Part of The Shear Zone Channel. In the Cottian area of the Western Alps, the rocks of the Brianconnais provide a geological time machine back to when the region lay on the continental margin of Europe - on the edge of the Tethys ocean. Join Rob as he explores the stratigraphy of famous sites to build a geological history - one that informs ideas of how the continental crust rifted to form Tethys - and a curious history of earlier rifting too...

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