Fig. 6

Photomicrographs of thin sections from lithofacies 1–8 under plane-polarized light. a Laminated dolomudstone (LF1) from Pfaffnau, 1546.12 m. White areas on left and right are chertified sediments. b Pelitic dolowackestone–packstone (LF2) from Schafisheim, 1231.47 m. c Massive–nodular (dolo)mudstone (LF3) from Schafisheim, 1285.34 m. White patches are Hauptmuschelkalk dolomites. d Lithoclastic dolowackestone–packstone (LF4) from Weiach, 853.73 m. Image contains a large (> 1 cm) lithoclast on the right and a yellow bone fragment in in left. e Bioclastic (dolo)wackestone–packstone (LF5). All bioclasts have been leached and only mould exist in the dolomitized sediments. f Oolitic (dolo)wackestone–grainstone (LF6) from Siblingen, 204.77 m. Inset of dolomitized ooid demonstrates that details of ooids are unrecognizable due to matrix dolomitization. g Oncolitic (dolo)wackestone–packstone from Benken, 827.55 m. Oncolites can reach multiple cm in length in LFA 7 at the base of the Upper Muschelkalk. h Bioclastic (dolo)packstone–grainstone from Schlattingen, 1147.95 m. All molluscs have been micritized, leached, cemented and fragmented, while crinoids (bottom left) have generally resisted these processes