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Hiker in open joint, Utah (vertical)
Hiker walking through open joint in sandstone. Note conchoidal fracture on joint surface. (SrF-54)
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Array of small left-lateral faults in siltstone
near Lillooet, British Columbia, Canada (SrF-40)
Download ImageFracture tips in sandstone.
Fibrous calcite filling tips of extension fractures in sandstone.Fibers are perpendicular to fracture walls, indicating that fractures formed as Mode 1, opening fractures. (SrF-47)
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Fibrous quartz veins in sandstone.
Fibers are perpendicular to fracture walls, indicating that fractures formed as Mode 1, opening fractures (SrF-46)
Download ImageVertical joints in sandstone, SE Utah.
Aerial view of vertical joints in sandstone, Arches National Park, Utah. Note how weathering and erosion concentrated along the joints. (SrF-44)
Download ImageVertical joints in sandstone, SE Utah.
Sandstone is Jurassic Navajo Sandstone, Arches National Park, Utah. (SrF-45)
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Vertical joints in sandstone, SE Utah.
Aerial view of vertical joints in Jurassic Navajo sandstone, Arches National Park, Utah. Note how weathering and erosion concentrated along the joints. (SrF-43)
Download Imageright- and left-lateral faults
Conjugate strike slip faults and associated fractures in siltstone (SrF-41)
Download ImageKlippe. Chief Mountain., N. Montana.
Chief Mountain and the peaks to its left, are exposures of Proterozoic Belt Supergroup above the Lewis Thrust in Glacier National Park, Montana. Erosion has isolated the upper plate at Chief Mountain and the adjacent two peaks to form klippen (SrF-34).
Download ImageRight- and left-lateral faults in siltstone.
Conjugate faults in siltstone. However, these faults must be somewhat oblique in their slip as the thickness of bedding does not everywhere match across the faults. (SrF-39).
Download ImageThrust fault and fold
Thrust fault and folded pyroclastic rock, SE Oregon. Note that displacement dies upward along the fault (SrF-31).
Download ImageRight-lateral faults
Strike-slip (right-lateral)
faults offsetting granitic dike, N. Wisconsin. (SrF-36)
Imbricate thrust faults in limestone
Imbricate thrust faults repeating brown ledges of Triassic Dinwoody Formation (SrF-32)
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Furnace Creek fault zone, California.
Aerial view of the strike-slip Furnace Creek Fault zone, Death Valley is the salt-covered valley in the background. (SrF-35)
Download ImageMinor thrust faults in core of anticline.
Minor thrust faults in core of anticline, SW Wales, UK. (SrF-30)
Download Imagethrust fault and fold
Thrust fault and fault-bend fold in glacial sediments, eastern Washington. (SrF-19)
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