Fractures

calcite slickenfibres (white) on a fault plane in marly limestones, Slovenian Alps. The shear sense of the hangingwall is towards the top of the picture.
calcite slickenfibres (white) on a fault plane in marly limestones, Slovenian Alps. The shear sense of the hangingwall is towards the top of the picture.
Image: Kamil Ustaszewski
Calcite-filled hybride fractures (subhorizontal) in Cretaceous limestones affected by a spaced fracture cleavage. Istria Peninsula, Croatia.
Calcite-filled hybride fractures (subhorizontal) in Cretaceous limestones affected by a spaced fracture cleavage. Istria Peninsula, Croatia.
Image: Kamil Ustaszewski
Fault between Cretaceous limestones of the Sazani Zone (right) and flysch of the Ionian Zone (near Dukat, S Albania). Note that the disconformity between Ionian flysch and Quaternary cover is displaced by the fault.
Fault between Cretaceous limestones of the Sazani Zone (right) and flysch of the Ionian Zone (near Dukat, S Albania). Note that the disconformity between Ionian flysch and Quaternary cover is displaced by the fault.
Image: Kamil Ustaszewski
The Dobrotino Fault is an Early Oligocene normal fault at the eastern margin of the Pirin Massif in SW Bulgaria. The fault is exposed along the east- (left-) dipping front faces of the hills. In the hanging wall of the fault (left), the syntectonic Mesta (Nestos) Basin developed in the Oligocene (see Georgiev et al., 2010).
The Dobrotino Fault is an Early Oligocene normal fault at the eastern margin of the Pirin Massif in SW Bulgaria. The fault is exposed along the east- (left-) dipping front faces of the hills. In the hanging wall of the fault (left), the syntectonic Mesta (Nestos) Basin developed in the Oligocene (see Georgiev et al., 2010).
Image: Jan Pleuger
Conjugate shear fractures affecting volcanic bombs within Miocene pyroclastic deposits of the Coastal Range, Eastern Taiwan. Coin for scale (bottom center next to the left fracture).
Conjugate shear fractures affecting volcanic bombs within Miocene pyroclastic deposits of the Coastal Range, Eastern Taiwan. Coin for scale (bottom center next to the left fracture).
Image: Kamil Ustaszewski
Low-angle normal faults in turbiditic sandstones, Magozd, Slovenia.
Low-angle normal faults in turbiditic sandstones, Magozd, Slovenia.
Image: Kamil Ustaszewski
Calcite-filled hybrid fracture in Paleocene nummulitic limestones, Sveta Marina, Istria, Croatia.
Calcite-filled hybrid fracture in Paleocene nummulitic limestones, Sveta Marina, Istria, Croatia.
Image: Kamil Ustaszewski
title="Steeply dipping fracture cleavage in Mesozoic limestones (Istria, Croatia)"
title="Steeply dipping fracture cleavage in Mesozoic limestones (Istria, Croatia)"
Image: Kamil Ustaszewski
Fracture cleavage (dipping steeply to the right) in Mesozoic limestones (Istria, Croatia)
Fracture cleavage (dipping steeply to the right) in Mesozoic limestones (Istria, Croatia)
Image: Kamil Ustaszewski
Slickolites (oblique stylolites) on a sub-vertical fault plane in Lower Muschelkalk, indicating dextral relative motion (Bad Kösen, Germany)
Slickolites (oblique stylolites) on a sub-vertical fault plane in Lower Muschelkalk, indicating dextral relative motion (Bad Kösen, Germany)
Image: Payman Navabpour
Sub-vertical stylolite plane with horizontal teeth in Lower Muschelkalk oolite beds, indicating NW-SE contraction (NW Naumburg, Germany)
Sub-vertical stylolite plane with horizontal teeth in Lower Muschelkalk oolite beds, indicating NW-SE contraction (NW Naumburg, Germany)
Image: Payman Navabpour
Slickenfibres and surface steps testify to a subhorizontal displacement direction in Mesozoic metasediments of the Canavese zone which is sinistral in map view (Southern Alps near Ivrea, Piemonte, Italy).
Slickenfibres and surface steps testify to a subhorizontal displacement direction in Mesozoic metasediments of the Canavese zone which is sinistral in map view (Southern Alps near Ivrea, Piemonte, Italy).
Image: Jan Pleuger