Fig. 6From: Swiss and Alpine geologists between two tectonic revolutions. Part 1: from the discovery of nappes to the hypothesis of continental driftDuring the opening of the Atlantic, oceanisation in the Mediterranean Sea, due to crustal distension associated with the rotation of the Corsican-Sardinian block (Argand, 1924b, p. 356–359). Legend: 1 Sima, attentuated; 2 Sima, more attenuated than 1, locally missingBack to article page