Impact d'anciennes activités minières sur la zone critique : exemple des mines de plomb et d'argent de Peisey-Nancroix (19ème-20ème siècle)

2018

International audience; A better understanding of long-term trace metals dispersal and their bioavailability in the critical zone is required to anticipate future impacts of present-day mining activity. The Pb-Ag district of Peisey-Nancroix (northern French Alps) is an excellent target to study the long-term environmental impacts (> 150 years) of former mines and trace metal dispersal in the critical zone, considering that every steps of the mining cycle, from ore extraction to ore processing, were located on a few hectares site that has been unmodified since mine closure in 1866 (no reclamation). A cross-disciplinary study is conducted using several proxies (ore, waste dumps, soil, water, …