Fig. 3From: Lithostratigraphic units of the Helvetic Palaeogene: review, new definition, new classificationTemporal and spatial distribution of the Euthal Formation, Bürgen Formation, Klimsenhorn Formation and Wildstrubel Formation during the Palaeocene–Eocene (modified from Kempf and Pfiffner 2004). Dashed bold lines indicate the northernmost occurrence of the different formations. Note the spatial distribution of the Siderolithic deposits (dotted pattern)Back to article page