Fig. 9

Exploring the implications of structural evolution in the Kamchia basin for the development of western Alpine tectonics (compare with Fig. 1). a illustrates a pre-orogenic configuration of the former European continental margin before Alpine orogenesis after Butler (2013). b illustrates a speculative geometry of basin inversion in the Brianconnais and adjacent strongly rifted domains ahead of the main Alpine orogeny (not shown). c illustrates the incorporation of these inverted basin structures into the subduction channel where they acquire their distinctive metamorphic signatures (as described by Michard et al. 2004)