Fig. 4

Illustrations of vein infills on meso- and microscopic scale (core diameter is 10 cm). a Sample 415.72, Geissberg Member limestone cut by a calcite vein showing sub-horizontal striation. b Sample 443.78, bedded Effingen Member limestone and calcareous marl cut by calcite veins. Veins are better developed in the limestone bed. c Sample 569.33, bedded Effingen Member sandy calcareous marl cut by a calcite-celestite vein. d Sample 409.42, Geissberg Member limestone cut by a calcite vein containing brown organic matter. e Sample 586.73, Effingen Member. Celestite–calcite–pyrite vein. Celestite crystals are idiomorphic and were overgrown by later calcite. f Sample 708.18, Hauptrogenstein Formation. Calcite vein crosscutting oolitic limestone. Stylolithic joints are present along the edge of the vein and indicate that highest pressures were reached after vein calcite precipitation. d and f are in parallel polarized transmitted light, whereas e is in crossed polarized transmitted light