Fig. 9From: Record of a dense succession of drowning phases in the Alpstein mountains, northeastern Switzerland: Part II—the Lower Cretaceous Schrattenkalk Formation (late Barremian)A Langtal-Säntis section. Lithological log with discontinuity surfaces (D12 to D17). B Overview of the section looking north eastward. C Focus on the Drusberg-Schrattenkalk transition at Langtal. D Focus on the boundary between units S1 and S2 characterised by thin-bedded bioclastic limestones, which form the base of unit S2Back to article page