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Fig. 5 | Swiss Journal of Geosciences

Fig. 5

From: Record of a dense succession of drowning phases in the Alpstein mountains, north-eastern Switzerland: part I—the Lower Cretaceous Tierwis Formation (latest Hauterivian to latest Barremian)

Fig. 5

Tierwis section. Lithological log modified after Bodin et al. (2006b) with main fossil-bearing levels, discontinuities, microfacies, and sequence stratigraphic interpretation. Sequence boundaries (SB) are indicated by bold red lines, transgressive surfaces (TS) by dash–dot green lines, and maximum flooding surfaces (MFS) by dashed blue lines. The phosphorus curve is taken from Bonvallet (2015) and Bonvallet et al. (2019). Sample positions and carbon and oxygen isotopes curves are form Bodin et al. (2006b), Bonvallet (2015), Bonvallet et al. (2019) and Godet et al. (2013). Carbon-isotopic segments B1 to A1 reported on the δ13C curve are labelled after the nomenclature of Wissler (2001), and Wissler et al. (2002, 2003). We split the segment B1 in two subsegments B1a and B1b, and temporary named the two uppermost Hauterivian segments as Hy and Hz

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