Skip to main content
Swiss Journal of Geosciences
Fig. 6 | Swiss Journal of Geosciences

Fig. 6

From: Structural and metamorphic evolution of a subducted passive margin: insights from the Briançonnais nappes of the Western Alps (Ubaye–Maira valleys, France–Italy)

Fig. 6

Colle Greguri outcrop. a Simplified geological map; b View of the contact between metandesite (AND) and “Marbres en Plaquettes” (MeP) calcschist, note the interbedding of thin layers of limestone (white) and andesitic sand (dark) at the overturned base of the “Marbres en Plaquettes”; c Fine lamination between andesite layers and calcite layers, in a distal turbidite, at the base of “Marbres en Plaquettes”. View is orthogonal to the layering; d Panorama on Colle Greguri and Rocca Castello–Provenzale group from Col de Maurin. The main stratigraphic and tectonic contacts are traced to highlight the syncline in the “marbres en plaquettes” calcschist. MeP “marbres en plaquettes” calcschist (Upper Cretaceous—early Paleogene), J Jurassic Marble, TMS Middle–Upper Triassic meta-limestone and meta-dolostone, TW Tabular quartzite (Lower Triassic), QC2 conglomeratic quartzite (Roure unit); AND metavolcanite/metandesite (Upper Permian), φCEI = Ceillac backthrust

Back to article page