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Fig. 2 | Swiss Journal of Geosciences

Fig. 2

From: Formation of phyllosilicates in a fault zone affecting deeply buried arkosic sandstones: their influence on petrophysic properties (Annot sandstones, French external Alps)

Fig. 2

Field photograph and structural data of the Restefond fault outcrop. Only eight samples are localized on the picture, the other four samples are located in the hanging wall between 12 to 17 m from the core zone and their position is not visible on this photograph. The footwall is composed of sandstone-mudstone succession while the hanging wall is composed of massive sandstone layers. The core zone is bounded by two major slip surfaces (white lines on photograph) and is composed by imbricated lenses of deformed sandstone (cf. Figs. 3, 4). 1 Schmidt diagram with the plot of shear planes (lines) and striations (arrows indicate the sense of displacement of the upper block); 2 Schmidt diagram with the plot of quartz-calcite extension veins surfaces (lines) and poles of the cleavage planes (green points). Scale is represented by the man in front of the fault

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