According to the detailed structural analysis, aluminosilicate-bearing
veins are formed between the D3 and D4 deformation phases. They cut the
and are folded by the deformation phase D4, linked to the Larecc's
anticline. Additionally, thermometry by oxygen
and aluminosilicates pairs confirms that the formation of those minerals
tooks place at maximum of temperature, between D3 and D4. The formation
of those veins is so contemporaneous with the peak of metamorphism.