Marcenac reservoir on the Lot (reference)
Riou Mort basin and Lot valley, Aveyron and Lot, France
Sediments
- Type
- Sediment
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. Reservoir upstream of the Riou Mort confluence, not affected by the pollution; zinc from 82 to 130 mg/kg. Indicative coordinates.
δ66Zn in ‰ (per mil) Values of the same system
Standard : JMC 3-0749L
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.31 ± 0.02 ‰ | 0.29 / 0.33 ‰ | 3 | Mean and standard deviation recalculated from 3 levels, Table 2. Lot geochemical background. | Sivry et al. (2008), Zn isotopes as tracers of anthropogenic pollution from Zn-ore smelte… |
Deposits of the same type
- Riou Mort downstream of the Viviez plant France
- Riou Mort and Riou Viou upstream of the Viviez plant France
- Cajarc reservoir on the Lot France
- Digonnière peatland (Dig1Ter core) France
- Scheldt estuary Netherlands
- Natural Qaamarujuk fjord sediments (pre-mining) Greenland
- Keqikaer Glacier cryoconite China
- Paraíba do Sul and Guandu rivers Brazil
Cite this page
IsoFind Atlas (2026). Marcenac reservoir on the Lot (reference), isotope signatures. https://www.isofind.tech/isotopes/en/sites/retenue-de-marcenac-sur-le-lot-reference/ (accessed 2026-10-13).
@misc{isofind2026marcenacreservoironthelotrefe,
title = {Marcenac reservoir on the Lot (reference), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/retenue-de-marcenac-sur-le-lot-reference/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13