Erzmatt meadow soil (profile M)
Basel-Landschaft, Buus (Tabular Jura), Switzerland
Soils
- Type
- Soil
Pit in the Erzmatt meadow, a former pasture. 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 Skeletic Cambisol (WRB). Published GPS coordinates (Fig. S1: N 47.505715, E 7.852667).
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 3.62 ± 0.7 ε | 1 | Oi horizon (3-1 cm) Single analysis; ± 0.7 ε (2 SD); 50.7 ± 0.6 mg/kg Tl (2 SD), of which 34.7 % exchangeable (1 M NH4NO3) and 71.2 % oxalate-extractable; hydrated Tl+ 66 % and Tl(III) 8 % (XANES). | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 4.84 ± 0.7 ε | 1 | Oe horizon (1-0 cm) Single analysis; ± 0.7 ε (2 SD); 220 ± 10 mg/kg Tl (2 SD), of which 13.5 % exchangeable (1 M NH4NO3) and 20.0 % oxalate-extractable. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 7.18 ± 0.7 ε | 1 | Ah horizon (0-5 cm) Single analysis; ± 0.7 ε (2 SD); 570 ± 14 mg/kg Tl (2 SD), of which 5.5 % exchangeable (1 M NH4NO3) and 8.5 % oxalate-extractable. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 8.66 ± 0.7 ε | 1 | Bw1 horizon (5-10 cm) Single analysis; ± 0.7 ε (2 SD); 657 ± 22 mg/kg Tl (2 SD), of which 5.5 % exchangeable (1 M NH4NO3) and 7.0 % oxalate-extractable; heaviest value of the profile. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 5.57 ± 0.7 ε | 1 | Bw2 horizon (10-15 cm) Single analysis; ± 0.7 ε (2 SD); 481 ± 21 mg/kg Tl (2 SD), of which 7.3 % exchangeable (1 M NH4NO3) and 10.0 % oxalate-extractable. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 4.23 ± 0.7 ε | 1 | Bw3 horizon (15-20 cm) Single analysis; ± 0.7 ε (2 SD); 670 ± 12 mg/kg Tl (2 SD), of which 5.0 % exchangeable (1 M NH4NO3) and 5.9 % oxalate-extractable. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 3.58 ± 0.7 ε | 1 | Bw4 horizon (20-25 cm) Single analysis; ± 0.7 ε (2 SD); 630 ± 13 mg/kg Tl (2 SD), of which 5.3 % exchangeable (1 M NH4NO3) and 7.8 % oxalate-extractable. | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 2.6 ± 0.7 ε | 1 | C horizon (from 25 cm) Single analysis; ± 0.7 ε (2 SD); 651 ± 23 mg/kg Tl (2 SD), of which 5.2 % exchangeable (1 M NH4NO3) and 7.8 % oxalate-extractable; Tl(I) entirely bound to micaceous clays (XANES). | Vaněk et al. (2020), Thallium stable isotope ratios in naturally Tl-rich soils, Geoderma … | |
| 4.6 ± 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 +8.66, i.e. an exchangeable minus bulk offset of -4.06; 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 … | |
| 4.86 ± 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 +5.57, i.e. an exchangeable minus bulk offset of -0.71; 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 … | |
| 4.67 ± 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 +4.23, i.e. an exchangeable minus bulk offset of +0.44; 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 … | |
| 3.18 ± 0.7 ε | 1 | exchangeable Tl (1 M NH4NO3 leachate) of the Bw4 horizon (20-25 cm) Single analysis; ± 0.7 ε (2 SD); bulk Tl of the horizon at +3.58, i.e. an exchangeable minus bulk offset of -0.40; 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
- Forest soil next to the Erzmatt (profile F) 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). Erzmatt meadow soil (profile M), isotope signatures. https://www.isofind.tech/isotopes/en/sites/sol-de-prairie-de-l-erzmatt-profil-m/ (accessed 2026-10-16).
@misc{isofind2026erzmattmeadowsoilprofilemisot,
title = {Erzmatt meadow soil (profile M), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/sol-de-prairie-de-l-erzmatt-profil-m/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16