The Paris basin: a stable geological environment
The Paris basin offers long-term geological stability on a very large scale, due in part to its low seismic risk. The argillaceous stratum is very uniform because of regular sedimentary deposits over time which were barely disturbed by tectonic movements. The depth of the layer (500 m) would protect future waste disposal facilities from erosion, climate change and, because clay has little market value, human intrusion.