD); bulk Tl of the horizon at +3.63, i.e. an exchangeable minus bulk offset of +0.73; the exchangeable pool stays between +3.2 and +4.9 while bulk Tl ranges from +3.6 to +8.7. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … |
Deposits of the same type
- Erzmatt soil profiles P1 to P3 (Voegelin et al., 2015) Switzerland
- Erzmatt meadow soil (profile M) Switzerland
- Soils of the Peisey-Nancroix mining and metallurgical site France
- Contaminated grassland soils around the Lengerich cement plant (profiles 1 to 3) Germany
- Lot riverbank soils upstream of the Riou Mort confluence France
- Riou Mort basin soils around the Viviez plant France
- Lot riverbank soils downstream of the Riou Mort confluence France
- Kluky grassland soil (Stagnic Cambisol on granite) Czechia
Cite this page
IsoFind Atlas (2026). Forest soil next to the Erzmatt (profile F), isotope signatures. https://www.isofind.tech/isotopes/en/sites/sol-forestier-en-bordure-de-l-erzmatt-profil-f/ (accessed 2026-10-16).
@misc{isofind2026forestsoilnexttotheerzmattpro,
title = {Forest soil next to the Erzmatt (profile F), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/sol-forestier-en-bordure-de-l-erzmatt-profil-f/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16