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Swiss Journal of Geosciences
Fig. 14 | Swiss Journal of Geosciences

Fig. 14

From: Alpine peak pressure and tectono-metamorphic history of the Monte Rosa nappe: evidence from the cirque du Véraz, upper Ayas valley, Italy

Fig. 14

Schematic geological evolution of the Monte Rosa nappe encompassing the range of lithologies and structures exposed at the upper val d’Ayas, Italy: a late Paleozoic intrusion of Monte Rosa granite bodies into Variscan metapelite basement. b Triassic-Jurassic rifting and extension, and deposition of shallow carbonate sediments. c Tertiary Alpine orogenesis and over-thrusting of Zermatt-Saas ophiolite units above the Monte Rosa continental complex. d Late-Alpine backfolding phase. e Late-Alpine tilting and orogen parallel strike-slip movement, resulting in the present day position of the Monte Rosa and Zermatt-Saas nappes

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