Cross-cutting dykes are folded, partly transposed or boudinaged in the gneissose foliation. |
Post-Grenville deformation affecting the Armagh Gneiss Complex is heterogeneous but involves partial to complete recrystallization of the Grenville gneissose foliation. |
In Brittany a gneissose and schistose igneous series lies at the base of the pre-Cambrian. |