Fig. 3From: The Alpstein in three dimensions: fold-and-thrust belt visualization in the Helvetic zone, eastern SwitzerlandStratigraphy of the study area: a Complete stratigraphy as described in Eugster et al. (1982). b Simplified stratigraphy, grouping some of the formations into larger units and corresponding erosion profile. c North–south correlation schematically showing thickness and lateral variation of the stratigraphy. Most notable is the increase in thickness of the Vitznau Marl towards the southBack to article page