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Swiss Journal of Geosciences
Fig. 4 | Swiss Journal of Geosciences

Fig. 4

From: The Triassic–Jurassic boundary in the shallow-water marine carbonates from the western Northern Calcareous Alps (Austria)

Fig. 4

Macroscopic (a), microscopic (b) and SEM (c) images of the laminated bed. The red arrow marks the younging direction. A foraminifer Triasina hantkeni is marked by the white rectangle just left of a fenestra (stromatactis) in (b). SEM image showing a filamentous structure that may be the mineralized remains of the extracellular polymeric substances that once constituted the microbial mat. (c). H bindstone (host rock), I internal micrite, S sparitic cement

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