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Swiss Journal of Geosciences
Fig. 6 | Swiss Journal of Geosciences

Fig. 6

From: Anatomy of a km-scale fault zone controlling the Oligo-Miocene bending of the Ligurian Alps (NW Italy): integration of field and 3D high-resolution digital outcrop model data

Fig. 6

Main features of the Horse Head Fault zone exposed in the Verzi abandoned quarry. A Damage zone is constituted by alternation of brecciated dolostone, limestone and thin sheared pelite layers, including multiple polished slip surfaces (white arrow highlights one surface of tens of square meters). B Brecciated domain with dilational jogs filled by euhedral calcite crystals. C The grain size of the crush breccia and cataclasite decreases toward the fault core at the main slip surface (from left to right). D Cataclasite supported by a pinkish very fine-grained matrix. E Fault breccia with large and broken angular clasts containing fractures with radial orientation, pointed at by red arrows. F Heterogranular crush breccia of dolostone in the outer part of the damage zone. G Breccia bodies of highly angular fragments with “jigsaw” texture

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