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Swiss Journal of Geosciences
Fig. 11 | Swiss Journal of Geosciences

Fig. 11

From: The St. Gallen Fault Zone: a long-lived, multiphase structure in the North Alpine Foreland Basin revealed by 3D seismic data

Fig. 11

Seismic cross-section oriented along strike and located in the hanging wall of the SFZ (see Fig. 4 for section trace). The PC reflections display two areas of rather continuous, synformal reflection bands in the pre-Mesozoic basement, interpreted as PC graben elements, separated by a (seismically more transparent) crystalline horst topped by a very thin band of reflections interpreted as PC sediments (compare with Fig. 12b, d). The pre-Mesozoic fault segments could only be tentatively mapped. The discontinuous seismic reflections in the lower Mesozoic at approximately XL 150 are regarded as the result of poorer seismic imaging and not as indicating the presence of a fault. The blue tick marks indicate the locations of the intersecting sections shown in Figs. 7 and 8a–f

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