Fig. 3

Stratigraphic scheme of the Middle Muschelkalk sediments in the study area. Section showing the main lithologies as well as a composite gamma-ray log (* combination of typical sections in different boreholes). (1) Correlation of global biostratigraphic scale with chronometric age following CA-TIMS time scale in Menning (2020); (2) Lithostratigraphic units in Germany after Hagdorn and Simon (2020), Simon et al., (2020a, 2020b; (3) Formations in Switzerland after Jordan (2016), members according to subdivisions by different authors: members of the Schinznach Fm.: Pietsch et al. (2016), of the Zeglingen Fm.: Hauber (1971) and Widmer (1991), informal members of the Kaiseraugst Fm. as listed by Jordan (2016) and complemented by the «Unterer Dolomit». For more details see text. A: Aegean; B: Bithynian; «Dolomit-dom. Sch.»: «Dolomit-dominierte Schichten»; HST: highstand system tract; Kais.Fm.: Kaiseraugst Formation; L: Lower; LST: lowstand system tract; M: Middle; «Obere Anhydritsch.»: «Obere Anhydritschichten»; SB: sequence boundary; Sch.: Schinznach Formation; TST: transgressive system tract; U: Upper; «Unt. Anhydritschichten»: «Untere Anhydritschichten»; Zwischendol./anh.: Wutha-Karbonat (Zwischendolomit) and Zwischenanhydrit