1. The Mount Nansen ore deposit consists of a system of narrow steeply dipping veins in metamorphic rocks of Precambrian to Paleozoic age, andesitic volcanics and granodioritic to granitic intrusives of Mesozoic age, and Cretaceous to early Tertiary dacitic porphyries.

2. Geologically, the west of Corsica is Hercynian, dominated by granites, granulites and porphyries, which produce a landscape of high rocky peaks, and the northeast is Alpine, with lustrous schists and various sedimentary terrains, lower altitudes and less towering reliefs.

3. Geologically, the west of Corsica is Hercynian, dominated by granites, granulites and porphyries, which produce a landscape of high rocky peaks, and the north-east is Alpine, with lustrous schists and various sedimentary terrains, lower altitudes and less towering reliefs.