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Summary
DescriptionMartinsloch.jpg
English: Martinsloch (“Martin’s hole”) enclosed by greyish limestone which is overlain by dark grey peak-forming conglomerate (so-called Verrucano) at the Tschingelhörner (ridge between Piz Segnas and Piz Grisch, Glarus Alps, eastern Switzerland; viewing direction is to the west). The Verrucano (Permian) is geologically older than the limestone (Upper Jurassic) and has been thrusted onto it. The well visible line dividing the two rock units is known as the Glarus Main Thrust.
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