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Sheath fold in marble.
Sheath folds are defined by foliation that forms a full circle on the plane of exposure. In 3 dimensions they resemble socks. (SrD-32)
Download ImageFolded Archean gneiss (vertical)
Folded Archean gneiss, Grand Teton National Park, Wyoming. (SrD-29)
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Monocline, SE Utah.
Raplee Monocline and San Juan River, near Mexican Hat, SE Utah. (SrD-26)
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Monocline, NE Utah.
Folded Weber Sandstone (Pennsylvanian) forms a monocline near Dinosaur National Monument, Utah-Colorado. (SrD-27)
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Ptygmatic folds in schist (vertical)
ptygmatically folded pegmatite vein in schist (SrD-22)
Download ImageMonocline and San Juan River, SE Utah.
Rafters on San Juan River and Raplee Monocline (SrD-25)
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Horizontally plunging isoclinal fold (vertical)
Horizontal isoclinal fold in sandstone and shale, Arkansas. (SrD-21)
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plunging anticline, Colorado
Aerial view of faulted plunging anticline, Colorado Front Range. SrD-19
Download ImageRecumbent fold in marble.
Note thickening in hinges, a characteristic of ductile flow. (SrD-17)
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Recumbent syncline (vertical)
Recumbent syncline in Paleozoic limestone. Corkscrew Peak, Death Valley National Park, California. (SrD-11)
Download ImagePlunging anticline, SW Montana (Pan)
Plunging anticline with parasitic folds on limbs, SW Montana. (SrD-05)
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