Riou Mort basin soils around the Viviez plant
Riou Mort basin and Lot valley, Aveyron and Lot, France
Soils
- Type
- Soil
The Viviez zinc ore processing plant (Vieille Montagne then Umicore) refined up to 100,000 t of zinc per year (1985) by electrolysis and thermal processing; its tailings, very heavy in zinc, polluted the Riou Mort and then the Lot until extraction stopped in 1987. Soils upstream (V0) and downstream (V1) of the plant, zinc from 877 to 2983 mg/kg. Indicative coordinates.
δ66Zn in ‰ (per mil) Values of the same system
Standard : JMC 3-0749L
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.45 ± 0.04 ‰ | 0.42 / 0.48 ‰ | 2 | Mean and standard deviation recalculated from 2 samples, Table 1. Mixture of atmospheric fallout (ash, ore and tailings dust). | Sivry et al. (2008), Zn isotopes as tracers of anthropogenic pollution from Zn-ore smelte… |
Deposits of the same type
- Lot riverbank soils upstream of the Riou Mort confluence France
- Lot riverbank soils downstream of the Riou Mort confluence France
- Wetland downstream of the Ty Gallen mine France
- Klafastaðir Andosol (Hvalfjörður, Iceland) Islande
- Barren ferruginous crust of the Perkoa area Burkina Faso
- Distal soils of the Perkoa area Burkina Faso
- Soils near the Perkoa gossan Burkina Faso
- Pasvik valley and Sør-Varanger (Nikel and Zapolyarny fallout) Norway
Cite this page
IsoFind Atlas (2026). Riou Mort basin soils around the Viviez plant, isotope signatures. https://www.isofind.tech/isotopes/en/sites/sols-du-bassin-du-riou-mort-autour-de-l-usine-de-viviez/ (accessed 2026-10-13).
@misc{isofind2026rioumortbasinsoilsaroundthevi,
title = {Riou Mort basin soils around the Viviez plant, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/sols-du-bassin-du-riou-mort-autour-de-l-usine-de-viviez/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13