The Ternoise valley is the most northerly flowing in the syncline to the south of the Variscan front.
Just to the south of La Châtre, some twelve kilometres south of Vic, the Variscan-faulted rocks of the Massif Central begin with Cambrian/Ordovician migmatite.
Variscan orogeny | Variscan Orogeny | Laramide orogeny | Caledonian orogeny | Alpine orogeny | Kibaran orogeny | Eburnean orogeny | Cadomian Orogeny | Acadian orogeny |
It was reactivated as a normal fault in the Carboniferous with a downthrow to the northwest and again reactivated as a reverse fault during Late Carboniferous inversion associated with the Variscan Orogeny.
There are no indications of inversion during the Variscan Orogeny, but the fault was reactivated in a normal sense during the Permian and Triassic and again during the Cenozoic with a sinistral strike-slip sense.